# GoodGo Platform — Production Runbook

> **Audience:** On-call SRE, DevOps engineers, and platform operators.
> **Last updated:** 2026-04-11

---

## Table of Contents

1. [Service Inventory](#1-service-inventory)
2. [Health Checks](#2-health-checks)
3. [Common Incidents](#3-common-incidents)
   - [3.1 Database Connection Pool Exhaustion](#31-database-connection-pool-exhaustion)
   - [3.2 Redis Connection Failure](#32-redis-connection-failure)
   - [3.3 Typesense Unavailable](#33-typesense-unavailable)
   - [3.4 High API Latency](#34-high-api-latency)
   - [3.5 Payment Callback Failures](#35-payment-callback-failures)
   - [3.6 Disk Space Alerts](#36-disk-space-alerts)
   - [3.7 MinIO / Object Storage Failure](#37-minio--object-storage-failure)
   - [3.8 AI Services Unavailable](#38-ai-services-unavailable)
   - [3.9 Log Pipeline Failure (Loki/Promtail)](#39-log-pipeline-failure-lokipromtail)
   - [3.10 5xx Error Rate Spike](#310-5xx-error-rate-spike)
4. [Recovery Procedures](#4-recovery-procedures)
   - [4.1 Database Restore from Backup](#41-database-restore-from-backup)
   - [4.2 Redis Cache Flush & Warm-up](#42-redis-cache-flush--warm-up)
   - [4.3 Rolling Restart Procedures](#43-rolling-restart-procedures)
   - [4.4 Rollback Deployment](#44-rollback-deployment)
   - [4.5 Typesense Reindex from PostgreSQL](#45-typesense-reindex-from-postgresql)
   - [4.6 Full Host Recovery](#46-full-host-recovery)
5. [Escalation Matrix](#5-escalation-matrix)
6. [Monitoring Dashboards](#6-monitoring-dashboards)
7. [Useful PromQL Queries](#7-useful-promql-queries)
8. [Environment Quick Reference](#8-environment-quick-reference)

---

## 1. Service Inventory

### Production Services (`docker-compose.prod.yml`)

| Service | Image | Port | Resource Limits | Health Check |
|---------|-------|------|-----------------|--------------|
| **api** (NestJS) | `ghcr.io/goodgo/goodgo-api` | 3001 | 1 CPU / 1 GB | `GET /health` (node fetch) |
| **web** (Next.js) | `ghcr.io/goodgo/goodgo-web` | 3000 | 0.5 CPU / 512 MB | `GET /` (node fetch) |
| **ai-services** (FastAPI) | `ghcr.io/goodgo/goodgo-ai-services` | 8000 | 1 CPU / 1 GB | `GET /health` (httpx) |
| **postgres** | `postgis/postgis:16-3.4` | 5432 (internal) | 2 CPU / 2 GB, shm=256m | `pg_isready` |
| **pgbouncer** | `edoburu/pgbouncer:1.23.1-p2` | 6432 (internal) | 0.5 CPU / 256 MB | `pg_isready -p 6432` |
| **redis** | `redis:7-alpine` | 6379 (internal) | 0.5 CPU / 768 MB | `redis-cli ping` |
| **typesense** | `typesense/typesense:27.1` | 8108 (internal) | 1 CPU / 1 GB | `curl /health` |
| **minio** | `minio/minio:latest` | 9000/9001 (internal) | 0.5 CPU / 1 GB | `mc ready local` |
| **pg-backup** | `postgis/postgis:16-3.4` | — | 0.5 CPU / 512 MB | — (cron daemon) |
| **loki** | `grafana/loki:3.0.0` | 3100 (internal) | 0.5 CPU / 512 MB | `wget /ready` |
| **promtail** | `grafana/promtail:3.0.0` | — | 0.25 CPU / 256 MB | — |
| **prometheus** | `prom/prometheus:v2.51.0` | 9090 (internal) | 0.5 CPU / 1 GB | `wget /-/healthy` |
| **grafana** | `grafana/grafana:10.4.1` | 3002 (external) | 0.5 CPU / 512 MB | `wget /api/health` |

### Development-Only Services (`docker-compose.yml`)

Development uses the same data and monitoring services but runs API/Web on the host. The `pg-backup` service also runs in dev with default credentials.

