refactor(store): replace Redis with MongoDB datastore

Swap the Redis datastore for MongoDB via mongo-driver v2. New internal/mongostore mirrors the old redisstore type/constant names so consumers change only the import qualifier; document model collapses the multi-key subscriber/settings and per-event delivery sets into single-doc operations and a TTL-indexed delivery collection. Config now requires MONGODB_URI (Atlas) with MONGODB_DATABASE selecting dev vs prod on one cluster; REDIS_URL removed. Compose files run bot-only against Atlas. Default tests stay Docker-free (poller/bot use fakes, mongostore unit tests are pure-logic); a gated //go:build integration suite covers the real backend via testcontainers.
2026-10-11 03:13:41 +00:00 · 2026-06-26 13:41:16 +07:00
1 parent 90eb8fa819
commit 546e6fcde2
@@ -1,5 +1,6 @@
 TELEGRAM_BOT_TOKEN=
-REDIS_URL=redis://localhost:6379/0
+MONGODB_URI=mongodb+srv://<user>:<pass>@<cluster>/
+MONGODB_DATABASE=openai_status_bot
 POLL_INTERVAL=1m
 HTTP_TIMEOUT=10s
 LOG_LEVEL=info
@@ -1,6 +1,6 @@
 # openai-status-bot

-Telegram bot that watches [OpenAI Status](https://status.openai.com/) every minute and sends updates to subscribed chats. State and subscriptions are stored in Redis.
+Telegram bot that watches [OpenAI Status](https://status.openai.com/) every minute and sends updates to subscribed chats. State and subscriptions are stored in MongoDB.

 ## Features

@@ -8,12 +8,12 @@ Telegram bot that watches [OpenAI Status](https://status.openai.com/) every minu
 - Notifies subscribers about new incident updates
 - Notifies subscribers when component status changes
 - Supports incident-only, component-only, and component-filtered subscriptions
- Uses Redis for subscribers, delivery state, component checkpoints, and seen incident update versions
+- Uses MongoDB for subscribers, delivery state, component checkpoints, and seen incident update versions
 - Supports Telegram supergroup topics via `message_thread_id`
 - Clears an existing Telegram webhook before long polling, for migration from webhook deployments
 - Registers the Telegram command menu on startup
 - Exposes a local health endpoint for container health checks
- Includes Docker Compose for local Redis + bot runtime
+- Includes Docker Compose for the bot runtime (datastore is managed MongoDB Atlas)

 ## Bot Commands

@@ -32,17 +32,24 @@ Telegram bot that watches [OpenAI Status](https://status.openai.com/) every minu

 ## Quick Start

+There is no local datastore. Both Compose files run only the bot and connect to
+a managed MongoDB Atlas cluster, so a reachable `MONGODB_URI` is required to
+start. The development and production setups share one cluster and differ only
+by database name (`MONGODB_DATABASE`).
+
+Development runtime (targets the `openai_status_bot_dev` database):
+
 ```bash
 cp .env.example .env
-# edit .env and set TELEGRAM_BOT_TOKEN
+# edit .env and set TELEGRAM_BOT_TOKEN and MONGODB_URI (Atlas connection string)
 docker compose up --build
 ```

-To deploy only the bot when Redis is hosted elsewhere:
+Production runtime (uses the `MONGODB_DATABASE` from `.env`, default `openai_status_bot`):

 ```bash
 cp .env.example .env
-# edit .env and set TELEGRAM_BOT_TOKEN plus REDIS_URL for the external Redis host
+# edit .env and set TELEGRAM_BOT_TOKEN, MONGODB_URI, and MONGODB_DATABASE
 docker compose -f docker-compose.bot.yml up -d --build
 ```

@@ -58,17 +65,24 @@ go run ./cmd/openai-status-bot
 | Variable | Default | Description |
 |----------|---------|-------------|
 | `TELEGRAM_BOT_TOKEN` | required | Telegram bot token from BotFather |
-| `REDIS_URL` | `redis://localhost:6379/0` | Redis connection URL, e.g. `redis://:password@localhost:6379/0` |
+| `MONGODB_URI` | required | MongoDB connection string, e.g. an Atlas `mongodb+srv://user:pass@cluster/` URI |
+| `MONGODB_DATABASE` | `openai_status_bot` | Database name; use a separate name (e.g. `openai_status_bot_dev`) to split dev and prod on one cluster |
 | `POLL_INTERVAL` | `1m` | Status check interval, valid `5s`-`1h` |
 | `HTTP_TIMEOUT` | `10s` | HTTP request timeout, valid `1s`-`5m` |
 | `LOG_LEVEL` | `info` | `debug`, `info`, `warn`/`warning`, or `error` |

-Percent-encode Redis usernames or passwords that contain URL-reserved characters such as `@`, `:`, `/`, `#`, or `%`.
+Percent-encode MongoDB usernames or passwords that contain URL-reserved characters such as `@`, `:`, `/`, `#`, or `%`.

 The bot always reads OpenAI status from `https://status.openai.com`.

 ## Notes

-The first successful poll seeds Redis and does not send historical incidents. Notifications start from later changes.
+The first successful poll seeds the database and does not send historical incidents. Notifications start from later changes.
+
+Switching from a prior Redis deployment starts from empty state: there is no data migration, so subscribers must re-issue `/start` and component checkpoints reseed on the first poll.

 Incident update dedupe tracks the update content/version, so edited Statuspage updates can notify again. Delivery is checkpointed after successful fan-out; retryable Telegram failures may be retried on a later poll without advancing the global checkpoint.
+
+A 7-day TTL index on the `delivery` collection expires per-event delivery markers automatically; the bot creates required indexes on startup.
+
+Integration tests for the MongoDB store run a real `mongod` via testcontainers and are excluded from the default `go test ./...`. Run them with Docker available: `go test -tags=integration ./internal/mongostore/...`.
@@ -7,14 +7,15 @@ import (
 	"os/signal"
 	"syscall"

-	"github.com/redis/go-redis/v9"
 	"github.com/tiennm99/openai-status-bot/internal/bot"
 	"github.com/tiennm99/openai-status-bot/internal/config"
 	"github.com/tiennm99/openai-status-bot/internal/health"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 	openai "github.com/tiennm99/openai-status-bot/internal/openai"
 	"github.com/tiennm99/openai-status-bot/internal/poller"
-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
 	"github.com/tiennm99/openai-status-bot/internal/telegram"
+	"go.mongodb.org/mongo-driver/v2/mongo"
+	"go.mongodb.org/mongo-driver/v2/mongo/options"
 )

 func main() {
@@ -34,14 +35,26 @@ func main() {

 	go health.Run(ctx, logger)

-	redisClient := redis.NewClient(cfg.RedisOptions)
-	if err := redisClient.Ping(ctx).Err(); err != nil {
-		logger.Error("connect redis", "network", cfg.RedisOptions.Network, "addr", cfg.RedisOptions.Addr, "db", cfg.RedisOptions.DB, "tls", cfg.RedisOptions.TLSConfig != nil, "error", err)
+	mongoClient, err := mongo.Connect(options.Client().ApplyURI(cfg.MongoURI))
+	if err != nil {
+		logger.Error("connect mongodb", "database", cfg.MongoDatabase, "error", err)
+		os.Exit(1)
+	}
+	defer func() {
+		if err := mongoClient.Disconnect(context.Background()); err != nil {
+			logger.Warn("disconnect mongodb", "error", err)
+		}
+	}()
+	if err := mongoClient.Ping(ctx, nil); err != nil {
+		logger.Error("ping mongodb", "database", cfg.MongoDatabase, "error", err)
 		os.Exit(1)
 	}
-	defer redisClient.Close()

-	store := redisstore.New(redisClient)
+	store := mongostore.New(mongoClient, cfg.MongoDatabase)
+	if err := store.EnsureIndexes(ctx); err != nil {
+		logger.Error("ensure mongodb indexes", "database", cfg.MongoDatabase, "error", err)
+		os.Exit(1)
+	}
 	statusClient := openai.NewClient(cfg.HTTPTimeout)
 	telegramClient := telegram.NewClient(cfg.TelegramBotToken, cfg.HTTPTimeout)
 	if err := telegramClient.DeleteWebhook(ctx); err != nil {
@@ -1,3 +1,6 @@
+# Production runtime: bot only, connecting to the shared Atlas cluster via .env.
+# Uses the production database (MONGODB_DATABASE in .env, default
+# openai_status_bot). There is no local datastore.
 services:
  bot:
    build: .
@@ -1,21 +1,11 @@
+# Development runtime: bot only, connecting to the shared Atlas cluster.
+# There is no local datastore; set MONGODB_URI in .env. This file targets the
+# development database (the MONGODB_DATABASE below overrides any .env value).
 services:
-  redis:
-    image: redis:7-alpine
-    ports:
-      - "127.0.0.1:6379:6379"
-    volumes:
-      - redis-data:/data
-    command: ["redis-server", "--appendonly", "yes"]
-
  bot:
    build: .
    env_file:
      - .env
    environment:
-      REDIS_URL: redis://redis:6379/0
-    depends_on:
-      - redis
+      MONGODB_DATABASE: openai_status_bot_dev
    restart: unless-stopped
-
-volumes:
-  redis-data:
@@ -18,9 +18,9 @@ Current decision: monitor next incidents/component updates before changing stora

 ## Findings

- Component checkpoints are stored in Redis as `component_id -> last_status`.
- Redis key: `openai-status:component-statuses`.
- Component names are not stored in that checkpoint hash.
+- Component checkpoints are stored in MongoDB as `component_id -> last_status`.
+- MongoDB collection: `component_statuses` (document ID is component ID, `status` field holds the last seen status).
+- Component names are not stored in that checkpoint document.
 - Component names come from live OpenAI `summary.json` during each poll.
 - The bot compares component status by `component.ID`, then formats the alert with `component.Name`.
 - Incident `page_id` is not used to detect components.
@@ -35,21 +35,21 @@ If component ID changed:

 - Bot treats the component as new.
 - Previous status becomes `unknown`.
- Old Redis component ID remains unused.
+- Old MongoDB component ID remains unused.
 - Component-filtered subscriptions using old ID may stop matching.
 - Unfiltered component subscriptions still receive updates.

 Other possible causes:

- Redis checkpoint was cleared or partially lost.
- `openai-status:initialized` exists while `openai-status:component-statuses` is missing entries.
+- MongoDB checkpoint was cleared or partially lost.
+- `meta` collection has `initialized` document while `component_statuses` collection is missing entries.
 - OpenAI added a new component.

 ## Current State

 - No code change now.
 - Monitor upcoming incidents and component updates.
- Compare current OpenAI component IDs with stored Redis component IDs.
+- Compare current OpenAI component IDs with stored MongoDB component IDs (in `component_statuses` collection).
 - Decide later whether ID-only storage is enough.

 ## Future Options
@@ -62,5 +62,5 @@ Other possible causes:
 ## Unresolved Questions

 - Did OpenAI actually change the component ID?
- Are old component IDs present in Redis but absent from current `summary.json`?
+- Are old component IDs present in MongoDB but absent from current `summary.json`?
 - Should component subscriptions survive ID changes by matching component name?
@@ -3,7 +3,7 @@
 ## Prerequisites

 - Go 1.24+
- Redis 7+
+- MongoDB Atlas cluster (managed, no local MongoDB service required)
 - Telegram bot token from BotFather

 ## Local Docker Run
@@ -11,40 +11,38 @@
 ```bash
 cp .env.example .env
 # set TELEGRAM_BOT_TOKEN in .env
-# REDIS_URL is overridden to redis://redis:6379/0 by docker compose
+# set MONGODB_URI to your MongoDB Atlas connection string
+# docker compose sets MONGODB_DATABASE=openai_status_bot_dev for local development
 docker compose up --build
 ```

-The bundled Redis service is for local development and binds to `127.0.0.1:6379` on the host.
+The Docker Compose service connects to MongoDB Atlas; there is no bundled local MongoDB. Ensure `MONGODB_URI` is set in `.env`.

 ## Bot-Only Docker Run

-Use this when Redis is hosted outside Docker Compose:
+Use this for production deployment:

 ```bash
 cp .env.example .env
 # set TELEGRAM_BOT_TOKEN in .env
-# set REDIS_URL to the external Redis URL, not localhost
+# set MONGODB_URI to your MongoDB Atlas connection string
+# MONGODB_DATABASE defaults to openai_status_bot (production)
 docker compose -f docker-compose.bot.yml up -d --build
 ```

 ## Local Go Run

-Start Redis:
-
-```bash
-docker run --rm -p 127.0.0.1:6379:6379 redis:7-alpine
-```
-
-Run bot:
-
 ```bash
 cp .env.example .env
+# set TELEGRAM_BOT_TOKEN in .env
+# set MONGODB_URI to your MongoDB Atlas connection string
 # export TELEGRAM_BOT_TOKEN or source .env with your shell workflow
-# REDIS_URL defaults to redis://localhost:6379/0
+# MONGODB_DATABASE defaults to openai_status_bot
 go run ./cmd/openai-status-bot
 ```

+MongoDB Atlas connection is required; there is no local MongoDB fallback.
+
 ## Verification

 ```bash
@@ -7,39 +7,36 @@
 - Telegram long polling loop for user commands.
 - OpenAI status polling loop, default every minute.

-Redis stores subscribers, subscription settings, polling checkpoints, delivery retry state, and the Telegram update offset.
+MongoDB stores subscribers, subscription settings, polling checkpoints, delivery retry state, and the Telegram update offset.

 ## Data Flow

 1. User sends `/start` in Telegram.
-2. Bot stores chat ID, optional topic thread ID, and default subscription settings in Redis.
+2. Bot stores chat ID, optional topic thread ID, and default subscription settings in MongoDB.
 3. Users can adjust settings with `/subscribe` and inspect them with `/info`.
 4. Poller fetches OpenAI status JSON:
   - `GET https://status.openai.com/api/v2/summary.json`
   - `GET https://status.openai.com/api/v2/incidents.json`
-5. Poller compares fetched state with Redis checkpoints and builds notification events without mutating checkpoints.
+5. Poller compares fetched state with MongoDB checkpoints and builds notification events without mutating checkpoints.
 6. Events are sent to eligible subscribers, respecting incident/component preferences and component ID filters.
 7. Component and incident checkpoints are written only after delivery succeeds or terminal subscriber failures are removed.

-## Redis Keys
+## MongoDB Collections

-| Key | Type | Purpose |
-|-----|------|---------|
-| `openai-status:subscribers` | set | Telegram chat or topic subscribers |
-| `openai-status:subscriber-settings` | hash | Subscription types and component ID filters by subscriber key |
-| `openai-status:component-statuses` | hash | Last seen component status by component ID |
-| `openai-status:pending-component-events` | hash | Component changes saved before fan-out so retryable delivery failures can be resumed |
-| `openai-status:incident-updates` | set | Legacy seen incident update IDs, retained as write-through metadata; version hash is authoritative |
-| `openai-status:incident-update-versions` | hash | Seen incident update version by update ID |
-| `openai-status:event-delivery:<hash>` | set | Temporary per-event subscriber delivery state for retry isolation |
-| `openai-status:telegram-offset` | string | Last processed Telegram update offset |
-| `openai-status:initialized` | string | Baseline seed marker |
+| Collection | Document ID | Fields | Purpose |
+|-----------|------------|--------|---------|
+| `subscribers` | `chatID` or `chatID:threadID` | chatID, threadID, types, components | Telegram chat or topic subscribers with subscription settings |
+| `component_statuses` | component ID | status | Last seen component status by component ID |
+| `pending_component_events` | component ID | — | Component changes saved before fan-out so retryable delivery failures can be resumed |
+| `incident_update_versions` | update ID | version | Seen incident update version by update ID |
+| `delivery` | `eventKey\|subscriber` | eventKey, subscriber, expiresAt (TTL 7 days) | Temporary per-event subscriber delivery state for retry isolation |
+| `meta` | `initialized` or `telegramOffset` | value | Baseline seed marker and last processed Telegram update offset |

-Subscriber set members are `chatID` or `chatID:threadID`. Missing settings default to incident and component notifications for backward compatibility with older Redis state.
+Subscriber document IDs are `chatID` or `chatID:threadID`. Each subscriber document includes subscription types and component ID filters as fields within the document.

 ## Runtime

-The service uses Telegram `getUpdates`, so it does not need a public webhook URL. On startup it starts a local health endpoint at `127.0.0.1:8080/healthz`, calls `deleteWebhook` before long polling, registers the Telegram command menu, and then starts polling. Redis is configured with `REDIS_URL`. The OpenAI status source is fixed to `https://status.openai.com`. Docker Compose starts Redis and the bot for local development; the bundled Redis port is bound to `127.0.0.1` on the host.
+The service uses Telegram `getUpdates`, so it does not need a public webhook URL. On startup it starts a local health endpoint at `127.0.0.1:8080/healthz`, calls `deleteWebhook` before long polling, registers the Telegram command menu, and then starts polling. MongoDB is configured with `MONGODB_URI` and `MONGODB_DATABASE` (default `openai_status_bot`). The OpenAI status source is fixed to `https://status.openai.com`. Docker Compose starts the bot connecting to a managed MongoDB Atlas cluster; there is no bundled local MongoDB service.

 ## Failure Behavior

@@ -49,5 +46,5 @@ The service uses Telegram `getUpdates`, so it does not need a public webhook URL
 - Successful per-subscriber deliveries are tracked temporarily, so retrying one failed subscriber does not resend to already-delivered subscribers.
 - Pending component events are stored before delivery and removed only after successful delivery or terminal subscriber cleanup.
 - Telegram 403 and selected terminal 400 errors remove the unreachable subscriber, then delivery continues.
- Malformed subscriber keys are removed from Redis and surfaced as an error for the current poll instead of being skipped silently.
- Redis connection failure at startup exits the process.
+- Malformed subscriber document IDs are removed from MongoDB and surfaced as an error for the current poll instead of being skipped silently.
+- MongoDB connection failure at startup exits the process.
@@ -1,14 +1,68 @@
 module github.com/tiennm99/openai-status-bot

-go 1.24
+go 1.25.0

 require (
-	github.com/alicebob/miniredis/v2 v2.38.0
-	github.com/redis/go-redis/v9 v9.17.0
+	github.com/testcontainers/testcontainers-go/modules/mongodb v0.43.0
+	go.mongodb.org/mongo-driver/v2 v2.7.0
 )

 require (
+	dario.cat/mergo v1.0.2 // indirect
+	github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c // indirect
+	github.com/Microsoft/go-winio v0.6.2 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
-	github.com/yuin/gopher-lua v1.1.1 // indirect
+	github.com/containerd/errdefs v1.0.0 // indirect
+	github.com/containerd/errdefs/pkg v0.3.0 // indirect
+	github.com/containerd/log v0.1.0 // indirect
+	github.com/containerd/platforms v0.2.1 // indirect
+	github.com/cpuguy83/dockercfg v0.3.2 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/distribution/reference v0.6.0 // indirect
+	github.com/docker/go-connections v0.6.0 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
+	github.com/ebitengine/purego v0.10.0 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-ole/go-ole v1.2.6 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/klauspost/compress v1.18.5 // indirect
+	github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
+	github.com/magiconair/properties v1.8.10 // indirect
+	github.com/moby/docker-image-spec v1.3.1 // indirect
+	github.com/moby/go-archive v0.2.0 // indirect
+	github.com/moby/moby/api v1.54.2 // indirect
+	github.com/moby/moby/client v0.4.0 // indirect
+	github.com/moby/patternmatcher v0.6.1 // indirect
+	github.com/moby/sys/sequential v0.6.0 // indirect
+	github.com/moby/sys/user v0.4.0 // indirect
+	github.com/moby/sys/userns v0.1.0 // indirect
+	github.com/moby/term v0.5.2 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 // indirect
+	github.com/shirou/gopsutil/v4 v4.26.5 // indirect
+	github.com/sirupsen/logrus v1.9.4 // indirect
+	github.com/stretchr/testify v1.11.1 // indirect
+	github.com/testcontainers/testcontainers-go v0.43.0 // indirect
+	github.com/tklauser/go-sysconf v0.3.16 // indirect
+	github.com/tklauser/numcpus v0.11.0 // indirect
+	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
+	github.com/xdg-go/scram v1.2.0 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
+	github.com/yusufpapurcu/wmi v1.2.4 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.60.0 // indirect
+	go.opentelemetry.io/otel v1.41.0 // indirect
+	go.opentelemetry.io/otel/metric v1.41.0 // indirect
+	go.opentelemetry.io/otel/trace v1.41.0 // indirect
+	golang.org/x/crypto v0.51.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
+	golang.org/x/sys v0.45.0 // indirect
+	golang.org/x/text v0.37.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
@@ -1,14 +1,175 @@
-github.com/alicebob/miniredis/v2 v2.38.0 h1:nZAzCR+Lj+Vxk4ZXzm2NuKq2O33RXj1XxJ2e2uP9jiw=
-github.com/alicebob/miniredis/v2 v2.38.0/go.mod h1:TcL7YfarKPGDAthEtl5NBeHZfeUQj6OXMm/+iu5cLMM=
-github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
-github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
-github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
-github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
+dario.cat/mergo v1.0.2 h1:85+piFYR1tMbRrLcDwR18y4UKJ3aH1Tbzi24VRW1TK8=
+dario.cat/mergo v1.0.2/go.mod h1:E/hbnu0NxMFBjpMIE34DRGLWqDy0g5FuKDhCb31ngxA=
+github.com/AdaLogics/go-fuzz-headers v0.0.0-20240806141605-e8a1dd7889d6 h1:He8afgbRMd7mFxO99hRNu+6tazq8nFF9lIwo9JFroBk=
+github.com/AdaLogics/go-fuzz-headers v0.0.0-20240806141605-e8a1dd7889d6/go.mod h1:8o94RPi1/7XTJvwPpRSzSUedZrtlirdB3r9Z20bi2f8=
+github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c h1:udKWzYgxTojEKWjV8V+WSxDXJ4NFATAsZjh8iIbsQIg=
+github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
+github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
+github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=
+github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=
+github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
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+golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
+golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201204225414-ed752295db88/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.45.0 h1:dO4czNzziLiiXplLQgBCEpCvXQ3dnkn0SdaZSYdQ+FY=
+golang.org/x/sys v0.45.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.43.0 h1:S4RLU2sB31O/NCl+zFN9Aru9A/Cq2aqKpTZJ6B+DwT4=
+golang.org/x/term v0.43.0/go.mod h1:lrhlHNdQJHO+1qVYiHfFKVuVioJIheAc3fBSMFYEIsk=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
+golang.org/x/text v0.37.0 h1:Cqjiwd9eSg8e0QAkyCaQTNHFIIzWtidPahFWR83rTrc=
+golang.org/x/text v0.37.0/go.mod h1:a5sjxXGs9hsn/AJVwuElvCAo9v8QYLzvavO5z2PiM38=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gotest.tools/v3 v3.5.2 h1:7koQfIKdy+I8UTetycgUqXWSDwpgv193Ka+qRsmBY8Q=
+gotest.tools/v3 v3.5.2/go.mod h1:LtdLGcnqToBH83WByAAi/wiwSFCArdFIUV/xxN4pcjA=
+pgregory.net/rapid v1.2.0 h1:keKAYRcjm+e1F0oAuU5F5+YPAWcyxNNRK2wud503Gnk=
+pgregory.net/rapid v1.2.0/go.mod h1:PY5XlDGj0+V1FCq0o192FdRhpKHGTRIWBgqjDBTrq04=
@@ -8,7 +8,7 @@ import (
 	"time"

 	openai "github.com/tiennm99/openai-status-bot/internal/openai"
-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 	"github.com/tiennm99/openai-status-bot/internal/telegram"
 )

@@ -23,13 +23,13 @@ type StatusClient interface {
 }

 type Store interface {
-	AddSubscriber(ctx context.Context, sub redisstore.Subscriber) error
-	GetSubscriber(ctx context.Context, sub redisstore.Subscriber) (redisstore.Subscriber, bool, error)
-	RemoveSubscriber(ctx context.Context, sub redisstore.Subscriber) error
+	AddSubscriber(ctx context.Context, sub mongostore.Subscriber) error
+	GetSubscriber(ctx context.Context, sub mongostore.Subscriber) (mongostore.Subscriber, bool, error)
+	RemoveSubscriber(ctx context.Context, sub mongostore.Subscriber) error
 	SaveTelegramOffset(ctx context.Context, offset int64) error
 	TelegramOffset(ctx context.Context) (int64, error)
-	UpdateSubscriberSettings(ctx context.Context, sub redisstore.Subscriber, types, components []string) (bool, error)
-	UpdateSubscriberTypes(ctx context.Context, sub redisstore.Subscriber, types []string) (bool, error)
+	UpdateSubscriberSettings(ctx context.Context, sub mongostore.Subscriber, types, components []string) (bool, error)
+	UpdateSubscriberTypes(ctx context.Context, sub mongostore.Subscriber, types []string) (bool, error)
 }

 type Bot struct {
@@ -125,7 +125,7 @@ func (b *Bot) handleMessage(ctx context.Context, message telegram.Message) {
 }

 func (b *Bot) subscribe(ctx context.Context, message telegram.Message) {
-	sub := redisstore.NewSubscriber(message.Chat.ID, message.MessageThreadID)
+	sub := mongostore.NewSubscriber(message.Chat.ID, message.MessageThreadID)
 	if err := b.store.AddSubscriber(ctx, sub); err != nil {
 		b.logger.Error("subscribe", "error", err)
 		b.reply(ctx, message, "Could not subscribe right now.")
@@ -135,7 +135,7 @@ func (b *Bot) subscribe(ctx context.Context, message telegram.Message) {
 }

 func (b *Bot) unsubscribe(ctx context.Context, message telegram.Message) {
-	sub := redisstore.NewSubscriber(message.Chat.ID, message.MessageThreadID)
+	sub := mongostore.NewSubscriber(message.Chat.ID, message.MessageThreadID)
 	if err := b.store.RemoveSubscriber(ctx, sub); err != nil {
 		b.logger.Error("unsubscribe", "error", err)
 		b.reply(ctx, message, "Could not unsubscribe right now.")
@@ -9,7 +9,7 @@ import (
 	"time"

 	openai "github.com/tiennm99/openai-status-bot/internal/openai"
-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 	"github.com/tiennm99/openai-status-bot/internal/telegram"
 )

@@ -44,23 +44,23 @@ func (f fakeBotStatusClient) FetchIncidents(context.Context) (openai.IncidentsRe
 }

 type fakeBotStore struct {
-	sub        redisstore.Subscriber
+	sub        mongostore.Subscriber
 	subscribed bool
 	types      []string
 	components []string
 	offsetErr  error
 }

-func (f *fakeBotStore) AddSubscriber(_ context.Context, sub redisstore.Subscriber) error {
+func (f *fakeBotStore) AddSubscriber(_ context.Context, sub mongostore.Subscriber) error {
 	f.sub = sub
 	f.subscribed = true
-	f.types = redisstore.DefaultSubscriptionTypes()
+	f.types = mongostore.DefaultSubscriptionTypes()
 	return nil
 }

-func (f *fakeBotStore) GetSubscriber(context.Context, redisstore.Subscriber) (redisstore.Subscriber, bool, error) {
+func (f *fakeBotStore) GetSubscriber(context.Context, mongostore.Subscriber) (mongostore.Subscriber, bool, error) {
 	if !f.subscribed {
-		return redisstore.Subscriber{}, false, nil
+		return mongostore.Subscriber{}, false, nil
 	}
 	sub := f.sub
 	sub.Types = append([]string{}, f.types...)
@@ -68,7 +68,7 @@ func (f *fakeBotStore) GetSubscriber(context.Context, redisstore.Subscriber) (re
 	return sub, true, nil
 }

-func (f *fakeBotStore) RemoveSubscriber(context.Context, redisstore.Subscriber) error {
+func (f *fakeBotStore) RemoveSubscriber(context.Context, mongostore.Subscriber) error {
 	f.subscribed = false
 	return nil
 }
@@ -76,7 +76,7 @@ func (f *fakeBotStore) RemoveSubscriber(context.Context, redisstore.Subscriber)
 func (f *fakeBotStore) SaveTelegramOffset(context.Context, int64) error { return nil }
 func (f *fakeBotStore) TelegramOffset(context.Context) (int64, error)   { return 0, f.offsetErr }

-func (f *fakeBotStore) UpdateSubscriberTypes(_ context.Context, _ redisstore.Subscriber, types []string) (bool, error) {
+func (f *fakeBotStore) UpdateSubscriberTypes(_ context.Context, _ mongostore.Subscriber, types []string) (bool, error) {
 	if !f.subscribed {
 		return false, nil
 	}
@@ -84,7 +84,7 @@ func (f *fakeBotStore) UpdateSubscriberTypes(_ context.Context, _ redisstore.Sub
 	return true, nil
 }

-func (f *fakeBotStore) UpdateSubscriberSettings(_ context.Context, _ redisstore.Subscriber, types, components []string) (bool, error) {
+func (f *fakeBotStore) UpdateSubscriberSettings(_ context.Context, _ mongostore.Subscriber, types, components []string) (bool, error) {
 	if !f.subscribed {
 		return false, nil
 	}
@@ -96,15 +96,15 @@ func (f *fakeBotStore) UpdateSubscriberSettings(_ context.Context, _ redisstore.
 func TestSubscribeComponentStoresComponentID(t *testing.T) {
 	bot, store, tg := newTestBot([]openai.Component{{ID: "c-api", Name: "API", Status: "operational"}})
 	store.subscribed = true
-	store.sub = redisstore.NewSubscriber(123, nil)
-	store.types = []string{redisstore.SubscriptionTypeIncident}
+	store.sub = mongostore.NewSubscriber(123, nil)
+	store.types = []string{mongostore.SubscriptionTypeIncident}

 	bot.handleMessage(context.Background(), messageText("/subscribe component api"))

 	if len(store.components) != 1 || store.components[0] != "c-api" {
 		t.Fatalf("components = %v, want [c-api]", store.components)
 	}
-	if !containsComponent(store.types, redisstore.SubscriptionTypeComponent) {
+	if !containsComponent(store.types, mongostore.SubscriptionTypeComponent) {
 		t.Fatalf("types = %v, want component enabled", store.types)
 	}
 	if len(tg.replies) != 1 || !strings.Contains(tg.replies[0], "Subscribed to component") {
@@ -115,8 +115,8 @@ func TestSubscribeComponentStoresComponentID(t *testing.T) {
 func TestSubscribeComponentAllEnablesComponentType(t *testing.T) {
 	bot, store, _ := newTestBot(nil)
 	store.subscribed = true
-	store.sub = redisstore.NewSubscriber(123, nil)
-	store.types = []string{redisstore.SubscriptionTypeIncident}
+	store.sub = mongostore.NewSubscriber(123, nil)
+	store.types = []string{mongostore.SubscriptionTypeIncident}
 	store.components = []string{"c-api"}

 	bot.handleMessage(context.Background(), messageText("/subscribe component all"))
@@ -124,7 +124,7 @@ func TestSubscribeComponentAllEnablesComponentType(t *testing.T) {
 	if len(store.components) != 0 {
 		t.Fatalf("components = %v, want cleared", store.components)
 	}
-	if !containsComponent(store.types, redisstore.SubscriptionTypeComponent) {
+	if !containsComponent(store.types, mongostore.SubscriptionTypeComponent) {
 		t.Fatalf("types = %v, want component enabled", store.types)
 	}
 }
@@ -6,12 +6,12 @@ import (
 	"strings"

 	"github.com/tiennm99/openai-status-bot/internal/poller"
-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 	"github.com/tiennm99/openai-status-bot/internal/telegram"
 )

 func (b *Bot) replySubscribe(ctx context.Context, message telegram.Message, fields []string) {
-	sub := redisstore.NewSubscriber(message.Chat.ID, message.MessageThreadID)
+	sub := mongostore.NewSubscriber(message.Chat.ID, message.MessageThreadID)
 	current, subscribed, err := b.store.GetSubscriber(ctx, sub)
 	if err != nil {
 		b.logger.Error("get subscription", "error", err)
@@ -25,19 +25,19 @@ func (b *Bot) replySubscribe(ctx context.Context, message telegram.Message, fiel

 	args := fields[1:]
 	arg := strings.ToLower(args[0])
-	if arg == redisstore.SubscriptionTypeComponent && len(args) > 1 {
+	if arg == mongostore.SubscriptionTypeComponent && len(args) > 1 {
 		b.updateComponentFilter(ctx, message, sub, strings.Join(args[1:], " "), subscribed)
 		return
 	}

 	var types []string
 	switch arg {
-	case redisstore.SubscriptionTypeIncident:
-		types = []string{redisstore.SubscriptionTypeIncident}