### Service Dependency Chain

```
web --> api --> pgbouncer --> postgres
                  |-> redis
                  |-> typesense
                  |-> minio
                  |-> ai-services

grafana --> prometheus
        |-> loki --> promtail (Docker socket)

pg-backup --> postgres
```

---

## 2. Health Checks

### Application Health Endpoints

| Endpoint | Type | Checks | Expected Response |
|----------|------|--------|-------------------|
| `GET /health` | Liveness | Process is running | `200 { status: "ok" }` |
| `GET /health/ready` | Readiness | PostgreSQL + Redis | `200 { status: "ok", info: { database: ..., redis: ... } }` |
| `GET /health/db` | Database only | PostgreSQL connectivity | `200 { status: "ok", info: { database: ... } }` |
| `GET /health/redis` | Redis only | Redis connectivity | `200 { status: "ok", info: { redis: ... } }` |

### Verify All Services Are Healthy

```bash
# Quick check — all containers
docker compose -f docker-compose.prod.yml ps --format "table {{.Name}}\t{{.Status}}\t{{.Health}}"

# API liveness
curl -sf http://localhost:3001/health && echo "API OK" || echo "API FAIL"

# API readiness (DB + Redis)
curl -sf http://localhost:3001/health/ready | jq .

# Individual dependency checks
curl -sf http://localhost:3001/health/db | jq .
curl -sf http://localhost:3001/health/redis | jq .

# Typesense
curl -sf -H "X-TYPESENSE-API-KEY: ${TYPESENSE_API_KEY}" http://localhost:8108/health

# MinIO
docker exec goodgo-minio mc ready local && echo "MinIO OK"

# AI Services
curl -sf http://localhost:8000/health && echo "AI OK" || echo "AI FAIL"

# PostgreSQL (direct)
docker exec goodgo-postgres pg_isready -U ${DB_USER} -d ${DB_NAME}

# PgBouncer
docker exec goodgo-pgbouncer pg_isready -h 127.0.0.1 -p 6432 -U ${DB_USER}

# Redis
docker exec goodgo-redis redis-cli -a "${REDIS_PASSWORD}" ping

# Prometheus
curl -sf http://localhost:9090/-/healthy && echo "Prometheus OK"

# Loki
curl -sf http://localhost:3100/ready && echo "Loki OK"

# Grafana
curl -sf http://localhost:3002/api/health | jq .
```

### Container Resource Usage

```bash
docker stats --no-stream --format "table {{.Name}}\t{{.CPUPerc}}\t{{.MemUsage}}\t{{.MemPerc}}\t{{.NetIO}}"
```

---

## 3. Common Incidents

### 3.1 Database Connection Pool Exhaustion

**Symptoms:**
- API returns 503 or hangs on requests
- `/health/ready` returns unhealthy for `database`
- PgBouncer logs: `no more connections allowed` or `query_wait_timeout`
- Prometheus: spike in `pg_stat_activity` active connections

**Diagnosis:**

```bash
# Check PgBouncer pool status
docker exec goodgo-pgbouncer psql -h 127.0.0.1 -p 6432 -U pgbouncer_admin pgbouncer -c "SHOW POOLS;"
docker exec goodgo-pgbouncer psql -h 127.0.0.1 -p 6432 -U pgbouncer_admin pgbouncer -c "SHOW CLIENTS;"
docker exec goodgo-pgbouncer psql -h 127.0.0.1 -p 6432 -U pgbouncer_admin pgbouncer -c "SHOW STATS;"

# Check PostgreSQL active connections
docker exec goodgo-postgres psql -U ${DB_USER} -d ${DB_NAME} -c \
  "SELECT state, count(*) FROM pg_stat_activity WHERE datname = '${DB_NAME}' GROUP BY state;"

# Identify long-running queries
docker exec goodgo-postgres psql -U ${DB_USER} -d ${DB_NAME} -c \
  "SELECT pid, now() - pg_stat_activity.query_start AS duration, query, state
   FROM pg_stat_activity
   WHERE datname = '${DB_NAME}' AND state != 'idle'
   ORDER BY duration DESC
   LIMIT 10;"
```

**Resolution:**

```bash
# 1. Kill long-running queries (> 5 minutes)
docker exec goodgo-postgres psql -U ${DB_USER} -d ${DB_NAME} -c \
  "SELECT pg_terminate_backend(pid)
   FROM pg_stat_activity
   WHERE datname = '${DB_NAME}'
     AND state != 'idle'
     AND now() - query_start > interval '5 minutes'
     AND pid <> pg_backend_pid();"

# 2. If pool is fully exhausted, restart PgBouncer
docker compose -f docker-compose.prod.yml restart pgbouncer

# 3. If issue persists, increase pool size temporarily
#    Edit PGBOUNCER_POOL_SIZE in .env, then:
docker compose -f docker-compose.prod.yml up -d --no-deps pgbouncer
```

**PgBouncer Configuration Reference:**
- Pool mode: `transaction` (connections returned to pool after each transaction)
- Default pool size: 20 server connections per user/db pair
- Max client connections: 200
- Reserve pool: 5 extra connections (after 3s wait)
- Query wait timeout: 120s (error if client waits this long)

### 3.2 Redis Connection Failure

**Symptoms:**
- `/health/redis` returns unhealthy
- Increased API response times (cache misses hitting DB)
- API logs show Redis connection errors

**Diagnosis:**

```bash
# Check Redis container
docker logs --tail=50 goodgo-redis

# Test connectivity
docker exec goodgo-redis redis-cli -a "${REDIS_PASSWORD}" ping
docker exec goodgo-redis redis-cli -a "${REDIS_PASSWORD}" INFO server
docker exec goodgo-redis redis-cli -a "${REDIS_PASSWORD}" INFO memory
docker exec goodgo-redis redis-cli -a "${REDIS_PASSWORD}" INFO clients
```

**Resolution:**

```bash
# 1. Restart Redis (data persisted via AOF)
docker compose -f docker-compose.prod.yml restart redis

# 2. If OOM — check memory usage
docker exec goodgo-redis redis-cli -a "${REDIS_PASSWORD}" INFO memory | grep used_memory_human
# Max memory is 512 MB (prod), eviction policy: allkeys-lru

# 3. If AOF is corrupted
docker compose -f docker-compose.prod.yml stop redis
docker exec goodgo-redis redis-check-aof --fix /data/appendonly.aof
docker compose -f docker-compose.prod.yml start redis
```

**Graceful Degradation:** The API is designed to continue operating when Redis is unavailable. Cache misses fall through to PostgreSQL. Performance will degrade but functionality is preserved. Redis is non-critical for core operations.

### 3.3 Typesense Unavailable

**Symptoms:**
- Search functionality returns errors or falls back to basic DB search
- `curl http://localhost:8108/health` fails
- API logs show Typesense connection timeouts

**Diagnosis:**

```bash
# Check container status
docker logs --tail=50 goodgo-typesense

# Check health
curl -sf -H "X-TYPESENSE-API-KEY: ${TYPESENSE_API_KEY}" http://localhost:8108/health

# Check collections
curl -sf -H "X-TYPESENSE-API-KEY: ${TYPESENSE_API_KEY}" http://localhost:8108/collections | jq .

# Check disk space for Typesense data volume
docker system df -v | grep typesense
```

**Resolution:**

```bash
# 1. Restart Typesense
docker compose -f docker-compose.prod.yml restart typesense

# 2. If data is corrupted — rebuild from PostgreSQL
docker compose -f docker-compose.prod.yml stop typesense
docker volume rm goodgo-platform-ai_typesense_data
docker compose -f docker-compose.prod.yml up -d typesense
# Wait for healthy, then reindex:
docker compose -f docker-compose.prod.yml exec api npx ts-node scripts/typesense-reindex.ts
# Or: pnpm run typesense:reindex

# 3. If volume backup exists — restore
docker compose -f docker-compose.prod.yml stop typesense
docker run --rm -v goodgo-platform-ai_typesense_data:/data -v $(pwd)/backups:/backup \
  alpine sh -c "rm -rf /data/* && tar xzf /backup/typesense_YYYYMMDD_HHMMSS.tar.gz -C /data"
docker compose -f docker-compose.prod.yml start typesense
```

**Fallback Behavior:** When Typesense is unavailable, property search falls back to PostgreSQL full-text search with PostGIS geo queries. Search quality degrades but core functionality works.

### 3.4 High API Latency

**Symptoms:**
- Prometheus alert `ApiLatencyP99High` fires (p99 > 1s for 5 min)
- Critical alert `ApiLatencyP99Critical` fires (p99 > 3s for 3 min — SLO breach)
- Users report slow page loads