-	case redisstore.SubscriptionTypeComponent:
-		types = []string{redisstore.SubscriptionTypeComponent}
+	case mongostore.SubscriptionTypeIncident:
+		types = []string{mongostore.SubscriptionTypeIncident}
+	case mongostore.SubscriptionTypeComponent:
+		types = []string{mongostore.SubscriptionTypeComponent}
 	case "all":
-		types = redisstore.DefaultSubscriptionTypes()
+		types = mongostore.DefaultSubscriptionTypes()
 	default:
 		b.reply(ctx, message, formatSubscribeUsage(currentOrTarget(current, sub, subscribed), subscribed))
 		return
@@ -56,7 +56,7 @@ func (b *Bot) replySubscribe(ctx context.Context, message telegram.Message, fiel
 	b.reply(ctx, message, fmt.Sprintf("Subscription updated: <code>%s</code>", escape(strings.Join(types, ", "))))
 }

-func (b *Bot) updateComponentFilter(ctx context.Context, message telegram.Message, sub redisstore.Subscriber, componentArg string, subscribed bool) {
+func (b *Bot) updateComponentFilter(ctx context.Context, message telegram.Message, sub mongostore.Subscriber, componentArg string, subscribed bool) {
 	if !subscribed {
 		b.reply(ctx, message, "Not subscribed yet. Use /start first.")
 		return
@@ -73,7 +73,7 @@ func (b *Bot) updateComponentFilter(ctx context.Context, message telegram.Messag
 			b.reply(ctx, message, "Not subscribed yet. Use /start first.")
 			return
 		}
-		updated, err := b.store.UpdateSubscriberSettings(ctx, sub, withSubscriptionType(current.Types, redisstore.SubscriptionTypeComponent), nil)
+		updated, err := b.store.UpdateSubscriberSettings(ctx, sub, withSubscriptionType(current.Types, mongostore.SubscriptionTypeComponent), nil)
 		if err != nil {
 			b.logger.Error("clear component filter", "error", err)
 			b.reply(ctx, message, "Could not update component filter right now.")
@@ -118,7 +118,7 @@ func (b *Bot) updateComponentFilter(ctx context.Context, message telegram.Messag
 	if !containsComponent(components, component.ID) {
 		components = append(components, component.ID)
 	}
-	types := withSubscriptionType(current.Types, redisstore.SubscriptionTypeComponent)
+	types := withSubscriptionType(current.Types, mongostore.SubscriptionTypeComponent)
 	updated, err := b.store.UpdateSubscriberSettings(ctx, sub, types, components)
 	if err != nil {
 		b.logger.Error("update component filter", "error", err)
@@ -161,7 +161,7 @@ func (b *Bot) replyUptime(ctx context.Context, message telegram.Message) {
 }

 func (b *Bot) replyInfo(ctx context.Context, message telegram.Message) {
-	sub := redisstore.NewSubscriber(message.Chat.ID, message.MessageThreadID)
+	sub := mongostore.NewSubscriber(message.Chat.ID, message.MessageThreadID)
 	current, subscribed, err := b.store.GetSubscriber(ctx, sub)
 	if err != nil {
 		b.logger.Error("get subscription info", "error", err)
@@ -6,7 +6,7 @@ import (
 	"strings"

 	"github.com/tiennm99/openai-status-bot/internal/poller"
-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 	"github.com/tiennm99/openai-status-bot/internal/telegram"
 )

@@ -51,7 +51,7 @@ func (b *Bot) reply(ctx context.Context, message telegram.Message, text string)
 	}
 }

-func currentOrTarget(current, target redisstore.Subscriber, subscribed bool) redisstore.Subscriber {
+func currentOrTarget(current, target mongostore.Subscriber, subscribed bool) mongostore.Subscriber {
 	if subscribed {
 		return current
 	}
@@ -5,10 +5,10 @@ import (
 	"strconv"
 	"strings"

-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 )

-func formatInfo(sub redisstore.Subscriber, subscribed bool) string {
+func formatInfo(sub mongostore.Subscriber, subscribed bool) string {
 	chatID := strconv.FormatInt(sub.ChatID, 10)
 	if sub.ThreadID != nil {
 		chatID = fmt.Sprintf("%s:%d", chatID, *sub.ThreadID)
@@ -28,7 +28,7 @@ func formatInfo(sub redisstore.Subscriber, subscribed bool) string {
 	)
 }

-func formatSubscribeUsage(sub redisstore.Subscriber, subscribed bool) string {
+func formatSubscribeUsage(sub mongostore.Subscriber, subscribed bool) string {
 	current := "none (use /start first)"
 	components := "all"
 	if subscribed {
@@ -6,25 +6,23 @@ import (
 	"os"
 	"strings"
 	"time"
-
-	"github.com/redis/go-redis/v9"
 )

 type Config struct {
 	TelegramBotToken string
-	RedisOptions     *redis.Options
+	MongoURI         string
+	MongoDatabase    string
 	PollInterval     time.Duration
 	HTTPTimeout      time.Duration
 	LogLevel         slog.Level
 }

 const (
-	minPollInterval = 5 * time.Second
-	maxPollInterval = time.Hour
-	minHTTPTimeout  = time.Second
-	maxHTTPTimeout  = 5 * time.Minute
-	minRedisDB      = 0
-	maxRedisDB      = 15
+	minPollInterval      = 5 * time.Second
+	maxPollInterval      = time.Hour
+	minHTTPTimeout       = time.Second
+	maxHTTPTimeout       = 5 * time.Minute
+	defaultMongoDatabase = "openai_status_bot"
 )

 func LoadFromEnv() (Config, error) {
@@ -34,12 +32,13 @@ func LoadFromEnv() (Config, error) {
 	if cfg.TelegramBotToken == "" {
 		return Config{}, fmt.Errorf("TELEGRAM_BOT_TOKEN is required")
 	}
-	var err error
-	cfg.RedisOptions, err = parseRedisURL("REDIS_URL", getEnv("REDIS_URL", "redis://localhost:6379/0"))
-	if err != nil {
-		return Config{}, err
+	cfg.MongoURI = strings.TrimSpace(os.Getenv("MONGODB_URI"))
+	if cfg.MongoURI == "" {
+		return Config{}, fmt.Errorf("MONGODB_URI is required")
 	}
+	cfg.MongoDatabase = getEnv("MONGODB_DATABASE", defaultMongoDatabase)

+	var err error
 	cfg.PollInterval, err = parseDurationEnv("POLL_INTERVAL", time.Minute, minPollInterval, maxPollInterval)
 	if err != nil {
 		return Config{}, err
@@ -78,17 +77,6 @@ func parseDurationEnv(key string, fallback, minValue, maxValue time.Duration) (t
 	return parsed, nil
 }

-func parseRedisURL(key, value string) (*redis.Options, error) {
-	options, err := redis.ParseURL(value)
-	if err != nil {
-		return nil, fmt.Errorf("%s must be a valid Redis URL", key)
-	}
-	if options.DB < minRedisDB || options.DB > maxRedisDB {
-		return nil, fmt.Errorf("%s database must be between %d and %d", key, minRedisDB, maxRedisDB)
-	}
-	return options, nil
-}
-
 func parseLogLevel(value string) (slog.Level, error) {
 	switch strings.ToLower(strings.TrimSpace(value)) {
 	case "debug":
@@ -10,6 +10,7 @@ import (
 func TestLoadFromEnvDefaultsAndTrimming(t *testing.T) {
 	setMinimalEnv(t)
 	t.Setenv("TELEGRAM_BOT_TOKEN", " token ")
+	t.Setenv("MONGODB_URI", " mongodb+srv://user:pass@cluster.example.net/ ")

 	cfg, err := LoadFromEnv()
 	if err != nil {
@@ -18,39 +19,37 @@ func TestLoadFromEnvDefaultsAndTrimming(t *testing.T) {
 	if cfg.TelegramBotToken != "token" {
 		t.Fatalf("TelegramBotToken = %q", cfg.TelegramBotToken)
 	}
-	if cfg.RedisOptions == nil || cfg.RedisOptions.Addr != "localhost:6379" || cfg.RedisOptions.DB != 0 {
-		t.Fatalf("unexpected Redis options: %+v", cfg.RedisOptions)
+	if cfg.MongoURI != "mongodb+srv://user:pass@cluster.example.net/" {
+		t.Fatalf("MongoURI = %q", cfg.MongoURI)
+	}
+	if cfg.MongoDatabase != defaultMongoDatabase {
+		t.Fatalf("MongoDatabase = %q, want %q", cfg.MongoDatabase, defaultMongoDatabase)
 	}
 	if cfg.PollInterval != time.Minute || cfg.HTTPTimeout != 10*time.Second {
 		t.Fatalf("unexpected defaults: %+v", cfg)
 	}
 }

-func TestLoadFromEnvIgnoresLegacyRedisVariables(t *testing.T) {
+func TestLoadFromEnvAcceptsCustomMongoDatabase(t *testing.T) {
 	setMinimalEnv(t)
-	t.Setenv("REDIS_ADDR", "legacy-host:6380")
-	t.Setenv("REDIS_PASSWORD", "legacy-password")
-	t.Setenv("REDIS_DB", "5")
+	t.Setenv("MONGODB_DATABASE", " openai_status_bot_dev ")

 	cfg, err := LoadFromEnv()
 	if err != nil {
 		t.Fatalf("LoadFromEnv returned error: %v", err)
 	}
-	if cfg.RedisOptions == nil || cfg.RedisOptions.Addr != "localhost:6379" || cfg.RedisOptions.Password != "" || cfg.RedisOptions.DB != 0 {
-		t.Fatalf("legacy Redis variables affected options: %+v", cfg.RedisOptions)
+	if cfg.MongoDatabase != "openai_status_bot_dev" {
+		t.Fatalf("MongoDatabase = %q, want openai_status_bot_dev", cfg.MongoDatabase)
 	}
 }

-func TestLoadFromEnvAcceptsRedisURLCredentials(t *testing.T) {
+func TestLoadFromEnvRequiresMongoURI(t *testing.T) {
 	setMinimalEnv(t)
-	t.Setenv("REDIS_URL", " redis://user:redis%40pass%3Awith%2Freserved@localhost:6380/2 ")
+	t.Setenv("MONGODB_URI", "")

-	cfg, err := LoadFromEnv()
-	if err != nil {
-		t.Fatalf("LoadFromEnv returned error: %v", err)
-	}
-	if cfg.RedisOptions == nil || cfg.RedisOptions.Addr != "localhost:6380" || cfg.RedisOptions.Username != "user" || cfg.RedisOptions.Password != "redis@pass:with/reserved" || cfg.RedisOptions.DB != 2 {
-		t.Fatalf("unexpected Redis options: %+v", cfg.RedisOptions)
+	_, err := LoadFromEnv()
+	if err == nil || !strings.Contains(err.Error(), "MONGODB_URI is required") {
+		t.Fatalf("error = %v, want MONGODB_URI required", err)
 	}
 }

@@ -63,22 +62,6 @@ func TestLoadFromEnvIgnoresOpenAIStatusBaseURL(t *testing.T) {
 	}
 }

-func TestLoadFromEnvDoesNotLeakRedisURLCredentialsInParseErrors(t *testing.T) {
-	setMinimalEnv(t)
-	t.Setenv("REDIS_URL", "redis://:secret%zz@localhost:6379/0")
-
-	_, err := LoadFromEnv()
-	if err == nil {
-		t.Fatal("expected error")
-	}
-	if strings.Contains(err.Error(), "secret") || strings.Contains(err.Error(), "secret%zz") {
-		t.Fatalf("error leaked Redis URL credentials: %q", err.Error())
-	}
-	if !strings.Contains(err.Error(), "REDIS_URL must be a valid Redis URL") {
-		t.Fatalf("error = %q, want generic Redis URL error", err.Error())
-	}
-}
-
 func TestLoadFromEnvAcceptsWarningLogAlias(t *testing.T) {
 	setMinimalEnv(t)
 	t.Setenv("LOG_LEVEL", "warning")
@@ -99,10 +82,6 @@ func TestLoadFromEnvRejectsInvalidValues(t *testing.T) {
 		value   string
 		wantErr string
 	}{
-		{name: "redis url missing scheme", key: "REDIS_URL", value: "localhost:6379", wantErr: "REDIS_URL must be a valid Redis URL"},
-		{name: "redis url invalid db", key: "REDIS_URL", value: "redis://localhost:6379/not-a-number", wantErr: "REDIS_URL must be a valid Redis URL"},
-		{name: "redis url db below range", key: "REDIS_URL", value: "redis://localhost:6379/-1", wantErr: "REDIS_URL database must be between 0 and 15"},
-		{name: "redis url db above range", key: "REDIS_URL", value: "redis://localhost:6379/16", wantErr: "REDIS_URL database must be between 0 and 15"},
 		{name: "poll interval too small", key: "POLL_INTERVAL", value: "1ns", wantErr: "POLL_INTERVAL must be between 5s and 1h0m0s"},
 		{name: "http timeout too small", key: "HTTP_TIMEOUT", value: "500ms", wantErr: "HTTP_TIMEOUT must be between 1s and 5m0s"},
 		{name: "invalid log level", key: "LOG_LEVEL", value: "verbose", wantErr: "LOG_LEVEL must be one of"},
@@ -127,7 +106,8 @@ func TestLoadFromEnvRejectsInvalidValues(t *testing.T) {
 func setMinimalEnv(t *testing.T) {
 	t.Helper()
 	t.Setenv("TELEGRAM_BOT_TOKEN", "token")
-	t.Setenv("REDIS_URL", "")
+	t.Setenv("MONGODB_URI", "mongodb+srv://user:pass@cluster.example.net/")
+	t.Setenv("MONGODB_DATABASE", "")
 	t.Setenv("POLL_INTERVAL", "")
 	t.Setenv("HTTP_TIMEOUT", "")
 	t.Setenv("LOG_LEVEL", "")
@@ -0,0 +1,185 @@
+package mongostore
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"go.mongodb.org/mongo-driver/v2/bson"
+	"go.mongodb.org/mongo-driver/v2/mongo"
+	"go.mongodb.org/mongo-driver/v2/mongo/options"
+)
+
+// deliveryTTL is the retention window for per-event delivery markers; enforced
+// by the TTL index in EnsureIndexes.
+const deliveryTTL = 7 * 24 * time.Hour
+
+type PendingComponentEvent struct {
+	ComponentID    string `bson:"_id"`
+	ComponentName  string `bson:"componentName"`
+	Status         string `bson:"status"`
+	UpdatedAt      string `bson:"updatedAt"`
+	Position       int    `bson:"position"`
+	PreviousStatus string `bson:"previousStatus"`
+	DeliveryKey    string `bson:"deliveryKey"`
+}
+
+func (s *Store) IsInitialized(ctx context.Context) (bool, error) {
+	err := s.meta.FindOne(ctx, bson.M{"_id": metaInitializedID}).Err()
+	if errors.Is(err, mongo.ErrNoDocuments) {
+		return false, nil
+	}
+	if err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
+func (s *Store) SetInitialized(ctx context.Context) error {
+	_, err := s.meta.UpdateOne(ctx, bson.M{"_id": metaInitializedID},
+		bson.M{"$set": bson.M{"value": true}}, options.UpdateOne().SetUpsert(true))
+	return err
+}
+
+func (s *Store) ComponentStatuses(ctx context.Context) (map[string]string, error) {
+	cursor, err := s.componentStatuses.Find(ctx, bson.M{})
+	if err != nil {
+		return nil, err
+	}
+	defer cursor.Close(ctx)
+
+	statuses := map[string]string{}
+	for cursor.Next(ctx) {
+		var doc struct {
+			ID     string `bson:"_id"`
+			Status string `bson:"status"`
+		}
+		if err := cursor.Decode(&doc); err != nil {
+			return nil, err
+		}
+		statuses[doc.ID] = doc.Status
+	}
+	if err := cursor.Err(); err != nil {
+		return nil, err
+	}
+	return statuses, nil
+}
+
+func (s *Store) SaveComponentStatus(ctx context.Context, componentID, status string) error {
+	_, err := s.componentStatuses.UpdateOne(ctx, bson.M{"_id": componentID},
+		bson.M{"$set": bson.M{"status": status}}, options.UpdateOne().SetUpsert(true))
+	return err
+}
+
+func (s *Store) PendingComponentEvents(ctx context.Context) (map[string]PendingComponentEvent, error) {
+	cursor, err := s.pendingComponentEvents.Find(ctx, bson.M{})
+	if err != nil {
+		return nil, err
+	}
+	defer cursor.Close(ctx)
+
+	events := map[string]PendingComponentEvent{}
+	for cursor.Next(ctx) {
+		var event PendingComponentEvent
+		if err := cursor.Decode(&event); err != nil {
+			return nil, err
+		}
+		events[event.ComponentID] = event
+	}
+	if err := cursor.Err(); err != nil {
+		return nil, err
+	}
+	return events, nil
+}
+
+func (s *Store) SavePendingComponentEvent(ctx context.Context, event PendingComponentEvent) error {
+	_, err := s.pendingComponentEvents.ReplaceOne(ctx, bson.M{"_id": event.ComponentID}, event,
+		options.Replace().SetUpsert(true))
+	return err
+}
+
+func (s *Store) RemovePendingComponentEvent(ctx context.Context, componentID string) error {
+	_, err := s.pendingComponentEvents.DeleteOne(ctx, bson.M{"_id": componentID})
+	return err
+}
+
+func (s *Store) HasIncidentUpdateVersion(ctx context.Context, updateID, version string) (bool, error) {
+	var doc struct {
+		Version string `bson:"version"`
+	}
+	err := s.incidentUpdateVersions.FindOne(ctx, bson.M{"_id": updateID}).Decode(&doc)
+	if errors.Is(err, mongo.ErrNoDocuments) {
+		return false, nil
+	}
+	if err != nil {
+		return false, err
+	}
+	return doc.Version == version, nil
+}
+
+func (s *Store) MarkIncidentUpdateVersion(ctx context.Context, updateID, version string) error {
+	_, err := s.incidentUpdateVersions.UpdateOne(ctx, bson.M{"_id": updateID},
+		bson.M{"$set": bson.M{"version": version}}, options.UpdateOne().SetUpsert(true))
+	return err
+}
+
+// DeliveredSubscribers returns the subscriber keys already notified for
+// eventKey. One Find replaces a per-subscriber membership check.
+func (s *Store) DeliveredSubscribers(ctx context.Context, eventKey string) (map[string]bool, error) {
+	cursor, err := s.delivery.Find(ctx, bson.M{"eventKey": eventKey})
+	if err != nil {
+		return nil, err
+	}
+	defer cursor.Close(ctx)
+
+	delivered := map[string]bool{}
+	for cursor.Next(ctx) {
+		var doc struct {
+			Subscriber string `bson:"subscriber"`
+		}
+		if err := cursor.Decode(&doc); err != nil {
+			return nil, err
+		}
+		delivered[doc.Subscriber] = true
+	}
+	if err := cursor.Err(); err != nil {
+		return nil, err
+	}
+	return delivered, nil
+}
+
+func (s *Store) MarkDelivered(ctx context.Context, eventKey, subscriberKey string) error {
+	id := eventKey + "|" + subscriberKey
+	update := bson.M{"$set": bson.M{
+		"eventKey":   eventKey,
+		"subscriber": subscriberKey,
+		"expiresAt":  time.Now().Add(deliveryTTL),
+	}}
+	_, err := s.delivery.UpdateOne(ctx, bson.M{"_id": id}, update, options.UpdateOne().SetUpsert(true))
+	return err
+}
+
+func (s *Store) ClearDelivery(ctx context.Context, eventKey string) error {
+	_, err := s.delivery.DeleteMany(ctx, bson.M{"eventKey": eventKey})
+	return err
+}
+
+func (s *Store) TelegramOffset(ctx context.Context) (int64, error) {
+	var doc struct {
+		Value int64 `bson:"value"`
+	}
+	err := s.meta.FindOne(ctx, bson.M{"_id": metaTelegramOffsetID}).Decode(&doc)
+	if errors.Is(err, mongo.ErrNoDocuments) {
+		return 0, nil
+	}
+	if err != nil {
+		return 0, err
+	}
+	return doc.Value, nil
+}
+
+func (s *Store) SaveTelegramOffset(ctx context.Context, offset int64) error {
+	_, err := s.meta.UpdateOne(ctx, bson.M{"_id": metaTelegramOffsetID},
+		bson.M{"$set": bson.M{"value": offset}}, options.UpdateOne().SetUpsert(true))
+	return err
+}
@@ -0,0 +1,30 @@
+package mongostore
+
+import (
+	"context"
+
+	"go.mongodb.org/mongo-driver/v2/bson"
+	"go.mongodb.org/mongo-driver/v2/mongo"
+	"go.mongodb.org/mongo-driver/v2/mongo/options"
+)
+
+// deliveryTTLSeconds is the TTL index expiry for delivery markers, in seconds
+// (7 days). Mongo's TTL monitor sweeps expired docs roughly once a minute,
+// which is irrelevant against a 7-day window.
+const deliveryTTLSeconds = int32(deliveryTTL / 1e9)
+
+// EnsureIndexes creates the indexes the store relies on. It is idempotent:
+// re-creating an existing identical index is a no-op.
+func (s *Store) EnsureIndexes(ctx context.Context) error {
+	_, err := s.delivery.Indexes().CreateMany(ctx, []mongo.IndexModel{
+		{
+			Keys:    bson.D{{Key: "expiresAt", Value: 1}},
+			Options: options.Index().SetExpireAfterSeconds(deliveryTTLSeconds),
+		},
+		{
+			// Speeds DeliveredSubscribers/ClearDelivery lookups by eventKey.
+			Keys: bson.D{{Key: "eventKey", Value: 1}},
+		},
+	})
+	return err
+}
@@ -0,0 +1,50 @@
+package mongostore
+
+import "go.mongodb.org/mongo-driver/v2/mongo"
+
+// Collection names. Each former Redis key becomes a MongoDB collection; the
+// document model collapses the subscribers set + settings hash into one
+// collection and replaces the per-event delivery sets with a single TTL-indexed
+// collection.
+const (
+	subscribersCollection            = "subscribers"
+	componentStatusesCollection      = "component_statuses"
+	pendingComponentEventsCollection = "pending_component_events"
+	incidentUpdateVersionsCollection = "incident_update_versions"
+	deliveryCollection               = "delivery"
+	metaCollection                   = "meta"
+)
+
+// meta document IDs.
+const (
+	metaInitializedID    = "initialized"
+	metaTelegramOffsetID = "telegramOffset"
+)
+
+const (
+	SubscriptionTypeIncident  = "incident"
+	SubscriptionTypeComponent = "component"
+)
+
+type Store struct {
+	db                     *mongo.Database
+	subscribers            *mongo.Collection
+	componentStatuses      *mongo.Collection
+	pendingComponentEvents *mongo.Collection
+	incidentUpdateVersions *mongo.Collection
+	delivery               *mongo.Collection
+	meta                   *mongo.Collection
+}
+
+func New(client *mongo.Client, dbName string) *Store {