**Diagnosis:**

```bash
# 1. Check which endpoints are slow
# Grafana: GoodGo API Latency dashboard
# Or via PromQL:
curl -s "http://localhost:9090/api/v1/query" --data-urlencode \
  'query=topk(10, histogram_quantile(0.99, sum(rate(goodgo_api_request_duration_seconds_bucket[5m])) by (le, route, method)))' \
  | jq '.data.result[] | {route: .metric.route, method: .metric.method, p99: .value[1]}'

# 2. Check database slow queries
docker exec goodgo-postgres psql -U ${DB_USER} -d ${DB_NAME} -c \
  "SELECT pid, now() - query_start AS duration, left(query, 100) AS query_preview
   FROM pg_stat_activity
   WHERE state = 'active' AND now() - query_start > interval '1 second'
   ORDER BY duration DESC;"

# 3. Check PgBouncer wait times
docker exec goodgo-pgbouncer psql -h 127.0.0.1 -p 6432 -U pgbouncer_admin pgbouncer -c "SHOW POOLS;"

# 4. Check container resource usage
docker stats --no-stream goodgo-api goodgo-postgres goodgo-redis goodgo-pgbouncer

# 5. Check Redis latency
docker exec goodgo-redis redis-cli -a "${REDIS_PASSWORD}" --latency-history -i 3

# 6. Check application logs for errors
docker logs --tail=200 --since=5m goodgo-api 2>&1 | grep -i "error\|timeout\|slow"
```

**Resolution:**

```bash
# 1. If DB slow queries — terminate them
docker exec goodgo-postgres psql -U ${DB_USER} -d ${DB_NAME} -c \
  "SELECT pg_terminate_backend(pid)
   FROM pg_stat_activity
   WHERE state = 'active' AND now() - query_start > interval '30 seconds';"

# 2. If connection pool exhaustion — see Section 3.1

# 3. If Redis is slow — restart
docker compose -f docker-compose.prod.yml restart redis

# 4. If API container OOM — restart with more memory
docker compose -f docker-compose.prod.yml restart api

# 5. If specific endpoint is the bottleneck — check Loki logs:
# Grafana > Explore > Loki > {container_name="goodgo-api"} |= "slow"
```

### 3.5 Payment Callback Failures

**Symptoms:**
- Users report payments stuck in "pending" state
- VNPay/MoMo/ZaloPay IPN callbacks returning errors
- Payment reconciliation mismatches

**Diagnosis:**

```bash
# 1. Check payment callback logs
docker logs goodgo-api 2>&1 | grep -i "payment\|callback\|vnpay\|momo\|zalopay" | tail -50

# 2. Check for pending payments in DB
docker exec goodgo-postgres psql -U ${DB_USER} -d ${DB_NAME} -c \
  "SELECT id, provider, status, \"amountVND\", \"createdAt\"
   FROM \"Payment\"
   WHERE status = 'PENDING'
   AND \"createdAt\" > now() - interval '24 hours'
   ORDER BY \"createdAt\" DESC
   LIMIT 20;"

# 3. Verify callback URL is reachable from external networks
curl -sf https://your-domain.com/api/payments/vnpay/callback && echo "Callback URL reachable"

# 4. Check if API is receiving callbacks (via Loki)
# Grafana > Explore > Loki > {container_name="goodgo-api"} |= "callback" |= "payment"
```

**Resolution:**

```bash
# 1. If callbacks are timing out — check API health and restart if needed
docker compose -f docker-compose.prod.yml restart api

# 2. If VNPay signature verification fails — verify VNPAY_* env vars
docker compose -f docker-compose.prod.yml exec api printenv | grep VNPAY

# 3. For stuck payments — manual reconciliation
#    Check VNPay/MoMo merchant portal for actual transaction status
#    Update payment status in DB if confirmed paid:
docker exec goodgo-postgres psql -U ${DB_USER} -d ${DB_NAME} -c \
  "UPDATE \"Payment\" SET status = 'COMPLETED', \"updatedAt\" = now()
   WHERE id = '<payment-id>' AND status = 'PENDING';"

# 4. If callbacks are not reaching the server — check:
#    - Firewall rules (port 3001 or reverse proxy port must be open)
#    - SSL certificate validity
#    - DNS resolution
#    - Payment provider webhook configuration (correct callback URL)
```

**Important:** The payment callback handler uses idempotent processing with atomic state transitions. Replaying a callback is safe and will not duplicate payments.