+	db := client.Database(dbName)
+	return &Store{
+		db:                     db,
+		subscribers:            db.Collection(subscribersCollection),
+		componentStatuses:      db.Collection(componentStatusesCollection),
+		pendingComponentEvents: db.Collection(pendingComponentEventsCollection),
+		incidentUpdateVersions: db.Collection(incidentUpdateVersionsCollection),
+		delivery:               db.Collection(deliveryCollection),
+		meta:                   db.Collection(metaCollection),
+	}
+}
@@ -0,0 +1,358 @@
+//go:build integration
+
+// Package mongostore integration tests run against a real mongod via
+// testcontainers and are excluded from the default `go test ./...`. Run them
+// with Docker available:
+//
+//	go test -tags=integration ./internal/mongostore/...
+package mongostore
+
+import (
+	"context"
+	"strings"
+	"sync"
+	"testing"
+
+	"go.mongodb.org/mongo-driver/v2/bson"
+	"go.mongodb.org/mongo-driver/v2/mongo"
+	"go.mongodb.org/mongo-driver/v2/mongo/options"
+
+	tcmongo "github.com/testcontainers/testcontainers-go/modules/mongodb"
+)
+
+var (
+	sharedClientOnce sync.Once
+	sharedClient     *mongo.Client
+	sharedClientErr  error
+)
+
+// testMongo starts the shared mongod container once, then hands each test a
+// Store bound to a unique database that is dropped on cleanup.
+func testMongo(t *testing.T) *Store {
+	t.Helper()
+	ctx := context.Background()
+
+	sharedClientOnce.Do(func() {
+		container, err := tcmongo.Run(ctx, "mongo:7")
+		if err != nil {
+			sharedClientErr = err
+			return
+		}
+		uri, err := container.ConnectionString(ctx)
+		if err != nil {
+			sharedClientErr = err
+			return
+		}
+		// The container is intentionally left running for the whole package
+		// run; testcontainers' reaper removes it after the process exits.
+		_ = container
+		sharedClient, sharedClientErr = mongo.Connect(options.Client().ApplyURI(uri))
+	})
+	if sharedClientErr != nil {
+		t.Fatalf("start mongo container: %v", sharedClientErr)
+	}
+
+	dbName := "test_" + strings.NewReplacer("/", "_", " ", "_").Replace(t.Name())
+	db := sharedClient.Database(dbName)
+	t.Cleanup(func() {
+		_ = db.Drop(context.Background())
+	})
+
+	store := New(sharedClient, dbName)
+	if err := store.EnsureIndexes(ctx); err != nil {
+		t.Fatalf("EnsureIndexes: %v", err)
+	}
+	return store
+}
+
+func TestAddAndGetSubscriber(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	sub := NewSubscriber(123, nil)
+	if err := store.AddSubscriber(ctx, sub); err != nil {
+		t.Fatalf("AddSubscriber: %v", err)
+	}
+
+	got, exists, err := store.GetSubscriber(ctx, sub)
+	if err != nil || !exists {
+		t.Fatalf("GetSubscriber exists=%v err=%v", exists, err)
+	}
+	if len(got.Types) != 2 {
+		t.Fatalf("default Types = %v, want both defaults", got.Types)
+	}
+	if len(got.Components) != 0 {
+		t.Fatalf("default Components = %v, want empty", got.Components)
+	}
+}
+
+func TestAddSubscriberPreservesSettingsOnReStart(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	sub := NewSubscriber(123, nil)
+	if err := store.AddSubscriber(ctx, sub); err != nil {
+		t.Fatalf("AddSubscriber: %v", err)
+	}
+	if _, err := store.UpdateSubscriberSettings(ctx, sub, []string{SubscriptionTypeComponent}, []string{"c-api"}); err != nil {
+		t.Fatalf("UpdateSubscriberSettings: %v", err)
+	}
+	if err := store.AddSubscriber(ctx, sub); err != nil {
+		t.Fatalf("re-AddSubscriber: %v", err)
+	}
+
+	got, _, err := store.GetSubscriber(ctx, sub)
+	if err != nil {
+		t.Fatalf("GetSubscriber: %v", err)
+	}
+	if len(got.Types) != 1 || got.Types[0] != SubscriptionTypeComponent {
+		t.Fatalf("Types = %v, want preserved [component]", got.Types)
+	}
+	if len(got.Components) != 1 || got.Components[0] != "c-api" {
+		t.Fatalf("Components = %v, want preserved [c-api]", got.Components)
+	}
+}
+
+func TestGetSubscriberMissingReturnsFalse(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	_, exists, err := store.GetSubscriber(ctx, NewSubscriber(999, nil))
+	if err != nil {
+		t.Fatalf("GetSubscriber: %v", err)
+	}
+	if exists {
+		t.Fatal("exists = true, want false for missing subscriber")
+	}
+}
+
+func TestListSubscribersSelfHealsMalformedKey(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	good := NewSubscriber(1, nil)
+	if err := store.AddSubscriber(ctx, good); err != nil {
+		t.Fatalf("AddSubscriber: %v", err)
+	}
+	if _, err := store.subscribers.InsertOne(ctx, bson.M{"_id": "abc:def:ghi", "types": []string{}, "components": []string{}}); err != nil {
+		t.Fatalf("insert malformed subscriber: %v", err)
+	}
+
+	if _, err := store.ListSubscribers(ctx); err == nil {
+		t.Fatal("expected malformed key error on first list")
+	}
+	// Malformed doc was deleted; the next list succeeds with only the good one.
+	subs, err := store.ListSubscribers(ctx)
+	if err != nil {
+		t.Fatalf("second ListSubscribers: %v", err)
+	}
+	if len(subs) != 1 || subs[0].Key() != good.Key() {
+		t.Fatalf("subscribers = %v, want only %q", subs, good.Key())
+	}
+}
+
+func TestUpdateSubscriberSettingsMatchedVsMissing(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	sub := NewSubscriber(1, nil)
+
+	updated, err := store.UpdateSubscriberSettings(ctx, sub, []string{SubscriptionTypeComponent}, []string{"c-api"})
+	if err != nil {
+		t.Fatalf("UpdateSubscriberSettings: %v", err)
+	}
+	if updated {
+		t.Fatal("updated = true for missing subscriber, want false")
+	}
+
+	if err := store.AddSubscriber(ctx, sub); err != nil {
+		t.Fatalf("AddSubscriber: %v", err)
+	}
+	updated, err = store.UpdateSubscriberSettings(ctx, sub, []string{SubscriptionTypeComponent}, []string{"c-api"})
+	if err != nil {
+		t.Fatalf("UpdateSubscriberSettings: %v", err)
+	}
+	if !updated {
+		t.Fatal("updated = false for existing subscriber, want true")
+	}
+}
+
+func TestComponentStatusRoundTrip(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	if err := store.SaveComponentStatus(ctx, "c1", "degraded_performance"); err != nil {
+		t.Fatalf("SaveComponentStatus: %v", err)
+	}
+	if err := store.SaveComponentStatus(ctx, "c1", "operational"); err != nil {
+		t.Fatalf("SaveComponentStatus update: %v", err)
+	}
+	statuses, err := store.ComponentStatuses(ctx)
+	if err != nil {
+		t.Fatalf("ComponentStatuses: %v", err)
+	}
+	if statuses["c1"] != "operational" {
+		t.Fatalf("status = %q, want operational", statuses["c1"])
+	}
+}
+
+func TestPendingComponentEventRoundTrip(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	event := PendingComponentEvent{
+		ComponentID:    "c1",
+		ComponentName:  "API",
+		Status:         "degraded_performance",
+		UpdatedAt:      "2026-01-01T00:00:00Z",
+		Position:       2,
+		PreviousStatus: "operational",
+		DeliveryKey:    "component:c1:degraded_performance:2026-01-01T00:00:00Z",
+	}
+	if err := store.SavePendingComponentEvent(ctx, event); err != nil {
+		t.Fatalf("SavePendingComponentEvent: %v", err)
+	}
+	events, err := store.PendingComponentEvents(ctx)
+	if err != nil {
+		t.Fatalf("PendingComponentEvents: %v", err)
+	}
+	if got := events["c1"]; got != event {
+		t.Fatalf("event = %+v, want %+v", got, event)
+	}
+	if err := store.RemovePendingComponentEvent(ctx, "c1"); err != nil {
+		t.Fatalf("RemovePendingComponentEvent: %v", err)
+	}
+	events, err = store.PendingComponentEvents(ctx)
+	if err != nil {
+		t.Fatalf("PendingComponentEvents after remove: %v", err)
+	}
+	if len(events) != 0 {
+		t.Fatalf("events = %v, want empty after remove", events)
+	}
+}
+
+func TestIncidentUpdateVersionDedup(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	seen, err := store.HasIncidentUpdateVersion(ctx, "u1", "v1")
+	if err != nil {
+		t.Fatalf("HasIncidentUpdateVersion: %v", err)
+	}
+	if seen {
+		t.Fatal("unseen update reported as seen")
+	}
+	if err := store.MarkIncidentUpdateVersion(ctx, "u1", "v1"); err != nil {
+		t.Fatalf("MarkIncidentUpdateVersion: %v", err)
+	}
+	seen, err = store.HasIncidentUpdateVersion(ctx, "u1", "v1")
+	if err != nil || !seen {
+		t.Fatalf("same version seen=%v err=%v, want seen", seen, err)
+	}
+	// An edited update (new version) must notify again.
+	seen, err = store.HasIncidentUpdateVersion(ctx, "u1", "v2")
+	if err != nil {
+		t.Fatalf("HasIncidentUpdateVersion v2: %v", err)
+	}
+	if seen {
+		t.Fatal("edited update version reported as seen")
+	}
+}
+
+func TestDeliveryDedupAndClear(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	if err := store.MarkDelivered(ctx, "evt1", "sub-a"); err != nil {
+		t.Fatalf("MarkDelivered: %v", err)
+	}
+	if err := store.MarkDelivered(ctx, "evt1", "sub-b"); err != nil {
+		t.Fatalf("MarkDelivered: %v", err)
+	}
+	delivered, err := store.DeliveredSubscribers(ctx, "evt1")
+	if err != nil {
+		t.Fatalf("DeliveredSubscribers: %v", err)
+	}
+	if !delivered["sub-a"] || !delivered["sub-b"] || len(delivered) != 2 {
+		t.Fatalf("delivered = %v, want sub-a and sub-b", delivered)
+	}
+	if err := store.ClearDelivery(ctx, "evt1"); err != nil {
+		t.Fatalf("ClearDelivery: %v", err)
+	}
+	delivered, err = store.DeliveredSubscribers(ctx, "evt1")
+	if err != nil {
+		t.Fatalf("DeliveredSubscribers after clear: %v", err)
+	}
+	if len(delivered) != 0 {
+		t.Fatalf("delivered = %v, want empty after clear", delivered)
+	}
+}
+
+func TestDeliveryTTLIndexExists(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	cursor, err := store.delivery.Indexes().List(ctx)
+	if err != nil {
+		t.Fatalf("list indexes: %v", err)
+	}
+	var indexes []bson.M
+	if err := cursor.All(ctx, &indexes); err != nil {
+		t.Fatalf("decode indexes: %v", err)
+	}
+	found := false
+	for _, idx := range indexes {
+		if expire, ok := idx["expireAfterSeconds"]; ok {
+			if asInt(expire) == 604800 {
+				found = true
+			}
+		}
+	}
+	if !found {
+		t.Fatalf("no TTL index with expireAfterSeconds=604800 in %v", indexes)
+	}
+}
+
+func asInt(v any) int64 {
+	switch n := v.(type) {
+	case int32:
+		return int64(n)
+	case int64:
+		return n
+	case float64:
+		return int64(n)
+	default:
+		return -1
+	}
+}
+
+func TestTelegramOffsetRoundTrip(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	offset, err := store.TelegramOffset(ctx)
+	if err != nil {
+		t.Fatalf("TelegramOffset: %v", err)
+	}
+	if offset != 0 {
+		t.Fatalf("default offset = %d, want 0", offset)
+	}
+	if err := store.SaveTelegramOffset(ctx, 42); err != nil {
+		t.Fatalf("SaveTelegramOffset: %v", err)
+	}
+	offset, err = store.TelegramOffset(ctx)
+	if err != nil {
+		t.Fatalf("TelegramOffset: %v", err)
+	}
+	if offset != 42 {
+		t.Fatalf("offset = %d, want 42", offset)
+	}
+}
+
+func TestInitializedFlag(t *testing.T) {
+	ctx := context.Background()
+	store := testMongo(t)
+	initialized, err := store.IsInitialized(ctx)
+	if err != nil {
+		t.Fatalf("IsInitialized: %v", err)
+	}
+	if initialized {
+		t.Fatal("fresh store reported initialized")
+	}
+	if err := store.SetInitialized(ctx); err != nil {
+		t.Fatalf("SetInitialized: %v", err)
+	}
+	initialized, err = store.IsInitialized(ctx)
+	if err != nil || !initialized {
+		t.Fatalf("IsInitialized after set = %v err=%v, want true", initialized, err)
+	}
+}
@@ -0,0 +1,195 @@
+package mongostore
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"go.mongodb.org/mongo-driver/v2/bson"
+	"go.mongodb.org/mongo-driver/v2/mongo"
+	"go.mongodb.org/mongo-driver/v2/mongo/options"
+)
+
+type Subscriber struct {
+	ChatID     int64
+	ThreadID   *int
+	Types      []string
+	Components []string
+}
+
+// subscriberDoc is the stored shape of a subscriber. Identity lives in _id (the
+// subscriber key), mirroring the Redis design where the key held identity and a
+// separate hash held settings; chatID/threadID are denormalized for inspection.
+type subscriberDoc struct {
+	ID         string   `bson:"_id"`
+	ChatID     int64    `bson:"chatID"`
+	ThreadID   *int     `bson:"threadID,omitempty"`
+	Types      []string `bson:"types"`
+	Components []string `bson:"components"`
+}
+
+func NewSubscriber(chatID int64, threadID *int) Subscriber {
+	var copiedThreadID *int
+	if threadID != nil {
+		value := *threadID
+		copiedThreadID = &value
+	}
+	return Subscriber{
+		ChatID:     chatID,
+		ThreadID:   copiedThreadID,
+		Types:      DefaultSubscriptionTypes(),
+		Components: []string{},
+	}
+}
+
+func (s Subscriber) Key() string {
+	if s.ThreadID == nil {
+		return strconv.FormatInt(s.ChatID, 10)
+	}
+	return fmt.Sprintf("%d:%d", s.ChatID, *s.ThreadID)
+}
+
+func ParseSubscriberKey(value string) (Subscriber, error) {
+	parts := strings.Split(value, ":")
+	if len(parts) != 1 && len(parts) != 2 {
+		return Subscriber{}, fmt.Errorf("invalid subscriber key %q", value)
+	}
+
+	chatID, err := strconv.ParseInt(parts[0], 10, 64)
+	if err != nil {
+		return Subscriber{}, fmt.Errorf("invalid chat ID: %w", err)
+	}
+	if len(parts) == 1 {
+		return NewSubscriber(chatID, nil), nil
+	}
+
+	threadID, err := strconv.Atoi(parts[1])
+	if err != nil {
+		return Subscriber{}, fmt.Errorf("invalid thread ID: %w", err)
+	}
+	return NewSubscriber(chatID, &threadID), nil
+}
+
+func DefaultSubscriptionTypes() []string {
+	return []string{SubscriptionTypeIncident, SubscriptionTypeComponent}
+}
+
+func (s Subscriber) Accepts(eventType, componentID, componentName string) bool {
+	if !containsFold(s.Types, eventType) {
+		return false
+	}
+	if eventType != SubscriptionTypeComponent || len(s.Components) == 0 {
+		return true
+	}
+	return containsFold(s.Components, componentID) || containsFold(s.Components, componentName)
+}
+
+// AddSubscriber upserts the subscriber. An existing subscriber keeps its
+// settings on re-/start (only chatID/threadID are refreshed); a new subscriber
+// is seeded with default types and no component filter.
+func (s *Store) AddSubscriber(ctx context.Context, sub Subscriber) error {
+	// Identity lives in _id; chatID/threadID are denormalized for inspection.
+	// Omit threadID when absent so the stored shape matches subscriberDoc's
+	// omitempty decode (no explicit null).
+	set := bson.M{"chatID": sub.ChatID}
+	if sub.ThreadID != nil {
+		set["threadID"] = *sub.ThreadID
+	}
+	update := bson.M{
+		"$set": set,
+		"$setOnInsert": bson.M{
+			"types":      DefaultSubscriptionTypes(),
+			"components": []string{},
+		},
+	}
+	_, err := s.subscribers.UpdateOne(ctx, bson.M{"_id": sub.Key()}, update, options.UpdateOne().SetUpsert(true))
+	return err
+}
+
+func (s *Store) RemoveSubscriber(ctx context.Context, sub Subscriber) error {
+	_, err := s.subscribers.DeleteOne(ctx, bson.M{"_id": sub.Key()})
+	return err
+}
+
+func (s *Store) ListSubscribers(ctx context.Context) ([]Subscriber, error) {
+	cursor, err := s.subscribers.Find(ctx, bson.M{})
+	if err != nil {
+		return nil, err
+	}
+	defer cursor.Close(ctx)
+
+	var subscribers []Subscriber
+	for cursor.Next(ctx) {
+		var doc subscriberDoc
+		if err := cursor.Decode(&doc); err != nil {
+			return nil, err
+		}
+		sub, err := s.subscriberFromDoc(ctx, doc)
+		if err != nil {
+			return nil, err
+		}
+		subscribers = append(subscribers, sub)
+	}
+	if err := cursor.Err(); err != nil {
+		return nil, err
+	}
+	return subscribers, nil
+}
+
+func (s *Store) GetSubscriber(ctx context.Context, sub Subscriber) (Subscriber, bool, error) {
+	var doc subscriberDoc
+	if err := s.subscribers.FindOne(ctx, bson.M{"_id": sub.Key()}).Decode(&doc); err != nil {
+		if errors.Is(err, mongo.ErrNoDocuments) {
+			return Subscriber{}, false, nil
+		}
+		return Subscriber{}, false, err
+	}
+	resolved, err := s.subscriberFromDoc(ctx, doc)
+	if err != nil {
+		return Subscriber{}, false, err
+	}
+	return resolved, true, nil
+}
+
+func (s *Store) UpdateSubscriberTypes(ctx context.Context, sub Subscriber, types []string) (bool, error) {
+	return s.setSubscriberFields(ctx, sub.Key(), bson.M{"types": normalizeTypes(types)})
+}
+
+func (s *Store) UpdateSubscriberComponents(ctx context.Context, sub Subscriber, components []string) (bool, error) {
+	return s.setSubscriberFields(ctx, sub.Key(), bson.M{"components": normalizeComponents(components)})
+}
+
+func (s *Store) UpdateSubscriberSettings(ctx context.Context, sub Subscriber, types, components []string) (bool, error) {
+	return s.setSubscriberFields(ctx, sub.Key(), bson.M{
+		"types":      normalizeTypes(types),
+		"components": normalizeComponents(components),
+	})
+}
+
+// setSubscriberFields applies a $set only when the subscriber exists.
+// MatchedCount==0 means "not subscribed", replacing the Redis check-then-set
+// Lua script.
+func (s *Store) setSubscriberFields(ctx context.Context, key string, fields bson.M) (bool, error) {
+	result, err := s.subscribers.UpdateOne(ctx, bson.M{"_id": key}, bson.M{"$set": fields})
+	if err != nil {
+		return false, err
+	}
+	return result.MatchedCount > 0, nil
+}
+
+// subscriberFromDoc derives identity from the document _id (so a malformed key
+// self-heals as it did under Redis) and normalizes the stored settings.
+func (s *Store) subscriberFromDoc(ctx context.Context, doc subscriberDoc) (Subscriber, error) {
+	sub, err := ParseSubscriberKey(doc.ID)
+	if err != nil {
+		if _, removeErr := s.subscribers.DeleteOne(ctx, bson.M{"_id": doc.ID}); removeErr != nil {
+			return Subscriber{}, fmt.Errorf("remove malformed subscriber key %q: %w", doc.ID, removeErr)
+		}
+		return Subscriber{}, fmt.Errorf("malformed subscriber key %q: %w", doc.ID, err)
+	}
+	sub.Types = normalizeTypes(doc.Types)
+	sub.Components = normalizeComponents(doc.Components)
+	return sub, nil
+}
@@ -1,4 +1,4 @@
-package redisstore
+package mongostore

 import "strings"

@@ -0,0 +1,66 @@
+package mongostore
+
+import "testing"
+
+func TestSubscriberKeyRoundTripWithoutThread(t *testing.T) {
+	sub := NewSubscriber(12345, nil)
+	parsed, err := ParseSubscriberKey(sub.Key())
+	if err != nil {
+		t.Fatalf("ParseSubscriberKey returned error: %v", err)
+	}
+	if parsed.ChatID != sub.ChatID || parsed.ThreadID != nil {
+		t.Fatalf("parsed subscriber = %+v, want %+v", parsed, sub)
+	}
+}
+
+func TestSubscriberKeyRoundTripWithThreadZero(t *testing.T) {
+	threadID := 0
+	sub := NewSubscriber(-10012345, &threadID)
+	parsed, err := ParseSubscriberKey(sub.Key())
+	if err != nil {
+		t.Fatalf("ParseSubscriberKey returned error: %v", err)
+	}
+	if parsed.ChatID != sub.ChatID || parsed.ThreadID == nil || *parsed.ThreadID != threadID {
+		t.Fatalf("parsed subscriber = %+v, want thread ID %d", parsed, threadID)
+	}
+}
+
+func TestParseSubscriberKeyRejectsInvalidValue(t *testing.T) {
+	if _, err := ParseSubscriberKey("abc:def:ghi"); err == nil {
+		t.Fatal("expected invalid key error")
+	}
+}
+
+func TestSubscriberAcceptsComponentIDAndLegacyNameFilters(t *testing.T) {
+	sub := NewSubscriber(12345, nil)
+	sub.Components = []string{"component-id", "Legacy API Name"}
+	if !sub.Accepts(SubscriptionTypeComponent, "component-id", "API") {
+		t.Fatal("expected component ID filter to match")
+	}
+	if !sub.Accepts(SubscriptionTypeComponent, "other-id", "legacy api name") {
+		t.Fatal("expected legacy component name filter to match")
+	}
+	if sub.Accepts(SubscriptionTypeComponent, "other-id", "Other") {
+		t.Fatal("unexpected component filter match")
+	}
+}
+
+func TestNormalizeTypesDedupesAndDefaults(t *testing.T) {
+	got := normalizeTypes([]string{"incident", "component", "incident"})
+	if len(got) != 2 || got[0] != SubscriptionTypeIncident || got[1] != SubscriptionTypeComponent {
+		t.Fatalf("normalizeTypes = %v", got)
+	}
+	if def := normalizeTypes(nil); len(def) != 2 {
+		t.Fatalf("normalizeTypes(nil) = %v, want defaults", def)
+	}
+	if def := normalizeTypes([]string{"bogus"}); len(def) != 2 {
+		t.Fatalf("normalizeTypes(bogus) = %v, want defaults", def)
+	}
+}
+
+func TestNormalizeComponentsTrimsAndDedupes(t *testing.T) {
+	got := normalizeComponents([]string{" api ", "API", ""})
+	if len(got) != 1 || got[0] != "api" {
+		t.Fatalf("normalizeComponents = %v, want [api]", got)
+	}
+}
@@ -4,7 +4,7 @@ import (
 	"context"
 	"fmt"

-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 	"github.com/tiennm99/openai-status-bot/internal/telegram"
 )

@@ -44,7 +44,7 @@ func (e *deliveryError) addAll(other *deliveryError) {
 	e.count += other.count
 }

-func (r *Runner) notifySubscribers(ctx context.Context, event notificationEvent, subscribers []redisstore.Subscriber, removed, failed map[string]bool) (*deliveryError, error) {
+func (r *Runner) notifySubscribers(ctx context.Context, event notificationEvent, subscribers []mongostore.Subscriber, removed, failed map[string]bool) (*deliveryError, error) {
 	deliveryFailures := &deliveryError{}
 	var delivered map[string]bool
 	if event.deliveryKey != "" {
@@ -8,7 +8,7 @@ import (
 	"strings"

 	openai "github.com/tiennm99/openai-status-bot/internal/openai"
-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 )

 func (r *Runner) collectEvents(ctx context.Context, summary openai.Summary, incidents openai.IncidentsResponse, initialized bool) ([]notificationEvent, []checkpoint, []checkpoint, error) {
@@ -55,7 +55,7 @@ func (r *Runner) collectComponentEvents(ctx context.Context, summary openai.Summ
 		pendingEvent := pendingEvent
 		component := pendingComponent(pendingEvent)
 		events = append(events, notificationEvent{
-			eventType:     redisstore.SubscriptionTypeComponent,
+			eventType:     mongostore.SubscriptionTypeComponent,
 			componentID:   pendingEvent.ComponentID,
 			componentName: pendingEvent.ComponentName,
 			deliveryKey:   pendingEvent.DeliveryKey,
@@ -92,7 +92,7 @@ func (r *Runner) collectComponentEvents(ctx context.Context, summary openai.Summ
 		}

 		deliveryKey := fmt.Sprintf("component:%s:%s:%s", component.ID, component.Status, component.UpdatedAt)
-		pendingEvent := redisstore.PendingComponentEvent{
+		pendingEvent := mongostore.PendingComponentEvent{
 			ComponentID:    component.ID,
 			ComponentName:  component.Name,
 			Status:         component.Status,
@@ -105,7 +105,7 @@ func (r *Runner) collectComponentEvents(ctx context.Context, summary openai.Summ
 			return r.store.SavePendingComponentEvent(ctx, pendingEvent)
 		})
 		events = append(events, notificationEvent{
-			eventType:     redisstore.SubscriptionTypeComponent,
+			eventType:     mongostore.SubscriptionTypeComponent,
 			componentID:   component.ID,
 			componentName: component.Name,
 			deliveryKey:   deliveryKey,
@@ -151,7 +151,7 @@ func (r *Runner) collectIncidentEvents(ctx context.Context, response openai.Inci
 			deliveryKey := fmt.Sprintf("incident:%s:%s", update.ID, version)
 			if initialized && !seen {
 				events = append(events, notificationEvent{
-					eventType:   redisstore.SubscriptionTypeIncident,
+					eventType:   mongostore.SubscriptionTypeIncident,
 					deliveryKey: deliveryKey,
 					sortTime:    incidentUpdateSortTime(update),
 					text:        FormatIncidentUpdate(incident, update),
@@ -165,7 +165,7 @@ func (r *Runner) collectIncidentEvents(ctx context.Context, response openai.Inci
 	return events, checkpoints, nil
 }

-func pendingComponent(event redisstore.PendingComponentEvent) openai.Component {
+func pendingComponent(event mongostore.PendingComponentEvent) openai.Component {
 	return openai.Component{
 		ID:        event.ComponentID,
 		Name:      event.ComponentName,
@@ -175,7 +175,7 @@ func pendingComponent(event redisstore.PendingComponentEvent) openai.Component {
 	}
 }

-func componentsForDuplicateLabels(components []openai.Component, pending map[string]redisstore.PendingComponentEvent) []openai.Component {
+func componentsForDuplicateLabels(components []openai.Component, pending map[string]mongostore.PendingComponentEvent) []openai.Component {
 	result := make([]openai.Component, 0, len(components)+len(pending))
 	seen := map[string]bool{}
 	add := func(component openai.Component) {
@@ -6,7 +6,7 @@ import (
 	"time"

 	openai "github.com/tiennm99/openai-status-bot/internal/openai"
-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 )

 type StatusClient interface {
@@ -20,19 +20,19 @@ type Store interface {
 	DeliveredSubscribers(ctx context.Context, eventKey string) (map[string]bool, error)
 	HasIncidentUpdateVersion(ctx context.Context, updateID, version string) (bool, error)
 	IsInitialized(ctx context.Context) (bool, error)
-	ListSubscribers(ctx context.Context) ([]redisstore.Subscriber, error)
+	ListSubscribers(ctx context.Context) ([]mongostore.Subscriber, error)
 	MarkDelivered(ctx context.Context, eventKey, subscriberKey string) error
 	MarkIncidentUpdateVersion(ctx context.Context, updateID, version string) error
-	PendingComponentEvents(ctx context.Context) (map[string]redisstore.PendingComponentEvent, error)
+	PendingComponentEvents(ctx context.Context) (map[string]mongostore.PendingComponentEvent, error)
 	RemovePendingComponentEvent(ctx context.Context, componentID string) error
-	RemoveSubscriber(ctx context.Context, sub redisstore.Subscriber) error
-	SavePendingComponentEvent(ctx context.Context, event redisstore.PendingComponentEvent) error
+	RemoveSubscriber(ctx context.Context, sub mongostore.Subscriber) error
+	SavePendingComponentEvent(ctx context.Context, event mongostore.PendingComponentEvent) error
 	SaveComponentStatus(ctx context.Context, componentID, status string) error
 	SetInitialized(ctx context.Context) error
 }

 type Notifier interface {
-	SendMessage(ctx context.Context, sub redisstore.Subscriber, text string) error
+	SendMessage(ctx context.Context, sub mongostore.Subscriber, text string) error
 }

 type Runner struct {
@@ -9,7 +9,7 @@ import (
 	"time"

 	openai "github.com/tiennm99/openai-status-bot/internal/openai"
-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 	"github.com/tiennm99/openai-status-bot/internal/telegram"
 )

@@ -30,14 +30,14 @@ type fakePollerStore struct {
 	initialized       bool
 	componentStatuses map[string]string
 	incidentVersions  map[string]string
-	subscribers       []redisstore.Subscriber
+	subscribers       []mongostore.Subscriber
 	delivered         map[string]map[string]bool
 	hasDeliveredErr   error
 	markDeliveredErr  error
 	removeErr         error
 	savedComponents   map[string]string
 	markedVersions    map[string]string
-	pendingComponents map[string]redisstore.PendingComponentEvent
+	pendingComponents map[string]mongostore.PendingComponentEvent
 	removed           []string
 }

@@ -48,7 +48,7 @@ func newFakePollerStore() *fakePollerStore {
 		delivered:         map[string]map[string]bool{},
 		savedComponents:   map[string]string{},
 		markedVersions:    map[string]string{},
-		pendingComponents: map[string]redisstore.PendingComponentEvent{},
+		pendingComponents: map[string]mongostore.PendingComponentEvent{},
 	}
 }

@@ -77,7 +77,7 @@ func (f *fakePollerStore) IsInitialized(context.Context) (bool, error) {
 	return f.initialized, nil
 }

-func (f *fakePollerStore) ListSubscribers(context.Context) ([]redisstore.Subscriber, error) {
+func (f *fakePollerStore) ListSubscribers(context.Context) ([]mongostore.Subscriber, error) {
 	return f.subscribers, nil
 }

@@ -98,15 +98,15 @@ func (f *fakePollerStore) MarkIncidentUpdateVersion(_ context.Context, updateID,
 	return nil
 }

-func (f *fakePollerStore) PendingComponentEvents(context.Context) (map[string]redisstore.PendingComponentEvent, error) {
-	result := make(map[string]redisstore.PendingComponentEvent, len(f.pendingComponents))
+func (f *fakePollerStore) PendingComponentEvents(context.Context) (map[string]mongostore.PendingComponentEvent, error) {
+	result := make(map[string]mongostore.PendingComponentEvent, len(f.pendingComponents))
 	for key, value := range f.pendingComponents {
 		result[key] = value
 	}
 	return result, nil
 }

-func (f *fakePollerStore) SavePendingComponentEvent(_ context.Context, event redisstore.PendingComponentEvent) error {
+func (f *fakePollerStore) SavePendingComponentEvent(_ context.Context, event mongostore.PendingComponentEvent) error {
 	f.pendingComponents[event.ComponentID] = event
 	return nil
 }
@@ -116,7 +116,7 @@ func (f *fakePollerStore) RemovePendingComponentEvent(_ context.Context, compone
 	return nil
 }

-func (f *fakePollerStore) RemoveSubscriber(_ context.Context, sub redisstore.Subscriber) error {
+func (f *fakePollerStore) RemoveSubscriber(_ context.Context, sub mongostore.Subscriber) error {
 	if f.removeErr != nil {
 		return f.removeErr
 	}
@@ -142,7 +142,7 @@ type fakeNotifier struct {
 	messages   []string
 }

-func (f *fakeNotifier) SendMessage(_ context.Context, sub redisstore.Subscriber, text string) error {
+func (f *fakeNotifier) SendMessage(_ context.Context, sub mongostore.Subscriber, text string) error {
 	f.sends = append(f.sends, sub.Key())
 	f.messages = append(f.messages, text)
 	if queued := f.errorQueue[sub.Key()]; len(queued) > 0 {
@@ -160,7 +160,7 @@ func TestCheckOnceDoesNotCheckpointWhenSendFails(t *testing.T) {
 	store := newFakePollerStore()
 	store.initialized = true
 	store.componentStatuses["c1"] = "operational"
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil)}
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil)}
 	notifier := &fakeNotifier{errors: map[string]error{"1": errors.New("network")}}
 	runner := NewRunner(fakeStatusClient{summary: summaryWithComponent("c1", "API", "degraded_performance")}, store, notifier, time.Minute, slog.Default())

@@ -176,7 +176,7 @@ func TestCheckOnceSkipsAlreadyDeliveredSubscriberOnRetry(t *testing.T) {
 	store := newFakePollerStore()
 	store.initialized = true
 	store.componentStatuses["c1"] = "operational"
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil), redisstore.NewSubscriber(2, nil)}
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil), mongostore.NewSubscriber(2, nil)}
 	notifier := &fakeNotifier{errors: map[string]error{"2": errors.New("rate limit")}}
 	runner := NewRunner(fakeStatusClient{summary: summaryWithComponent("c1", "API", "degraded_performance")}, store, notifier, time.Minute, slog.Default())

@@ -204,7 +204,7 @@ func TestCheckOnceContinuesFanOutAfterRetryableSendFailures(t *testing.T) {
 	store.initialized = true
 	store.componentStatuses["c1"] = "operational"
 	store.componentStatuses["c2"] = "operational"
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil), redisstore.NewSubscriber(2, nil)}
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil), mongostore.NewSubscriber(2, nil)}
 	notifier := &fakeNotifier{errors: map[string]error{"1": errors.New("rate limit")}}
 	runner := NewRunner(fakeStatusClient{summary: openai.Summary{Components: []openai.Component{
 		{ID: "c1", Name: "API", Status: "degraded_performance", UpdatedAt: "2026-01-01T00:00:00Z"},
@@ -227,15 +227,15 @@ func TestCheckOnceStopsOnDeliveryStateReadError(t *testing.T) {
 	store.initialized = true
 	store.componentStatuses["c1"] = "operational"
 	store.componentStatuses["c2"] = "operational"
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil)}
-	store.hasDeliveredErr = errors.New("redis read failed")
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil)}
+	store.hasDeliveredErr = errors.New("store read failed")
 	notifier := &fakeNotifier{}
 	runner := NewRunner(fakeStatusClient{summary: openai.Summary{Components: []openai.Component{
 		{ID: "c1", Name: "API", Status: "degraded_performance", UpdatedAt: "2026-01-01T00:00:00Z"},
 		{ID: "c2", Name: "ChatGPT", Status: "partial_outage", UpdatedAt: "2026-01-01T00:01:00Z"},
 	}}}, store, notifier, time.Minute, slog.Default())

-	if err := runner.CheckOnce(context.Background()); err == nil || !strings.Contains(err.Error(), "redis read failed") {
+	if err := runner.CheckOnce(context.Background()); err == nil || !strings.Contains(err.Error(), "store read failed") {
 		t.Fatalf("CheckOnce error = %v, want delivery state read error", err)
 	}
 	if len(notifier.sends) != 0 {
@@ -248,15 +248,15 @@ func TestCheckOnceStopsWhenTerminalSubscriberRemovalFails(t *testing.T) {
 	store.initialized = true
 	store.componentStatuses["c1"] = "operational"
 	store.componentStatuses["c2"] = "operational"
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil)}
-	store.removeErr = errors.New("redis remove failed")
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil)}
+	store.removeErr = errors.New("store remove failed")
 	notifier := &fakeNotifier{errors: map[string]error{"1": &telegram.APIError{StatusCode: 200, ErrorCode: 403, Description: "Forbidden: bot was blocked by the user"}}}
 	runner := NewRunner(fakeStatusClient{summary: openai.Summary{Components: []openai.Component{
 		{ID: "c1", Name: "API", Status: "degraded_performance", UpdatedAt: "2026-01-01T00:00:00Z"},
 		{ID: "c2", Name: "ChatGPT", Status: "partial_outage", UpdatedAt: "2026-01-01T00:01:00Z"},
 	}}}, store, notifier, time.Minute, slog.Default())

-	if err := runner.CheckOnce(context.Background()); err == nil || !strings.Contains(err.Error(), "redis remove failed") {
+	if err := runner.CheckOnce(context.Background()); err == nil || !strings.Contains(err.Error(), "store remove failed") {
 		t.Fatalf("CheckOnce error = %v, want subscriber remove error", err)
 	}
 	if got, want := notifier.sends, []string{"1"}; !equalStrings(got, want) {
@@ -269,7 +269,7 @@ func TestCheckOnceSkipsLaterEventsForSubscriberAfterRetryableFailure(t *testing.
 	store.initialized = true
 	store.componentStatuses["c1"] = "operational"
 	store.componentStatuses["c2"] = "operational"
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil), redisstore.NewSubscriber(2, nil)}
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil), mongostore.NewSubscriber(2, nil)}
 	notifier := &fakeNotifier{errorQueue: map[string][]error{"1": {errors.New("rate limit")}}}
 	runner := NewRunner(fakeStatusClient{summary: openai.Summary{Components: []openai.Component{
 		{ID: "c1", Name: "API", Status: "degraded_performance", UpdatedAt: "2026-01-01T00:00:00Z"},
@@ -288,7 +288,7 @@ func TestCheckOnceRemovesTerminalSubscriberAndCheckpoints(t *testing.T) {
 	store := newFakePollerStore()
 	store.initialized = true
 	store.componentStatuses["c1"] = "operational"
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil), redisstore.NewSubscriber(2, nil)}
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil), mongostore.NewSubscriber(2, nil)}
 	notifier := &fakeNotifier{errors: map[string]error{"2": &telegram.APIError{StatusCode: 200, ErrorCode: 403, Description: "Forbidden: bot was blocked by the user"}}}
 	runner := NewRunner(fakeStatusClient{summary: summaryWithComponent("c1", "API", "degraded_performance")}, store, notifier, time.Minute, slog.Default())

@@ -308,7 +308,7 @@ func TestIncidentUpdateVersionEditSendsAgain(t *testing.T) {
 	store := newFakePollerStore()
 	store.initialized = true
 	store.incidentVersions["u1"] = IncidentUpdateVersion(update)
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil)}
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil)}
 	updated := openai.IncidentUpdate{ID: "u1", Body: "new", UpdatedAt: "2026-01-01T00:01:00Z"}
 	notifier := &fakeNotifier{}
 	runner := NewRunner(fakeStatusClient{incidents: openai.IncidentsResponse{Incidents: []openai.Incident{{ID: "i1", Name: "incident", Impact: "minor", IncidentUpdates: []openai.IncidentUpdate{updated}}}}}, store, notifier, time.Minute, slog.Default())
@@ -328,7 +328,7 @@ func TestPendingComponentEventSurvivesReturnToPreviousStatus(t *testing.T) {
 	store := newFakePollerStore()
 	store.initialized = true
 	store.componentStatuses["c1"] = "operational"
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil), redisstore.NewSubscriber(2, nil)}
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil), mongostore.NewSubscriber(2, nil)}
 	notifier := &fakeNotifier{errors: map[string]error{"2": errors.New("rate limit")}}
 	runner := NewRunner(fakeStatusClient{summary: summaryWithComponent("c1", "API", "degraded_performance")}, store, notifier, time.Minute, slog.Default())

@@ -371,7 +371,7 @@ func TestPendingComponentLabelDoesNotCountCurrentComponentAsDuplicate(t *testing
 	store := newFakePollerStore()
 	store.initialized = true
 	store.componentStatuses["c1"] = "operational"
-	store.pendingComponents["c1"] = redisstore.PendingComponentEvent{
+	store.pendingComponents["c1"] = mongostore.PendingComponentEvent{
 		ComponentID:    "c1",
 		ComponentName:  "API",
 		Status:         "degraded_performance",
@@ -379,7 +379,7 @@ func TestPendingComponentLabelDoesNotCountCurrentComponentAsDuplicate(t *testing
 		PreviousStatus: "operational",
 		DeliveryKey:    "component:c1:degraded_performance:2026-01-01T00:00:00Z",
 	}
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil)}
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil)}
 	notifier := &fakeNotifier{}
 	runner := NewRunner(fakeStatusClient{summary: summaryWithComponent("c1", "API", "degraded_performance")}, store, notifier, time.Minute, slog.Default())

@@ -395,7 +395,7 @@ func TestPendingComponentLabelDoesNotCountCurrentComponentAsDuplicate(t *testing
 }

 func TestPendingComponentDuplicateLabelsIncludeCurrentRename(t *testing.T) {
-	pending := map[string]redisstore.PendingComponentEvent{
+	pending := map[string]mongostore.PendingComponentEvent{
 		"c1": {
 			ComponentID:   "c1",
 			ComponentName: "Old API",
@@ -420,8 +420,8 @@ func TestCheckOnceContinuesWhenMarkDeliveredFailsAfterSend(t *testing.T) {
 	store := newFakePollerStore()
 	store.initialized = true
 	store.componentStatuses["c1"] = "operational"
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil)}
-	store.markDeliveredErr = errors.New("redis write failed")
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil)}
+	store.markDeliveredErr = errors.New("store write failed")
 	notifier := &fakeNotifier{}
 	runner := NewRunner(fakeStatusClient{summary: summaryWithComponent("c1", "API", "degraded_performance")}, store, notifier, time.Minute, slog.Default())