### 3.6 Disk Space Alerts

**Symptoms:**
- Containers failing to start or crashing
- PostgreSQL refusing writes (`PANIC: could not write to file`)
- Docker daemon running out of space

**Diagnosis:**

```bash
# Host disk usage
df -h

# Docker disk usage
docker system df
docker system df -v

# Check individual volume sizes
for vol in $(docker volume ls -q | grep goodgo); do
  echo -n "$vol: "
  docker run --rm -v "${vol}:/data" alpine du -sh /data 2>/dev/null
done

# Check backup volume specifically
docker exec goodgo-pg-backup du -sh /backups/
docker exec goodgo-pg-backup ls -lht /backups/
```

**Resolution:**

```bash
# 1. Clean up Docker artifacts
docker system prune -f          # Remove stopped containers, unused networks, dangling images
docker image prune -a -f        # Remove ALL unused images (careful in prod)

# 2. Clean old backups (if retention not working)
docker exec goodgo-pg-backup find /backups -name "goodgo_*.sql.gz" -mtime +7 -delete

# 3. Clean Prometheus data (if too large)
# Prometheus retention is 30d (prod) / 15d (dev) — configured via --storage.tsdb.retention.time
# To force compaction:
curl -sf -XPOST http://localhost:9090/-/quit  # Graceful shutdown triggers compaction
docker compose -f docker-compose.prod.yml start prometheus

# 4. Clean Loki data (15-day retention)
# Loki handles its own cleanup via compactor. If urgent:
docker compose -f docker-compose.prod.yml restart loki

# 5. Truncate Docker container logs
sudo truncate -s 0 $(docker inspect --format='{{.LogPath}}' goodgo-api)
# Or for all containers:
sudo sh -c 'truncate -s 0 /var/lib/docker/containers/*/*-json.log'
```

**Prevention:** All production containers use `json-file` logging with `max-size: 10m` and `max-file: 3-5`. Backup retention is 7 days (configurable via `BACKUP_RETENTION_DAYS`).

### 3.7 MinIO / Object Storage Failure

**Symptoms:**
- Image/file uploads fail
- Property photos not loading
- MinIO console inaccessible at port 9001

**Diagnosis:**

```bash
docker logs --tail=50 goodgo-minio
docker exec goodgo-minio mc ready local
docker exec goodgo-minio mc admin info local
```

**Resolution:**

```bash
# 1. Restart MinIO
docker compose -f docker-compose.prod.yml restart minio

# 2. If data volume corrupted
docker compose -f docker-compose.prod.yml stop minio
docker volume rm goodgo-platform-ai_minio_data  # WARNING: data loss
docker compose -f docker-compose.prod.yml up -d minio
# Recreate buckets via API or admin console
```

### 3.8 AI Services Unavailable

**Symptoms:**
- AI-powered features (AVM, property descriptions) fail
- `GET /health` on port 8000 fails
- API logs show AI service connection timeouts

**Diagnosis:**

```bash
docker logs --tail=50 goodgo-ai-services
curl -sf http://localhost:8000/health
docker stats --no-stream goodgo-ai-services
```

**Resolution:**

```bash
# 1. Restart AI services
docker compose -f docker-compose.prod.yml restart ai-services

# 2. Check rate limits (default: 60/minute)
docker compose -f docker-compose.prod.yml exec ai-services printenv | grep AI_RATE_LIMIT

# 3. If OOM — the service has 1 GB limit; may need to increase for large models
```

**Graceful Degradation:** AI features are optional. The API should handle AI service unavailability gracefully and return non-AI results.

### 3.9 Log Pipeline Failure (Loki/Promtail)

**Symptoms:**
- Grafana log explorer returns empty results
- Promtail container unhealthy or crash-looping
- Loki returning 503

**Diagnosis:**

```bash
docker logs --tail=50 goodgo-loki
docker logs --tail=50 goodgo-promtail
curl -sf http://localhost:3100/ready && echo "Loki ready" || echo "Loki NOT ready"
```

**Resolution:**

```bash
# 1. Restart the pipeline
docker compose -f docker-compose.prod.yml restart loki promtail

# 2. If Loki data corrupted
docker compose -f docker-compose.prod.yml stop loki promtail
docker volume rm goodgo-platform-ai_loki_data
docker compose -f docker-compose.prod.yml up -d loki promtail
# Historical logs are lost but new logs will flow immediately

# 3. If Promtail can't access Docker socket
ls -la /var/run/docker.sock
# Ensure the promtail container has the Docker socket mounted
```

### 3.10 5xx Error Rate Spike

**Symptoms:**
- Prometheus alert `ApiErrorRate5xxHigh` fires (> 1% 5xx for 5 min)
- Users reporting errors

**Diagnosis:**

```bash
# Check which endpoints are returning 5xx
curl -s "http://localhost:9090/api/v1/query" --data-urlencode \
  'query=topk(10, sum(rate(http_requests_total{job="goodgo-api", status_code=~"5.."}[5m])) by (route, method))' \
  | jq '.data.result'

# Check API error logs
docker logs --tail=200 --since=5m goodgo-api 2>&1 | grep -i "error\|exception\|500"

# Check all dependency health
curl -sf http://localhost:3001/health/ready | jq .
```

**Resolution:**
1. If DB-related: see [Section 3.1](#31-database-connection-pool-exhaustion)
2. If Redis-related: see [Section 3.2](#32-redis-connection-failure)
3. If recent deployment: see [Section 4.4](#44-rollback-deployment)
4. If unknown: restart API and investigate logs

---

## 4. Recovery Procedures

### 4.1 Database Restore from Backup

**Automated backups run daily at 02:00 UTC** via the `pg-backup` container. Retention: 7 days. Format: `pg_dump --format=custom --compress=6`.