@@ -451,7 +451,7 @@ func TestCheckOnceDoesNotRemarkSeenIncidentVersion(t *testing.T) {
 	store := newFakePollerStore()
 	store.initialized = true
 	store.incidentVersions["u1"] = IncidentUpdateVersion(update)
-	store.subscribers = []redisstore.Subscriber{redisstore.NewSubscriber(1, nil)}
+	store.subscribers = []mongostore.Subscriber{mongostore.NewSubscriber(1, nil)}
 	notifier := &fakeNotifier{}
 	runner := NewRunner(fakeStatusClient{incidents: openai.IncidentsResponse{Incidents: []openai.Incident{{ID: "i1", Name: "incident", Impact: "minor", IncidentUpdates: []openai.IncidentUpdate{update}}}}}, store, notifier, time.Minute, slog.Default())

@@ -1,171 +0,0 @@
-package redisstore
-
-import (
-	"context"
-	"crypto/sha256"
-	"encoding/hex"
-	"encoding/json"
-	"fmt"
-	"strconv"
-	"time"
-
-	"github.com/redis/go-redis/v9"
-)
-
-func (s *Store) IsInitialized(ctx context.Context) (bool, error) {
-	count, err := s.client.Exists(ctx, initializedKey).Result()
-	return count > 0, err
-}
-
-func (s *Store) SetInitialized(ctx context.Context) error {
-	return s.client.Set(ctx, initializedKey, "1", 0).Err()
-}
-
-func (s *Store) ComponentStatuses(ctx context.Context) (map[string]string, error) {
-	return s.client.HGetAll(ctx, componentStatusesKey).Result()
-}
-
-func (s *Store) SaveComponentStatus(ctx context.Context, componentID, status string) error {
-	return s.client.HSet(ctx, componentStatusesKey, componentID, status).Err()
-}
-
-type PendingComponentEvent struct {
-	ComponentID    string `json:"component_id"`
-	ComponentName  string `json:"component_name"`
-	Status         string `json:"status"`
-	UpdatedAt      string `json:"updated_at"`
-	Position       int    `json:"position"`
-	PreviousStatus string `json:"previous_status"`
-	DeliveryKey    string `json:"delivery_key"`
-}
-
-func (s *Store) PendingComponentEvents(ctx context.Context) (map[string]PendingComponentEvent, error) {
-	values, err := s.client.HGetAll(ctx, pendingComponentsKey).Result()
-	if err != nil {
-		return nil, err
-	}
-	events := make(map[string]PendingComponentEvent, len(values))
-	for componentID, value := range values {
-		event, err := decodePendingComponentEvent(componentID, value)
-		if err != nil {
-			return nil, err
-		}
-		events[componentID] = event
-	}
-	return events, nil
-}
-
-func decodePendingComponentEvent(componentID, value string) (PendingComponentEvent, error) {
-	var event PendingComponentEvent
-	if err := json.Unmarshal([]byte(value), &event); err != nil {
-		return PendingComponentEvent{}, fmt.Errorf("decode pending component event %q: %w", componentID, err)
-	}
-	if event.ComponentID == "" {
-		event.ComponentID = componentID
-	}
-	return event, nil
-}
-
-func (s *Store) SavePendingComponentEvent(ctx context.Context, event PendingComponentEvent) error {
-	payload, err := json.Marshal(event)
-	if err != nil {
-		return err
-	}
-	return s.client.HSet(ctx, pendingComponentsKey, event.ComponentID, payload).Err()
-}
-
-func (s *Store) RemovePendingComponentEvent(ctx context.Context, componentID string) error {
-	return s.client.HDel(ctx, pendingComponentsKey, componentID).Err()
-}
-
-func (s *Store) HasIncidentUpdate(ctx context.Context, updateID string) (bool, error) {
-	return s.client.SIsMember(ctx, incidentUpdatesKey, updateID).Result()
-}
-
-func (s *Store) MarkIncidentUpdate(ctx context.Context, updateID string) error {
-	return s.client.SAdd(ctx, incidentUpdatesKey, updateID).Err()
-}
-
-func (s *Store) HasIncidentUpdateVersion(ctx context.Context, updateID, version string) (bool, error) {
-	stored, err := s.client.HGet(ctx, incidentVersionsKey, updateID).Result()
-	if err == nil {
-		return stored == version, nil
-	}
-	if err != redis.Nil {
-		return false, err
-	}
-	legacySeen, err := s.HasIncidentUpdate(ctx, updateID)
-	if err != nil {
-		return false, err
-	}
-	if legacySeen {
-		if err := s.client.HSet(ctx, incidentVersionsKey, updateID, version).Err(); err != nil {
-			return false, err
-		}
-		return true, nil
-	}
-	return false, nil
-}
-
-func (s *Store) MarkIncidentUpdateVersion(ctx context.Context, updateID, version string) error {
-	pipe := s.client.TxPipeline()
-	pipe.HSet(ctx, incidentVersionsKey, updateID, version)
-	pipe.SAdd(ctx, incidentUpdatesKey, updateID)
-	_, err := pipe.Exec(ctx)
-	return err
-}
-
-// DeliveredSubscribers returns the set of subscriber keys already notified for
-// eventKey. Callers fan a single event out to every subscriber, so one SMEMBERS
-// plus in-memory lookups replaces one SISMEMBER per subscriber.
-func (s *Store) DeliveredSubscribers(ctx context.Context, eventKey string) (map[string]bool, error) {
-	members, err := s.client.SMembers(ctx, deliveryStateKey(eventKey)).Result()
-	if err != nil {
-		return nil, err
-	}
-	delivered := make(map[string]bool, len(members))
-	for _, member := range members {
-		delivered[member] = true
-	}
-	return delivered, nil
-}
-
-func (s *Store) MarkDelivered(ctx context.Context, eventKey, subscriberKey string) error {
-	key := deliveryStateKey(eventKey)
-	pipe := s.client.TxPipeline()
-	pipe.SAdd(ctx, key, subscriberKey)
-	pipe.Expire(ctx, key, 7*24*time.Hour)
-	_, err := pipe.Exec(ctx)
-	return err
-}
-
-func (s *Store) ClearDelivery(ctx context.Context, eventKey string) error {
-	return s.client.Del(ctx, deliveryStateKey(eventKey)).Err()
-}
-
-func (s *Store) TelegramOffset(ctx context.Context) (int64, error) {
-	value, err := s.client.Get(ctx, telegramOffsetKey).Result()
-	if err == redis.Nil {
-		return 0, nil
-	}
-	if err != nil {
-		return 0, err
-	}
-	offset, err := strconv.ParseInt(value, 10, 64)
-	if err != nil {
-		if deleteErr := s.client.Del(ctx, telegramOffsetKey).Err(); deleteErr != nil {
-			return 0, fmt.Errorf("clear invalid telegram offset: %w", deleteErr)
-		}
-		return 0, nil
-	}
-	return offset, nil
-}
-
-func (s *Store) SaveTelegramOffset(ctx context.Context, offset int64) error {
-	return s.client.Set(ctx, telegramOffsetKey, strconv.FormatInt(offset, 10), 0).Err()
-}
-
-func deliveryStateKey(eventKey string) string {
-	sum := sha256.Sum256([]byte(eventKey))
-	return "openai-status:event-delivery:" + hex.EncodeToString(sum[:])
-}
@@ -1,27 +0,0 @@
-package redisstore
-
-import "github.com/redis/go-redis/v9"
-
-const (
-	subscribersKey        = "openai-status:subscribers"
-	subscriberSettingsKey = "openai-status:subscriber-settings"
-	componentStatusesKey  = "openai-status:component-statuses"
-	pendingComponentsKey  = "openai-status:pending-component-events"
-	incidentUpdatesKey    = "openai-status:incident-updates"
-	incidentVersionsKey   = "openai-status:incident-update-versions"
-	initializedKey        = "openai-status:initialized"
-	telegramOffsetKey     = "openai-status:telegram-offset"
-)
-
-const (
-	SubscriptionTypeIncident  = "incident"
-	SubscriptionTypeComponent = "component"
-)
-
-type Store struct {
-	client redis.UniversalClient
-}
-
-func New(client redis.UniversalClient) *Store {
-	return &Store{client: client}
-}
@@ -1,243 +0,0 @@
-package redisstore
-
-import (
-	"context"
-	"testing"
-
-	"github.com/alicebob/miniredis/v2"
-	"github.com/redis/go-redis/v9"
-)
-
-func TestSubscriberKeyRoundTripWithoutThread(t *testing.T) {
-	sub := NewSubscriber(12345, nil)
-	parsed, err := ParseSubscriberKey(sub.Key())
-	if err != nil {
-		t.Fatalf("ParseSubscriberKey returned error: %v", err)
-	}
-	if parsed.ChatID != sub.ChatID || parsed.ThreadID != nil {
-		t.Fatalf("parsed subscriber = %+v, want %+v", parsed, sub)
-	}
-}
-
-func TestSubscriberKeyRoundTripWithThreadZero(t *testing.T) {
-	threadID := 0
-	sub := NewSubscriber(-10012345, &threadID)
-	parsed, err := ParseSubscriberKey(sub.Key())
-	if err != nil {
-		t.Fatalf("ParseSubscriberKey returned error: %v", err)
-	}
-	if parsed.ChatID != sub.ChatID || parsed.ThreadID == nil || *parsed.ThreadID != threadID {
-		t.Fatalf("parsed subscriber = %+v, want thread ID %d", parsed, threadID)
-	}
-}
-
-func TestParseSubscriberKeyRejectsInvalidValue(t *testing.T) {
-	if _, err := ParseSubscriberKey("abc:def:ghi"); err == nil {
-		t.Fatal("expected invalid key error")
-	}
-}
-
-func TestSubscriberAcceptsComponentIDAndLegacyNameFilters(t *testing.T) {
-	sub := NewSubscriber(12345, nil)
-	sub.Components = []string{"component-id", "Legacy API Name"}
-	if !sub.Accepts(SubscriptionTypeComponent, "component-id", "API") {
-		t.Fatal("expected component ID filter to match")
-	}
-	if !sub.Accepts(SubscriptionTypeComponent, "other-id", "legacy api name") {
-		t.Fatal("expected legacy component name filter to match")
-	}
-	if sub.Accepts(SubscriptionTypeComponent, "other-id", "Other") {
-		t.Fatal("unexpected component filter match")
-	}
-}
-
-func TestDecodePendingComponentEventBackfillsComponentID(t *testing.T) {
-	event, err := decodePendingComponentEvent("c1", `{"component_name":"API","status":"operational"}`)
-	if err != nil {
-		t.Fatalf("decodePendingComponentEvent returned error: %v", err)
-	}
-	if event.ComponentID != "c1" {
-		t.Fatalf("ComponentID = %q, want c1", event.ComponentID)
-	}
-}
-
-func TestDecodePendingComponentEventRejectsCorruptedPayload(t *testing.T) {
-	if _, err := decodePendingComponentEvent("c1", `{bad json`); err == nil {
-		t.Fatal("expected corrupted pending event error")
-	}
-}
-
-func TestDecodeSubscriberSettingsNormalizesValues(t *testing.T) {
-	settings, err := decodeSubscriberSettings("123", `{"types":["incident","component","incident"],"components":[" api ","API",""]}`)
-	if err != nil {
-		t.Fatalf("decodeSubscriberSettings returned error: %v", err)
-	}
-	if len(settings.Types) != 2 || settings.Types[0] != SubscriptionTypeIncident || settings.Types[1] != SubscriptionTypeComponent {
-		t.Fatalf("Types = %v", settings.Types)
-	}
-	if len(settings.Components) != 1 || settings.Components[0] != "api" {
-		t.Fatalf("Components = %v", settings.Components)
-	}
-}
-
-func TestDecodeSubscriberSettingsRejectsCorruptedPayload(t *testing.T) {
-	if _, err := decodeSubscriberSettings("123", `{bad json`); err == nil {
-		t.Fatal("expected corrupted subscriber settings error")
-	}
-}
-
-func TestListSubscribersRecoversCorruptSettingsWithoutBlockingOthers(t *testing.T) {
-	ctx := context.Background()
-	store, client := newTestStore(t)
-	good := NewSubscriber(1, nil)
-	corrupt := NewSubscriber(2, nil)
-	if err := client.SAdd(ctx, subscribersKey, good.Key(), corrupt.Key()).Err(); err != nil {
-		t.Fatalf("SAdd subscribers: %v", err)
-	}
-	if err := client.HSet(ctx, subscriberSettingsKey, good.Key(), `{"types":["incident"],"components":[]}`).Err(); err != nil {
-		t.Fatalf("HSet good settings: %v", err)
-	}
-	if err := client.HSet(ctx, subscriberSettingsKey, corrupt.Key(), `{bad json`).Err(); err != nil {
-		t.Fatalf("HSet corrupt settings: %v", err)
-	}
-
-	subscribers, err := store.ListSubscribers(ctx)
-	if err != nil {
-		t.Fatalf("ListSubscribers returned error: %v", err)
-	}
-	byKey := map[string]Subscriber{}
-	for _, subscriber := range subscribers {
-		byKey[subscriber.Key()] = subscriber
-	}
-	if len(byKey) != 2 {
-		t.Fatalf("subscribers = %v, want two subscribers", subscribers)
-	}
-	if got := byKey[good.Key()].Types; len(got) != 1 || got[0] != SubscriptionTypeIncident {
-		t.Fatalf("good Types = %v, want [incident]", got)
-	}
-	if got := byKey[corrupt.Key()].Types; len(got) != 2 {
-		t.Fatalf("corrupt Types = %v, want default types", got)
-	}
-	exists, err := client.HExists(ctx, subscriberSettingsKey, corrupt.Key()).Result()
-	if err != nil {
-		t.Fatalf("HExists corrupt settings: %v", err)
-	}
-	if exists {
-		t.Fatal("corrupt settings field still exists")
-	}
-}
-
-func TestUpdateSubscriberSettingsSavesTypesAndComponentsTogether(t *testing.T) {
-	ctx := context.Background()
-	store, _ := newTestStore(t)
-	sub := NewSubscriber(1, nil)
-	if err := store.AddSubscriber(ctx, sub); err != nil {
-		t.Fatalf("AddSubscriber returned error: %v", err)
-	}
-
-	updated, err := store.UpdateSubscriberSettings(ctx, sub, []string{SubscriptionTypeComponent}, []string{"c-api"})
-	if err != nil {
-		t.Fatalf("UpdateSubscriberSettings returned error: %v", err)
-	}
-	if !updated {
-		t.Fatal("UpdateSubscriberSettings updated = false, want true")
-	}
-	got, exists, err := store.GetSubscriber(ctx, sub)
-	if err != nil {
-		t.Fatalf("GetSubscriber returned error: %v", err)
-	}
-	if !exists {
-		t.Fatal("subscriber missing after update")
-	}
-	if len(got.Types) != 1 || got.Types[0] != SubscriptionTypeComponent {
-		t.Fatalf("Types = %v, want [component]", got.Types)
-	}
-	if len(got.Components) != 1 || got.Components[0] != "c-api" {
-		t.Fatalf("Components = %v, want [c-api]", got.Components)
-	}
-}
-
-func TestUpdateSubscriberSettingsReturnsFalseForMissingSubscriber(t *testing.T) {
-	ctx := context.Background()
-	store, client := newTestStore(t)
-	sub := NewSubscriber(1, nil)
-
-	updated, err := store.UpdateSubscriberSettings(ctx, sub, []string{SubscriptionTypeComponent}, []string{"c-api"})
-	if err != nil {
-		t.Fatalf("UpdateSubscriberSettings returned error: %v", err)
-	}
-	if updated {
-		t.Fatal("UpdateSubscriberSettings updated = true, want false")
-	}
-	exists, err := client.HExists(ctx, subscriberSettingsKey, sub.Key()).Result()
-	if err != nil {
-		t.Fatalf("HExists settings: %v", err)
-	}
-	if exists {
-		t.Fatal("settings were written for missing subscriber")
-	}
-}
-
-func TestHasIncidentUpdateVersionMigratesLegacySeenUpdate(t *testing.T) {
-	ctx := context.Background()
-	store, client := newTestStore(t)
-	if err := client.SAdd(ctx, incidentUpdatesKey, "u1").Err(); err != nil {
-		t.Fatalf("SAdd legacy incident update: %v", err)
-	}
-
-	seen, err := store.HasIncidentUpdateVersion(ctx, "u1", "v1")
-	if err != nil {
-		t.Fatalf("HasIncidentUpdateVersion returned error: %v", err)
-	}
-	if !seen {
-		t.Fatal("legacy incident update was not treated as seen")
-	}
-	stored, err := client.HGet(ctx, incidentVersionsKey, "u1").Result()
-	if err != nil {
-		t.Fatalf("HGet migrated incident version: %v", err)
-	}
-	if stored != "v1" {
-		t.Fatalf("stored version = %q, want v1", stored)
-	}
-
-	seen, err = store.HasIncidentUpdateVersion(ctx, "u1", "v2")
-	if err != nil {
-		t.Fatalf("HasIncidentUpdateVersion changed version returned error: %v", err)
-	}
-	if seen {
-		t.Fatal("changed incident update version should not be treated as seen")
-	}
-}
-
-func TestTelegramOffsetClearsInvalidStoredValue(t *testing.T) {
-	ctx := context.Background()
-	store, client := newTestStore(t)
-	if err := client.Set(ctx, telegramOffsetKey, "not-an-offset", 0).Err(); err != nil {
-		t.Fatalf("Set invalid telegram offset: %v", err)
-	}
-
-	offset, err := store.TelegramOffset(ctx)
-	if err != nil {
-		t.Fatalf("TelegramOffset returned error: %v", err)
-	}
-	if offset != 0 {
-		t.Fatalf("offset = %d, want 0", offset)
-	}
-	exists, err := client.Exists(ctx, telegramOffsetKey).Result()
-	if err != nil {
-		t.Fatalf("Exists telegram offset: %v", err)
-	}
-	if exists != 0 {
-		t.Fatal("invalid telegram offset key was not cleared")
-	}
-}
-
-func newTestStore(t *testing.T) (*Store, *redis.Client) {
-	t.Helper()
-	server := miniredis.RunT(t)
-	client := redis.NewClient(&redis.Options{Addr: server.Addr()})
-	t.Cleanup(func() {
-		_ = client.Close()
-	})
-	return New(client), client
-}
@@ -1,181 +0,0 @@
-package redisstore
-
-import (
-	"context"
-	"fmt"
-	"strconv"
-	"strings"
-)
-
-type Subscriber struct {
-	ChatID     int64
-	ThreadID   *int
-	Types      []string
-	Components []string
-}
-
-func NewSubscriber(chatID int64, threadID *int) Subscriber {
-	var copiedThreadID *int
-	if threadID != nil {
-		value := *threadID
-		copiedThreadID = &value
-	}
-	return Subscriber{
-		ChatID:     chatID,
-		ThreadID:   copiedThreadID,
-		Types:      DefaultSubscriptionTypes(),
-		Components: []string{},
-	}
-}
-
-func (s Subscriber) Key() string {
-	if s.ThreadID == nil {
-		return strconv.FormatInt(s.ChatID, 10)
-	}
-	return fmt.Sprintf("%d:%d", s.ChatID, *s.ThreadID)
-}
-
-func ParseSubscriberKey(value string) (Subscriber, error) {
-	parts := strings.Split(value, ":")
-	if len(parts) != 1 && len(parts) != 2 {
-		return Subscriber{}, fmt.Errorf("invalid subscriber key %q", value)
-	}
-
-	chatID, err := strconv.ParseInt(parts[0], 10, 64)
-	if err != nil {
-		return Subscriber{}, fmt.Errorf("invalid chat ID: %w", err)
-	}
-	if len(parts) == 1 {
-		return NewSubscriber(chatID, nil), nil
-	}
-
-	threadID, err := strconv.Atoi(parts[1])
-	if err != nil {
-		return Subscriber{}, fmt.Errorf("invalid thread ID: %w", err)
-	}
-	return NewSubscriber(chatID, &threadID), nil
-}
-
-func DefaultSubscriptionTypes() []string {
-	return []string{SubscriptionTypeIncident, SubscriptionTypeComponent}
-}
-
-func (s Subscriber) Accepts(eventType, componentID, componentName string) bool {
-	if !containsFold(s.Types, eventType) {
-		return false
-	}
-	if eventType != SubscriptionTypeComponent || len(s.Components) == 0 {
-		return true
-	}
-	return containsFold(s.Components, componentID) || containsFold(s.Components, componentName)
-}
-
-func (s *Store) AddSubscriber(ctx context.Context, sub Subscriber) error {
-	key := sub.Key()
-	settings, err := s.loadSubscriberSettings(ctx, key)
-	if err != nil {
-		return err
-	}
-	if err := s.client.SAdd(ctx, subscribersKey, key).Err(); err != nil {
-		return err
-	}
-	return s.saveSubscriberSettings(ctx, key, settings)
-}
-
-func (s *Store) RemoveSubscriber(ctx context.Context, sub Subscriber) error {
-	key := sub.Key()
-	pipe := s.client.TxPipeline()
-	pipe.SRem(ctx, subscribersKey, key)
-	pipe.HDel(ctx, subscriberSettingsKey, key)
-	_, err := pipe.Exec(ctx)
-	return err
-}
-
-func (s *Store) ListSubscribers(ctx context.Context) ([]Subscriber, error) {
-	keys, err := s.client.SMembers(ctx, subscribersKey).Result()
-	if err != nil {
-		return nil, err
-	}
-
-	// Fetch every subscriber's settings in one HGETALL instead of one HGET per
-	// key. The settings hash mirrors the subscribers set, so its size is the
-	// subscriber count rather than unbounded history.
-	settingsByKey, err := s.client.HGetAll(ctx, subscriberSettingsKey).Result()
-	if err != nil {
-		return nil, err
-	}
-
-	subscribers := make([]Subscriber, 0, len(keys))
-	for _, key := range keys {
-		sub, err := ParseSubscriberKey(key)
-		if err != nil {
-			if removeErr := s.client.SRem(ctx, subscribersKey, key).Err(); removeErr != nil {
-				return nil, fmt.Errorf("remove malformed subscriber key %q: %w", key, removeErr)
-			}
-			return nil, fmt.Errorf("malformed subscriber key %q: %w", key, err)
-		}
-		value, present := settingsByKey[key]
-		settings, err := s.resolveSubscriberSettings(ctx, key, value, present)
-		if err != nil {
-			return nil, err
-		}
-		sub.Types = settings.Types
-		sub.Components = settings.Components
-		subscribers = append(subscribers, sub)
-	}
-	return subscribers, nil
-}
-
-func (s *Store) GetSubscriber(ctx context.Context, sub Subscriber) (Subscriber, bool, error) {