**Automated verification runs daily at 04:00 UTC** — restores to an isolated test database, verifies table existence, row counts, checksums, PostGIS extension, indexes, and enums. Reports are written to `/backups/verify-latest.json`.

#### List Available Backups

```bash
docker exec goodgo-pg-backup ls -lht /backups/goodgo_*.sql.gz
```

#### Create an On-Demand Backup

```bash
docker exec goodgo-pg-backup /scripts/pg-backup.sh
```

#### Full Restore Procedure

```bash
# 1. Stop application services
docker compose -f docker-compose.prod.yml stop api web ai-services

# 2. (Production) Stop PgBouncer to prevent stale connections
docker compose -f docker-compose.prod.yml stop pgbouncer

# 3. Run the restore script
docker exec -it goodgo-pg-backup /scripts/pg-restore.sh /backups/goodgo_YYYYMMDD_HHMMSS.sql.gz
# The script will:
#   - Terminate active DB connections
#   - DROP and recreate the database
#   - Restore from the backup file

# 4. Verify the restore
docker exec goodgo-postgres psql -U ${DB_USER} -d ${DB_NAME} -c '\dt'
docker exec goodgo-postgres psql -U ${DB_USER} -d ${DB_NAME} -c 'SELECT count(*) FROM "User";'

# 5. Apply any pending migrations
docker compose -f docker-compose.prod.yml exec api npx prisma migrate deploy

# 6. Restart all services
docker compose -f docker-compose.prod.yml up -d

# 7. Verify application health
curl -sf http://localhost:3001/health/ready | jq .
```

#### Verify a Backup Without Restoring

```bash
# Run verification against latest backup (creates temp DB, drops it after)
docker compose run --rm pg-verify-backup

# Or verify a specific backup file
docker exec goodgo-pg-backup /scripts/pg-verify-backup.sh /backups/goodgo_YYYYMMDD_HHMMSS.sql.gz

# Check latest verification report
docker exec goodgo-pg-backup cat /backups/verify-latest.json | jq .
```

**RPO/RTO:**
- RPO: ≤ 24 hours (daily backups; consider WAL archiving for lower RPO)
- RTO: ~15 minutes (local volume), ~30 minutes (off-site)

### 4.2 Redis Cache Flush & Warm-up

```bash
# Flush all Redis data
docker exec goodgo-redis redis-cli -a "${REDIS_PASSWORD}" FLUSHALL

# Verify flush
docker exec goodgo-redis redis-cli -a "${REDIS_PASSWORD}" DBSIZE
# Should return: (integer) 0
```

**Warm-up:** Redis uses `allkeys-lru` eviction. Cache warms naturally as users make requests. No manual warm-up script is needed — cache misses fall through to PostgreSQL.

**When to flush:**
- After database restore (stale cache references)
- After data corruption at the application level
- After schema changes that alter cached data structures

### 4.3 Rolling Restart Procedures

#### Single Service Restart (Zero Downtime)

```bash
# API — the --wait flag ensures health check passes before moving on
docker compose -f docker-compose.prod.yml up -d --no-deps --wait api

# Web
docker compose -f docker-compose.prod.yml up -d --no-deps --wait web

# AI Services
docker compose -f docker-compose.prod.yml up -d --no-deps --wait ai-services
```

#### Full Stack Rolling Restart

```bash
# Data services first (order matters for dependency chain)
docker compose -f docker-compose.prod.yml restart redis
docker compose -f docker-compose.prod.yml restart typesense

# Wait for data services to be healthy
sleep 10

# Connection pooling
docker compose -f docker-compose.prod.yml restart pgbouncer
sleep 5

# Application services
docker compose -f docker-compose.prod.yml up -d --no-deps --wait api
docker compose -f docker-compose.prod.yml up -d --no-deps --wait web
docker compose -f docker-compose.prod.yml up -d --no-deps --wait ai-services

# Verify
curl -sf http://localhost:3001/health/ready | jq .
```

#### Emergency: Restart Everything

```bash
docker compose -f docker-compose.prod.yml down
docker compose -f docker-compose.prod.yml up -d --wait
```

### 4.4 Rollback Deployment

The CI/CD pipeline (`.github/workflows/deploy.yml`) supports automatic rollback if production smoke tests fail. For manual rollback:

#### Quick Rollback (Revert to Previous Images)

```bash
# SSH into production host
ssh deploy@$PRODUCTION_HOST

cd ~/goodgo

# Stop current app containers
docker compose -f docker-compose.prod.yml down api web ai-services

# The previous images are still cached locally
# Restart without pulling — uses last-known-good images
docker compose -f docker-compose.prod.yml up -d --wait api web ai-services

# Verify
curl -sf http://localhost:3001/health && echo "Rollback successful"
```

#### Rollback to a Specific Git Commit / Image Tag

```bash
# Set the target tag (git SHA)
export IMAGE_TAG=<previous-commit-sha>
export REGISTRY_URL=ghcr.io/goodgo

# Pull specific version
docker compose -f docker-compose.prod.yml pull api web ai-services

# Deploy
docker compose -f docker-compose.prod.yml up -d --no-deps --wait api
docker compose -f docker-compose.prod.yml up -d --no-deps --wait web
docker compose -f docker-compose.prod.yml up -d --no-deps --wait ai-services

# Verify
curl -sf http://localhost:3001/health/ready | jq .
```

#### Rollback Database Migrations

```bash
# WARNING: Prisma does not support automatic down-migrations.
# For migration rollback, restore from the pre-migration backup:

# 1. Stop application
docker compose -f docker-compose.prod.yml stop api web ai-services pgbouncer

# 2. Restore from backup taken before the migration
docker exec -it goodgo-pg-backup /scripts/pg-restore.sh /backups/<pre-migration-backup>.sql.gz

# 3. Deploy the previous code version (older IMAGE_TAG)
export IMAGE_TAG=<previous-commit-sha>
docker compose -f docker-compose.prod.yml up -d --wait
```

### 4.5 Typesense Reindex from PostgreSQL

If Typesense data is lost or corrupted, rebuild the search index from PostgreSQL:

```bash
# 1. Ensure Typesense is running and healthy
curl -sf -H "X-TYPESENSE-API-KEY: ${TYPESENSE_API_KEY}" http://localhost:8108/health

# 2. Run reindex
docker compose -f docker-compose.prod.yml exec api npx ts-node scripts/typesense-reindex.ts
# Or from host:
pnpm run typesense:reindex

# 3. Verify collections
curl -sf -H "X-TYPESENSE-API-KEY: ${TYPESENSE_API_KEY}" http://localhost:8108/collections | jq '.[].name'
```

### 4.6 Full Host Recovery

For complete host failure or migration to a new server:

```bash
# 1. Provision new host with Docker + Docker Compose
# Requirements: Docker >= 24, Docker Compose v2, 8 GB RAM minimum

# 2. Clone repository and configure
git clone <repo-url> ~/goodgo && cd ~/goodgo
cp .env.example .env
# Edit .env with production secrets (from secrets manager)

# 3. Restore PostgreSQL backup from off-site storage
# Transfer backup file to the new host
scp backups/goodgo_latest.sql.gz deploy@newhost:~/goodgo/backups/

# 4. Start infrastructure services
docker compose -f docker-compose.prod.yml up -d postgres redis typesense minio

# 5. Wait for PostgreSQL to be ready, then restore
docker compose -f docker-compose.prod.yml exec postgres pg_isready
docker exec goodgo-pg-backup /scripts/pg-restore.sh /backups/goodgo_latest.sql.gz

# 6. Start application services
docker compose -f docker-compose.prod.yml up -d

# 7. Run migrations (if backup predates latest code)
docker compose -f docker-compose.prod.yml exec api npx prisma migrate deploy

# 8. Rebuild Typesense index
pnpm run typesense:reindex

# 9. Flush Redis (stale cache from old host)
docker exec goodgo-redis redis-cli -a "${REDIS_PASSWORD}" FLUSHALL

# 10. Verify everything
curl -sf http://localhost:3001/health/ready | jq .
curl -sf http://localhost:3000 > /dev/null && echo "Web OK"

# Expected RTO: ~60 minutes (depends on backup transfer speed)
```