-	key := sub.Key()
-	exists, err := s.client.SIsMember(ctx, subscribersKey, key).Result()
-	if err != nil || !exists {
-		return Subscriber{}, false, err
-	}
-	return s.loadSubscriber(ctx, key)
-}
-
-func (s *Store) UpdateSubscriberTypes(ctx context.Context, sub Subscriber, types []string) (bool, error) {
-	key := sub.Key()
-	settings, exists, err := s.loadExistingSubscriberSettings(ctx, key)
-	if err != nil || !exists {
-		return false, err
-	}
-	settings.Types = normalizeTypes(types)
-	return s.saveExistingSubscriberSettings(ctx, key, settings)
-}
-
-func (s *Store) UpdateSubscriberComponents(ctx context.Context, sub Subscriber, components []string) (bool, error) {
-	key := sub.Key()
-	settings, exists, err := s.loadExistingSubscriberSettings(ctx, key)
-	if err != nil || !exists {
-		return false, err
-	}
-	settings.Components = normalizeComponents(components)
-	return s.saveExistingSubscriberSettings(ctx, key, settings)
-}
-
-func (s *Store) UpdateSubscriberSettings(ctx context.Context, sub Subscriber, types, components []string) (bool, error) {
-	key := sub.Key()
-	return s.saveExistingSubscriberSettings(ctx, key, subscriberSettings{
-		Types:      types,
-		Components: components,
-	})
-}
-
-func (s *Store) loadSubscriber(ctx context.Context, key string) (Subscriber, bool, error) {
-	sub, err := ParseSubscriberKey(key)
-	if err != nil {
-		if removeErr := s.client.SRem(ctx, subscribersKey, key).Err(); removeErr != nil {
-			return Subscriber{}, false, fmt.Errorf("remove malformed subscriber key %q: %w", key, removeErr)
-		}
-		return Subscriber{}, false, fmt.Errorf("malformed subscriber key %q: %w", key, err)
-	}
-	settings, err := s.loadSubscriberSettings(ctx, key)
-	if err != nil {
-		return Subscriber{}, false, err
-	}
-	sub.Types = settings.Types
-	sub.Components = settings.Components
-	return sub, true, nil
-}
@@ -1,99 +0,0 @@
-package redisstore
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-
-	"github.com/redis/go-redis/v9"
-)
-
-type subscriberSettings struct {
-	Types      []string `json:"types"`
-	Components []string `json:"components"`
-}
-
-var updateSubscriberSettingsScript = redis.NewScript(`
-if redis.call("SISMEMBER", KEYS[1], ARGV[1]) == 0 then
-	return 0
-end
-redis.call("HSET", KEYS[2], ARGV[1], ARGV[2])
-return 1
-`)
-
-func (s *Store) loadExistingSubscriberSettings(ctx context.Context, key string) (subscriberSettings, bool, error) {
-	exists, err := s.client.SIsMember(ctx, subscribersKey, key).Result()
-	if err != nil || !exists {
-		return subscriberSettings{}, false, err
-	}
-	settings, err := s.loadSubscriberSettings(ctx, key)
-	return settings, true, err
-}
-
-func (s *Store) loadSubscriberSettings(ctx context.Context, key string) (subscriberSettings, error) {
-	value, err := s.client.HGet(ctx, subscriberSettingsKey, key).Result()
-	if err == redis.Nil {
-		return s.resolveSubscriberSettings(ctx, key, "", false)
-	}
-	if err != nil {
-		return subscriberSettings{}, err
-	}
-	return s.resolveSubscriberSettings(ctx, key, value, true)
-}
-
-// resolveSubscriberSettings turns a raw settings hash value into decoded
-// settings. It lets callers that already hold the value (e.g. a batched
-// HGETALL in ListSubscribers) reuse the same decode/default/self-heal logic as
-// the single-key HGET path. Absent or corrupt values fall back to defaults,
-// dropping the corrupt field so it heals on next write.
-func (s *Store) resolveSubscriberSettings(ctx context.Context, key, value string, present bool) (subscriberSettings, error) {
-	if !present {
-		return defaultSubscriberSettings(), nil
-	}
-	settings, err := decodeSubscriberSettings(key, value)
-	if err == nil {
-		return settings, nil
-	}
-	if removeErr := s.client.HDel(ctx, subscriberSettingsKey, key).Err(); removeErr != nil {
-		return subscriberSettings{}, fmt.Errorf("clear corrupt subscriber settings %q: %w", key, removeErr)
-	}
-	return defaultSubscriberSettings(), nil
-}
-
-func decodeSubscriberSettings(key, value string) (subscriberSettings, error) {
-	var settings subscriberSettings
-	if err := json.Unmarshal([]byte(value), &settings); err != nil {
-		return subscriberSettings{}, fmt.Errorf("decode subscriber settings %q: %w", key, err)
-	}
-	settings.Types = normalizeTypes(settings.Types)
-	settings.Components = normalizeComponents(settings.Components)
-	return settings, nil
-}
-
-func (s *Store) saveSubscriberSettings(ctx context.Context, key string, settings subscriberSettings) error {
-	settings.Types = normalizeTypes(settings.Types)
-	settings.Components = normalizeComponents(settings.Components)
-	payload, err := json.Marshal(settings)
-	if err != nil {
-		return err
-	}
-	return s.client.HSet(ctx, subscriberSettingsKey, key, payload).Err()
-}
-
-func (s *Store) saveExistingSubscriberSettings(ctx context.Context, key string, settings subscriberSettings) (bool, error) {
-	settings.Types = normalizeTypes(settings.Types)
-	settings.Components = normalizeComponents(settings.Components)
-	payload, err := json.Marshal(settings)
-	if err != nil {
-		return false, err
-	}
-	updated, err := updateSubscriberSettingsScript.Run(ctx, s.client, []string{subscribersKey, subscriberSettingsKey}, key, string(payload)).Int()
-	if err != nil {
-		return false, err
-	}
-	return updated == 1, nil
-}
-
-func defaultSubscriberSettings() subscriberSettings {
-	return subscriberSettings{Types: DefaultSubscriptionTypes(), Components: []string{}}
-}
@@ -10,7 +10,7 @@ import (
 	"strings"
 	"time"

-	"github.com/tiennm99/openai-status-bot/internal/redisstore"
+	"github.com/tiennm99/openai-status-bot/internal/mongostore"
 )

 type Client struct {
@@ -105,7 +105,7 @@ func (c *Client) GetUpdates(ctx context.Context, offset int64, timeoutSeconds in
 	return updates, nil
 }

-func (c *Client) SendMessage(ctx context.Context, sub redisstore.Subscriber, text string) error {
+func (c *Client) SendMessage(ctx context.Context, sub mongostore.Subscriber, text string) error {
 	return c.SendText(ctx, sub.ChatID, sub.ThreadID, text)
 }

@@ -0,0 +1,65 @@
+---
+phase: 1
+title: "Suitability & Decision"
+status: complete
+effort: "research-only (no code)"
+---
+
+# Phase 1: Suitability & Decision
+
+## Overview
+
+Decide whether MongoDB is the right datastore for this bot before writing code. This phase is the answer to "is it suitable for our case." No code; output is the recorded verdict below.
+
+## Workload facts (from codebase)
+
+- State is tiny: one set of subscribers (count = number of Telegram chats), per-subscriber settings, ~dozens of component statuses, a handful of pending component events, incident-update version markers, one `initialized` flag, one telegram offset, and short-lived per-event delivery markers.
+- Access pattern: one poll/minute (default `POLL_INTERVAL=1m`) + occasional command handling. No hot path, no high QPS, no large values.
+- Already abstracted behind `poller.Store` / `bot.Store` interfaces (`internal/poller/poller.go:17`, `internal/bot/bot.go:25`).
+- Redis-specific mechanisms in use: a Lua script for atomic check-then-set (`internal/redisstore/subscriber_settings.go:16`), `EXPIRE` for 7-day delivery dedup TTL (`internal/redisstore/checkpoint.go:137`), and `TxPipeline` for multi-key atomicity (RemoveSubscriber, MarkDelivered, MarkIncidentUpdateVersion).
+
+## Redis → MongoDB capability mapping
+
+| Redis usage | MongoDB equivalent | Notes |
+|---|---|---|
+| `subscribers` SET + `subscriber-settings` HASH | single `subscribers` collection, one doc per subscriber (`_id` = subscriber key, `types`/`components` fields) | **Collapses two keys into one doc**; eliminates the SRem+HDel `TxPipeline` in RemoveSubscriber |
+| Lua check-then-set on settings | `UpdateOne(filter{_id}, $set)`, read `MatchedCount` | `MatchedCount==0` ⇒ not subscribed; replaces the Lua script |
+| `component-statuses` HASH | `component_statuses` collection, doc per component | upsert via `UpdateOne(SetUpsert)` |
+| `pending-component-events` HASH (JSON) | `pending_component_events` collection, doc per component | native BSON fields, no manual JSON marshal needed |
+| `incident-update-versions` HASH + legacy `incident-updates` SET | `incident_update_versions` collection, doc per updateID | **legacy SET + migration fallback (`checkpoint.go:89-108`) dropped** — fresh DB, no legacy data |
+| `event-delivery:<sha>` SET + `EXPIRE 7d` | `delivery` collection, doc per (eventKey, subscriber) + **TTL index** on `expiresAt` | `MarkDelivered` becomes one upsert (no SAdd+Expire pair); sha256 key-hashing dropped (Mongo handles arbitrary string values) |
+| `initialized` flag, `telegram-offset` | `meta` collection, doc per key | trivial FindOne/upsert |
+
+All driver specifics confirmed against MongoDB Go driver **v2** (`go.mongodb.org/mongo-driver/v2`, latest v2.7.0, 2026): `ApplyURI` parses `mongodb+srv://` Atlas URIs; TTL via `IndexModel` + `SetExpireAfterSeconds`; `UpdateOne`/`MatchedCount` and `SetUpsert(true)` cover conditional set and upsert.
+
+## Verdict
+
+**Suitable: YES. Justified: YES** (given the stated motivation — team already runs MongoDB, so dropping Redis consolidates ops onto one datastore).
+
+Functionally, MongoDB does everything Redis does here, and the document model **simplifies** the code: three multi-key `TxPipeline` sequences collapse into single-document operations, the Lua script disappears, and the legacy incident-dedup migration path is deleted (no data to migrate). Latency and TTL-sweep granularity (~60s) are irrelevant at one poll/minute with a 7-day dedup window.
+
+### Trade-offs to accept (be honest)
+
+1. **Testing regression (the real cost).** `miniredis` is pure-Go, in-memory, zero-binary, instant. MongoDB has **no equivalent** — every option runs a real `mongod`: `testcontainers-go` (needs Docker in CI, ~2-3s/suite) or `memongo` (downloads a ~100MB `mongod` binary, UNIX-only, primary repo stale — prefer the `tryvium-travels/memongo` fork). CI gains a Docker/binary dependency and slows down. This is a genuine downgrade in test ergonomics and the main argument *against* switching absent the ops motivation.
+2. Heavier runtime dependency and image than the tiny `go-redis` client (acceptable; not a hot path).
+3. Loss of Redis's trivial single-process local dev (`redis:7-alpine`); replaced by a **required Atlas connection** (no local DB — both dev and prod use Atlas, separated by database name).
+
+### When NOT to switch
+If the only driver were "exploring" with no infra reason, staying on Redis would be the KISS choice — Redis is the better technical fit for this exact workload. The switch is recommended **only because** MongoDB is already operated and consolidation has real ops value.
+
+## Implementation Steps
+
+1. Confirm the motivation still holds (already-run MongoDB / managed external host) before committing to Phases 2-5.
+2. Accept the testing trade-off. **Decided (Session 1):** testcontainers-go, gated behind `//go:build integration` and run manually later — default `go test` stays Docker-free (Phase 5).
+3. Proceed to Phase 2.
+
+## Success Criteria
+
+- [x] Verdict reviewed and motivation reconfirmed (already-run MongoDB / Atlas).
+- [x] Test backend decided: testcontainers, gated + deferred (Session 1).
+- [x] Testing trade-off accepted.
+
+## Risk Assessment
+
+- Risk: team underestimates CI impact of losing `miniredis`. Mitigation: Phase 5 makes the test backend explicit and a gating decision here.
+- Risk: managed MongoDB connectivity/auth from the bot's deploy environment. Mitigation: validate `MONGODB_URI` reachability early (Phase 2 ping on startup, same as current Redis ping in `main.go:38`).
@@ -0,0 +1,59 @@
+---
+phase: 2
+title: "Store Package & Connection"
+status: complete
+effort: "S"
+---
+
+# Phase 2: Store Package & Connection
+
+## Overview
+
+Create `internal/mongostore` with the connection plumbing, collection handles, index bootstrap, and the storage-agnostic domain types/logic moved over verbatim from `redisstore`. No consumer wiring yet (Phase 4); `redisstore` still exists in parallel until Phase 5.
+
+## Requirements
+
+- Functional: open a MongoDB client from a URI, ping on startup, expose a `Store` holding collection handles, ensure required indexes exist idempotently.
+- Non-functional: keep exported type/constant names identical to `redisstore` so Phase 5 is a qualifier swap, not a rewrite of consumers.
+
+## Architecture
+
+Collections (database name from config, default `openai_status_bot`):
+
+- `subscribers` — `{_id: "<chatID>"|"<chatID:threadID>", chatID, threadID, types[], components[]}`
+- `component_statuses` — `{_id: componentID, status}`
+- `pending_component_events` — `{_id: componentID, componentName, status, updatedAt, position, previousStatus, deliveryKey}`
+- `incident_update_versions` — `{_id: updateID, version}`
+- `delivery` — `{_id: "<eventKey>|<subscriber>", eventKey, subscriber, expiresAt}` (TTL index on `expiresAt`)
+- `meta` — `{_id: "initialized"|"telegramOffset", value}`
+
+Indexes ensured on startup:
+- `delivery`: TTL index `{expiresAt:1}` with `ExpireAfterSeconds(604800)` (7 days). The compound key is encoded in `_id`, so no extra unique index needed; an additional non-unique `{eventKey:1}` index speeds `DeliveredSubscribers`/`ClearDelivery` lookups.
+- All other collections use `_id` only — no extra indexes.
+
+## Related Code Files
+
+- Create: `internal/mongostore/store.go` — `Store` struct, `New(client *mongo.Client, dbName string) *Store`, collection handles, collection-name constants (replacing the `*Key` constants in `redisstore/store.go`), `SubscriptionType*` constants.
+- Create: `internal/mongostore/indexes.go` — `EnsureIndexes(ctx) error` (TTL + eventKey index).
+- Create: `internal/mongostore/subscriber.go` — move `Subscriber`, `NewSubscriber`, `ParseSubscriberKey`, `Key()`, `Accepts`, `DefaultSubscriptionTypes` **verbatim** (pure logic, storage-agnostic).
+- Create: `internal/mongostore/subscriber_normalization.go` — move `normalizeTypes`, `normalizeComponents`, `containsFold` **verbatim**.
+- Reference (driver, Phase 4 adds to go.mod): `go.mongodb.org/mongo-driver/v2/mongo`, `.../mongo/options`, `.../bson`.
+
+## Implementation Steps
+
+1. `go get go.mongodb.org/mongo-driver/v2@latest` (adds to go.mod; full dep cleanup in Phase 4).
+2. Write `store.go`: define collection-name constants, `Store` struct holding `*mongo.Database` + per-collection `*mongo.Collection` handles, and `New(client, dbName)`.
+3. Write `subscriber.go` and `subscriber_normalization.go` by copying the storage-agnostic code from the matching `redisstore` files unchanged except the package name.
+4. Write `indexes.go` with `EnsureIndexes` creating the TTL index (`options.Index().SetExpireAfterSeconds(604800)`) and the `{eventKey:1}` index via `Indexes().CreateMany`. Idempotent — re-creating an existing index is a no-op/ignored error.
+5. `go build ./internal/mongostore/...` to confirm the package compiles in isolation.
+
+## Success Criteria
+
+- [ ] `internal/mongostore` compiles standalone.
+- [ ] Exported names match `redisstore` (`Subscriber`, `PendingComponentEvent` [added Phase 3], `NewSubscriber`, `DefaultSubscriptionTypes`, `SubscriptionTypeIncident/Component`).
+- [ ] `EnsureIndexes` creates the TTL index with 604800s expiry.
+
+## Risk Assessment
+
+- Risk: driver v2 import path differs from v1 examples. Mitigation: pin `go.mongodb.org/mongo-driver/v2`; `mongo.Connect(options.Client().ApplyURI(uri))` (no separate `ctx` arg in v2 `Connect`).
+- Risk: index creation race on multi-instance deploy. Mitigation: single-instance bot; `CreateMany` is idempotent regardless.
@@ -0,0 +1,67 @@
+---
+phase: 3
+title: "Implement Store Methods"
+status: complete
+effort: "M"
+---
+
+# Phase 3: Implement Store Methods
+
+## Overview
+
+Implement every method required by `poller.Store` and `bot.Store` against MongoDB, matching the existing semantics exactly (return values, "exists" booleans, defaults, self-heal-on-corrupt behavior where applicable).
+
+## Requirements
+
+Satisfy the full interface surface (from `internal/poller/poller.go:17` and `internal/bot/bot.go:25`):
+
+Subscribers/settings: `AddSubscriber`, `RemoveSubscriber`, `ListSubscribers`, `GetSubscriber`, `UpdateSubscriberTypes`, `UpdateSubscriberComponents`, `UpdateSubscriberSettings`.
+Checkpoint/state: `ComponentStatuses`, `SaveComponentStatus`, `PendingComponentEvents`, `SavePendingComponentEvent`, `RemovePendingComponentEvent`, `HasIncidentUpdateVersion`, `MarkIncidentUpdateVersion`, `DeliveredSubscribers`, `MarkDelivered`, `ClearDelivery`, `IsInitialized`, `SetInitialized`, `TelegramOffset`, `SaveTelegramOffset`.
+
+## Architecture / semantics mapping
+
+- `PendingComponentEvent` struct moves to `mongostore` with BSON tags; stored as native fields (drop the manual `json.Marshal`/`Unmarshal` from `checkpoint.go:58-75`).
+- **AddSubscriber**: `UpdateOne({_id:key}, {$set:{chatID,threadID}, $setOnInsert:{types:defaults, components:[]}}, upsert)`. Preserves existing settings on re-`/start` (matches current load-then-save behavior at `subscriber.go:73-83`).
+- **RemoveSubscriber**: `DeleteOne({_id:key})` — single op (was SRem+HDel TxPipeline).
+- **ListSubscribers**: `Find({})` + `cursor.All`. Decode straight into `Subscriber` (was SMEMBERS + HGETALL); keep the malformed-key self-heal: on decode/parse failure for a doc, `DeleteOne` it and continue or error (preserve current behavior at `subscriber.go:108-125`).
+- **GetSubscriber**: `FindOne({_id:key})`; `ErrNoDocuments` ⇒ `(zero,false,nil)`.
+- **UpdateSubscriberTypes/Components/Settings**: `UpdateOne({_id:key}, {$set:{...}})`; `MatchedCount==0` ⇒ `(false,nil)` (replaces the Lua check-then-set). Apply `normalizeTypes`/`normalizeComponents` before write, same as today.
+- **ComponentStatuses**: `Find({})` → `map[string]string{_id: status}`.
+- **SaveComponentStatus**: `UpdateOne({_id}, {$set:{status}}, upsert)`.
+- **PendingComponentEvents**: `Find({})` → `map[string]PendingComponentEvent`.
+- **SavePendingComponentEvent / RemovePendingComponentEvent**: upsert / `DeleteOne` by `_id=componentID`.
+- **HasIncidentUpdateVersion**: `FindOne({_id:updateID})`; compare stored `version`. **Drop the legacy `incident-updates` SET fallback** (`checkpoint.go:97-106`) — no legacy data on a fresh DB.
+- **MarkIncidentUpdateVersion**: `UpdateOne({_id:updateID}, {$set:{version}}, upsert)` — single op (was HSet+SAdd TxPipeline).
+- **DeliveredSubscribers**: `Find({eventKey})` → `map[string]bool{subscriber:true}`.
+- **MarkDelivered**: `UpdateOne({_id: eventKey+"|"+subscriber}, {$set:{eventKey,subscriber,expiresAt: now+7d}}, upsert)` — single op with TTL (was SAdd+Expire TxPipeline). `now` from `time.Now()`.
+- **ClearDelivery**: `DeleteMany({eventKey})`. Drop sha256 key-hashing (`deliveryStateKey`, `checkpoint.go:168`).
+- **IsInitialized / SetInitialized**: `meta` doc `_id:"initialized"` — `FindOne` exists / upsert `{value:true}`.
+- **TelegramOffset / SaveTelegramOffset**: `meta` doc `_id:"telegramOffset"` — `FindOne` (default 0 on `ErrNoDocuments`, and clear-on-invalid like `checkpoint.go:155-160` is no longer needed since BSON stores an int natively) / upsert `{value:offset}`.
+
+## Related Code Files
+
+- Create: `internal/mongostore/subscriber.go` (extend Phase 2 file with the subscriber CRUD methods).
+- Create: `internal/mongostore/subscriber_settings.go` — `subscriberSettings` decode/normalize helpers (drop the Lua script; keep normalization), or fold into subscriber.go if small (KISS).
+- Create: `internal/mongostore/checkpoint.go` — `PendingComponentEvent` (BSON tags) + all checkpoint/delivery/meta/component methods.
+- Reference: `internal/poller/poller.go:17`, `internal/bot/bot.go:25` (interface contracts to satisfy).
+
+## Implementation Steps
+
+1. Add `PendingComponentEvent` with BSON tags to `checkpoint.go`.
+2. Implement subscriber CRUD + settings methods; verify against `bot.Store` signatures.
+3. Implement checkpoint/delivery/meta/component methods; verify against `poller.Store` signatures.
+4. Add a compile-time assertion file or inline `var _ poller.Store = (*Store)(nil)` / `var _ bot.Store = (*Store)(nil)` (only after Phase 5 imports align — or assert against locally redeclared interfaces during this phase) to catch signature drift.
+5. `go build ./internal/mongostore/...`.
+
+## Success Criteria
+
+- [ ] All listed methods implemented with matching signatures and semantics.
+- [ ] No `TxPipeline`/Lua equivalents needed — each former multi-key op is a single document op.
+- [ ] Legacy incident-dedup fallback and sha256 delivery-key hashing removed.
+- [ ] Package compiles.
+
+## Risk Assessment
+
+- Risk: `MatchedCount` vs `ModifiedCount` confusion in conditional updates. Mitigation: use `MatchedCount` for "did the subscriber exist" (a no-op `$set` to identical values still matches but may not modify).
+- Risk: telegram offset stored as BSON int32 vs int64. Mitigation: store/read as `int64` explicitly in BSON.
+- Risk: decode of self-healed malformed subscriber docs. Mitigation: replicate current delete-and-continue/error path; cover in Phase 5 tests.
@@ -0,0 +1,51 @@
+---
+phase: 4
+title: "Config Wiring & Deployment"
+status: complete
+effort: "S"
+---
+
+# Phase 4: Config Wiring & Deployment
+
+## Overview
+
+Replace Redis configuration, connection bootstrap, and deployment artifacts with MongoDB equivalents. After this phase `main.go` builds the Mongo client; consumer type swap is Phase 5.
+
+<!-- Updated: Validation Session 1 - Atlas for both envs; one cluster, two DBs selected by MONGODB_DATABASE; no local mongo service -->
+
+## Requirements
+
+- New env: `MONGODB_URI` (Atlas `mongodb+srv://...`, **required**, no localhost default — there is no local DB), `MONGODB_DATABASE` (default `openai_status_bot`; dev env sets a separate name e.g. `openai_status_bot_dev`). Remove `REDIS_URL`.
+- `main.go` connects, pings, ensures indexes, constructs `mongostore.New(client, dbName)`.
+- Deployment (validated): **Atlas for both prod and dev** — single cluster, two databases differentiated by `MONGODB_DATABASE`. **No local `mongo` service** in any compose file.
+
+## Architecture
+
+`config.Config`: replace `RedisOptions *redis.Options` with `MongoURI string` + `MongoDatabase string`. Drop `parseRedisURL`, `minRedisDB`/`maxRedisDB`. Validation: `MONGODB_URI` **required** (error if empty, like `TELEGRAM_BOT_TOKEN` at `config.go:35-38` — no localhost fallback since both envs use Atlas); `MONGODB_DATABASE` defaults to `openai_status_bot`. Keep validation minimal; the driver validates the URI on connect/ping.
+
+## Related Code Files
+
+- Modify: `internal/config/config.go` — swap Redis fields/parsing for Mongo fields; keep `getEnv` default pattern.
+- Modify: `internal/config/config_test.go` — replace Redis URL cases with Mongo URI/DB cases.
+- Modify: `cmd/openai-status-bot/main.go` — replace `redis.NewClient`+`Ping` (`main.go:37-42`) with `mongo.Connect(options.Client().ApplyURI(cfg.MongoURI))`, `client.Ping`, `defer client.Disconnect(ctx)`; call `store.EnsureIndexes(ctx)`; `store := mongostore.New(client, cfg.MongoDatabase)`. Update the connect-error log fields (drop redis-specific `Network/Addr/DB/TLS`).
+- Modify: `.env.example` — `MONGODB_URI=mongodb+srv://<user>:<pass>@<cluster>/` (placeholder), `MONGODB_DATABASE=openai_status_bot`; remove `REDIS_URL`.
+- Modify: `docker-compose.yml` — **remove the `redis` service and `redis-data` volume entirely** (no local DB). Becomes bot-only, connecting to Atlas via `.env`; this is the **development** path, so set `MONGODB_DATABASE` to the dev database (e.g. `openai_status_bot_dev`). No `depends_on`.
+- Modify: `docker-compose.bot.yml` — bot-only, connects to Atlas via `.env` with the **production** `MONGODB_DATABASE` (`openai_status_bot`). With no local DB, this and `docker-compose.yml` differ only by database name; keep both for the dev/prod split. Optionally collapse to one file — but keeping both matches the existing two-file convention (YAGNI: don't restructure beyond the DB-name change).
+- Modify: `README.md` — Configuration table (`MONGODB_URI`, `MONGODB_DATABASE` rows; drop `REDIS_URL` and the percent-encoding note, or rewrite the note for Atlas SRV URIs), feature bullet "Uses Redis for…" → MongoDB, Compose/Quick-Start description (Atlas, no local DB; dev vs prod database), intro line. Note that no local datastore runs in Compose — an Atlas URI is required to start.
+
+## Implementation Steps
+
+1. Edit `config.go` + `config_test.go`; `go test ./internal/config/`.
+2. Edit `main.go` for Mongo client lifecycle + `EnsureIndexes`. (Will not fully build until Phase 5 swaps `redisstore`→`mongostore` in poller/bot — acceptable; Phases 4-5 land together.)
+3. Update `.env.example`, both compose files, README.
+
+## Success Criteria
+
+- [ ] `config` package + tests pass with Mongo env vars; no Redis symbols remain in config.
+- [ ] `main.go` opens/pings Mongo, ensures indexes, builds `mongostore`.
+- [ ] Compose, `.env.example`, README reference only MongoDB.
+
+## Risk Assessment
+
+- Risk: managed URIs carry credentials/`+srv`. Mitigation: `ApplyURI` handles `mongodb+srv://`; never log the URI (log db name only); keep `.env` out of git (already in `.gitignore`).
+- Risk: dropping `REDIS_URL` breaks existing deploys silently. Mitigation: README "Notes" + this plan flag the env rename; no compatibility shim (clean cutover, intended).
@@ -0,0 +1,69 @@
+---
+phase: 5
+title: "Cutover & Tests"
+status: complete
+effort: "M"
+---
+
+# Phase 5: Cutover & Tests
+
+## Overview
+
+Swap all consumers from `redisstore` to `mongostore`, delete `redisstore`, purge the Redis dependencies, and re-establish the test suite on a MongoDB-backed harness (replacing `miniredis`). After this phase the project builds and tests green with zero Redis.
+
+## Requirements
+
+- All `redisstore.X` references → `mongostore.X` (type names identical; only the qualifier changes).
+- `internal/redisstore` deleted; `go-redis` and `miniredis` removed from go.mod/go.sum.
+- Tests pass against a real `mongod` test harness.
+
+## Architecture: test backend
+
+<!-- Updated: Validation Session 1 - testcontainers chosen but gated behind build tag; not run this phase; poller/bot use in-test fake -->
+
+`miniredis` (pure-Go, in-memory, no binary) has **no MongoDB equivalent** — real-backend tests must run a real `mongod`.
+
+**Decision (validated): `testcontainers-go/modules/mongodb`, but gated and deferred.** The `mongostore` integration suite is written behind a build tag (`//go:build integration`) so it is **NOT part of default `go test ./...`** in this phase. Default test runs must stay Docker-free. The user runs `go test -tags=integration ./internal/mongostore/...` later, when Docker is available.
+
+- `internal/mongostore/store_test.go` → tag `//go:build integration`; a `testMongo(t)` helper starts a `mongo:7` container once, returns a `*mongostore.Store` against a unique per-test database, and `t.Cleanup` drops it.
+- **Poller/bot tests use an in-test fake `Store`** (hand-written, satisfies the interface) — fast, Docker-free, runs in default `go test`. No real DB in those suites.
+- So in this phase: `go test ./...` (no tag) passes with zero Docker — poller/bot/config/etc. on fakes, `mongostore` integration tests skipped by the build tag. CI stays green without Docker; real-backend validation is a deliberate manual/later step.
+
+## Related Code Files
+
+- Modify (qualifier swap `redisstore.` → `mongostore.`, update imports):
+  - `internal/poller/poller.go`, `internal/poller/event_collection.go`, `internal/poller/delivery.go`
+  - `internal/bot/bot.go`, `internal/bot/commands.go`, `internal/bot/helpers.go`, `internal/bot/subscription_format.go`
+  - `internal/telegram/client.go` (`Subscriber` param at `client.go:108`)
+- Create: `internal/mongostore/store_test.go` — `//go:build integration` tag; port the 243-line `redisstore/store_test.go` to the testcontainers harness (same assertions: subscriber CRUD, settings normalization/self-heal, delivery dedup + TTL-index presence, incident version dedup, offset, initialized). Excluded from default `go test`.
+- Modify: `internal/poller/poller_test.go`, `internal/bot/bot_test.go` — swap `redisstore` import; replace any `miniredis` usage with a lightweight **in-test fake** of the `Store` interface (Docker-free, fast). Do not point these at the real harness.
+- Create (if not already present in those tests): a shared fake `Store` (e.g. an in-memory map-backed type in a test helper) satisfying both `poller.Store` and `bot.Store`.
+- Delete: `internal/redisstore/` (all 6 files).
+- Modify: `go.mod`/`go.sum` — remove `github.com/redis/go-redis/v9`, `github.com/alicebob/miniredis/v2` (+ transitive `gopher-lua`, `go-rendezvous`, `xxhash` if now unused); add `go.mongodb.org/mongo-driver/v2` and the chosen test dep. Run `go mod tidy`.
+
+## Implementation Steps
+
+1. Add compile-time interface assertions in `mongostore` (`var _ poller.Store`, `var _ bot.Store`) — now imports resolve both ways; fix any signature drift from Phase 3.
+2. Swap qualifiers across poller/bot/telegram (grep `redisstore\.` → confirm each maps to an identical `mongostore` symbol).
+3. `rm -rf internal/redisstore`; `go build ./...` and fix remaining references.
+4. Build the in-test fake `Store`; swap poller/bot tests onto it. Port `store_test.go` to the testcontainers harness under `//go:build integration`.
+5. `go mod tidy`; confirm Redis deps gone (`grep redis go.mod` empty).
+6. `go test ./...` (no tag) — must pass **without Docker** (poller/bot on fakes, integration suite excluded). `go vet ./...`. Optionally `go build -tags=integration ./...` to confirm the gated suite compiles.
+
+## Success Criteria
+
+- [ ] `go build ./...` clean; no `redisstore` references; `internal/redisstore` deleted.
+- [ ] `grep -ri redis` finds no code/config/doc references (outside this plan).
+- [ ] `go test ./...` (no tag) green **without Docker**; gated `mongostore` suite compiles under `-tags=integration` (run later by the user).
+- [ ] `go mod tidy` removed `go-redis` + `miniredis`; added mongo driver + testcontainers (test-only).
+
+## Risk Assessment
+
+- Risk: CI lacks Docker for testcontainers. Resolved by decision: integration suite is behind `//go:build integration` and excluded from default `go test`; user runs it manually later. Document the `-tags=integration` + Docker requirement in README.
+- Risk: in-test fake `Store` drifts from real `mongostore` semantics (the fake passes but Mongo behaves differently). Mitigation: the gated integration suite is the real-behavior backstop; user must run it before trusting the cutover in production.
+- Risk: TTL behavior not directly assertable (sweep ~60s). Mitigation: assert the TTL **index exists** with `ExpireAfterSeconds==604800` rather than waiting for expiry; trust MongoDB to enforce.
+- Risk: hidden semantic drift between fake `Store` and real `mongostore` in poller/bot tests. Mitigation: keep at least the `mongostore` suite exercising real behavior end-to-end for the store contract.
+
+## Post-cutover docs
+
+Update the three docs that reference Redis: `docs/system-architecture.md`, `docs/setup-guide.md`, `docs/component-id-monitoring-report.md` (verify each via `grep -li redis docs/`). Add a README note that switching from a prior Redis deploy starts from empty state (no migration; subscribers re-`/start`).
@@ -0,0 +1,73 @@
+---
+title: "Migrate datastore from Redis to MongoDB"
+description: ""
+status: complete
+priority: P2
+branch: "main"
+tags: []
+blockedBy: []
+blocks: []
+created: "2026-06-26T04:22:22.185Z"
+createdBy: "ck:plan"
+source: skill
+---
+
+# Migrate datastore from Redis to MongoDB
+
+## Overview
+
+Replace Redis with MongoDB as the bot's datastore. No data migration: cutover is a clean reseed (first poll re-seeds state, subscribers re-issue `/start`). Motivation: team already operates MongoDB; goal is removing the Redis dependency to consolidate on one datastore. Hosting (validated): **managed Atlas for both environments** — one cluster with two databases (production + development) selected via `MONGODB_DATABASE`. **No local MongoDB service**; both compose files connect to Atlas, differing only by database name.
+
+**Verdict (Phase 1, full reasoning there):** Suitable and justified. Every Redis op maps cleanly to MongoDB, and the document model actually *simplifies* several multi-key sequences. One real regression to accept: unit tests lose the pure-Go in-memory `miniredis`; MongoDB has no equivalent, so tests need a real `mongod` (testcontainers needs Docker, or `memongo` downloads a binary). CI gets slower and gains a Docker/binary dependency.
+
+## Approach (straight replace, no dual backend)
+
+`poller.Store` and `bot.Store` are already interfaces, and the only cross-package coupling is the domain types `redisstore.Subscriber`, `redisstore.PendingComponentEvent`, the `SubscriptionType*` constants, `NewSubscriber`, and `DefaultSubscriptionTypes` (~90 references, type *names* not bodies). Plan: create `internal/mongostore` exporting the **same type/constant names**, move the storage-agnostic domain logic verbatim, reimplement only the client-touching methods against MongoDB, swap consumer qualifiers `redisstore.` → `mongostore.`, then delete `internal/redisstore`. YAGNI: no pluggable-backend abstraction since only one backend is wanted.
+
+## Phases
+
+| Phase | Name | Status |
+|-------|------|--------|
+| 1 | [Suitability & Decision](./phase-01-suitability-decision.md) | Done |
+| 2 | [Store Package & Connection](./phase-02-store-package-connection.md) | Done |
+| 3 | [Implement Store Methods](./phase-03-implement-store-methods.md) | Done |
+| 4 | [Config Wiring & Deployment](./phase-04-config-wiring-deployment.md) | Done |
+| 5 | [Cutover & Tests](./phase-05-cutover-tests.md) | Done |
+
+## Acceptance Criteria
+
+- [x] Bot builds and runs with no `go-redis` / `miniredis` dependency.
+- [x] All store operations (subscribers, settings, component statuses, pending component events, incident-update versions, delivery dedup w/ 7-day expiry, initialized flag, telegram offset) work against MongoDB.
+- [x] `poller.Store` and `bot.Store` interfaces satisfied by `mongostore`; existing poller/bot/telegram tests pass against the new backend.
+- [x] Config, `.env.example`, compose files, and README reference `MONGODB_URI`/`MONGODB_DATABASE`; no Redis references remain.
+- [x] TTL index on delivery collection enforces 7-day expiry; conditional "update-only-if-subscribed" preserved via `MatchedCount`.
+
+## Dependencies
+
+None (no cross-plan dependencies; no in-repo data migration).
+
+## Validation Log
+
+### Session 1 — 2026-06-26
+
+**Verification Results**
+- Claims checked: 7 anchors + driver facts (Full tier, 5 phases)
+- Verified: 7 | Failed: 0 | Unverified: 0
+- Evidence: `poller.go:17` & `bot.go:25` (Store interfaces), `subscriber_settings.go:16` (Lua script), `checkpoint.go:137` (`Expire` 7d), `telegram/client.go:108` (`redisstore.Subscriber` param), 92 `redisstore.` refs across `internal`+`cmd`, `.env` gitignored. Driver = `go.mongodb.org/mongo-driver/v2` (v2.7.0).
+
+**Decisions confirmed**
+1. **Test backend** → testcontainers-go chosen, but **gated/deferred**: integration suite behind a build tag (`//go:build integration`), NOT run in Phase 5. Default `go test ./...` must stay Docker-free; user runs the integration suite later. (Phase 5)
+2. **Hosting** → Atlas for both envs; **one cluster, two databases** (prod + dev) selected by `MONGODB_DATABASE`. **No local `mongo` service** in any compose file. (Phase 4)
+3. **Cutover** → clean break: remove `REDIS_URL`, no compat shim, state resets (subscribers re-`/start`, checkpoints reseed). (Phase 4/5)
+4. **Poller/bot tests** → in-test fake `Store` (Docker-free); real-backend coverage stays in the gated `mongostore` suite. (Phase 5)
+
+### Whole-Plan Consistency Sweep
+- Re-read `plan.md` + all 5 phase files after propagation. Local-`mongo`-service references removed (Overview, Phase 4); test-gating note added (Phase 5). No stale "local mongo" / "docker-compose mongo service" terms remain. Verdict (Phase 1) unaffected by these deployment/test decisions. **0 unresolved contradictions.**
+
+### Implementation — 2026-06-26 (all phases complete)
+- New `internal/mongostore` (store/subscriber/subscriber_normalization/checkpoint/indexes) on driver `go.mongodb.org/mongo-driver/v2 v2.7.0`; `internal/redisstore` deleted; `go-redis`+`miniredis` removed via `go mod tidy`.
+- Consumers (`poller`, `bot`, `telegram`) swapped by qualifier only (`redisstore.`→`mongostore.`); identical exported names. Interface conformance enforced at compile time via `main.go` wiring (no `var _` assertion — would cycle).
+- `config` now requires `MONGODB_URI`, defaults `MONGODB_DATABASE=openai_status_bot`; `main.go` connects/pings/`EnsureIndexes`. `.env.example`, both compose files (bot-only, Atlas, dev/prod by DB name), README, and 3 docs updated; no Redis refs remain.
+- Tests: poller/bot/config on Docker-free fakes; `mongostore` has pure-logic unit tests (default) + gated `//go:build integration` testcontainers suite (run via `go test -tags=integration ./internal/mongostore/...`). `go build`/`go test`/`go vet ./...` all green without Docker.
+- `code-reviewer`: DONE, 0 Critical/High/Medium; one cosmetic note (subscriber `threadID` null-vs-omit) applied.
+- Deferred: user runs the gated integration suite with Docker before trusting the cutover in production.