---

## 5. Escalation Matrix

| Severity | Condition | First Responder | Escalation | SLA |
|----------|-----------|-----------------|------------|-----|
| **P0 — Critical** | Full outage, data loss, payment corruption | On-call SRE | CTO + CEO within 15 min | Acknowledge: 5 min, Resolve: 1 hour |
| **P1 — High** | Partial outage, SLO breach (p99 > 3s), 5xx > 5% | On-call SRE | Engineering lead within 30 min | Acknowledge: 15 min, Resolve: 4 hours |
| **P2 — Medium** | Degraded performance, single service down (non-critical), p99 > 1s | On-call SRE | Team lead next business day | Acknowledge: 1 hour, Resolve: 24 hours |
| **P3 — Low** | Cosmetic issues, monitoring gaps, non-urgent improvements | Assigned engineer | Sprint planning | Next sprint |

### Contact Channels

| Role | Channel |
|------|---------|
| On-call SRE | Slack `#sre-oncall` + PagerDuty |
| Engineering Lead | Slack `#engineering` |
| CTO | Slack DM / Phone (see PagerDuty) |
| Payment Issues | Slack `#payments` + VNPay/MoMo support portals |
| Infrastructure | Slack `#infrastructure` |

### Slack Notifications

The deploy pipeline automatically notifies `#deployments` (via `SLACK_WEBHOOK_URL`) on:
- Production deploy success
- Staging smoke test failure
- Production rollback triggered

---

## 6. Monitoring Dashboards

All dashboards are provisioned automatically via `monitoring/grafana/provisioning/` and are available in the **GoodGo** folder in Grafana.

| Dashboard | Grafana Path | Purpose |
|-----------|--------------|---------|
| **API Overview** | `api-overview` | Request rates, status codes, active connections |
| **API Latency** | `api-latency` | p50/p95/p99 latency by endpoint, latency heatmaps |
| **Database** | `database` | PostgreSQL connections, query performance, PgBouncer stats |
| **Search** | `search` | Typesense query rates, latency, index sizes |
| **Business Metrics** | `business-metrics` | Listings, inquiries, payments, user registrations |
| **Web Vitals** | `web-vitals` | Core Web Vitals (LCP, FID, CLS), page load times |
| **Logs** | `logs` | Loki log explorer with filters by service, level, correlation ID |

**Access:** `http://localhost:3002` (default credentials in `.env`: `GRAFANA_ADMIN_USER` / `GRAFANA_ADMIN_PASSWORD`)

**Data Sources:**
- **Prometheus** (`http://prometheus:9090`) — Metrics (default)
- **Loki** (`http://loki:3100`) — Logs, with correlation ID linking to Prometheus

---

## 7. Useful PromQL Queries

### API Performance

```promql
# Overall p99 latency
histogram_quantile(0.99, sum(rate(goodgo_api_request_duration_seconds_bucket{job="goodgo-api"}[5m])) by (le))

# Per-endpoint p99 latency (top 10 slowest)
topk(10, histogram_quantile(0.99, sum(rate(goodgo_api_request_duration_seconds_bucket{job="goodgo-api"}[5m])) by (le, route, method)))

# Request rate by status code
sum(rate(http_requests_total{job="goodgo-api"}[5m])) by (status_code)

# 5xx error percentage
(sum(rate(http_requests_total{job="goodgo-api", status_code=~"5.."}[5m])) / sum(rate(http_requests_total{job="goodgo-api"}[5m]))) * 100
```

### Database

```promql
# Active connections
pg_stat_activity_count{datname="goodgo", state="active"}

# Connection pool utilization (if PgBouncer metrics are scraped)
# Manual check via: SHOW POOLS in PgBouncer admin console
```

### Infrastructure

```promql
# Container memory usage
container_memory_usage_bytes{name=~"goodgo-.*"}

# Container CPU usage
rate(container_cpu_usage_seconds_total{name=~"goodgo-.*"}[5m])
```

---

## 8. Environment Quick Reference

### Key Environment Variables

| Variable | Required | Description |
|----------|----------|-------------|
| `DATABASE_URL` | Yes | PostgreSQL via PgBouncer (`postgresql://user:pass@pgbouncer:6432/db`) |
| `DATABASE_URL_DIRECT` | Yes (prod) | Direct PostgreSQL for migrations (`postgresql://user:pass@postgres:5432/db`) |
| `JWT_SECRET` | Yes | JWT signing secret |
| `JWT_REFRESH_SECRET` | Yes | Refresh token signing secret |
| `REDIS_URL` | Yes | Redis connection (`redis://:password@redis:6379`) |
| `REDIS_PASSWORD` | Yes (prod) | Redis auth password |
| `TYPESENSE_API_KEY` | Yes | Typesense admin API key |
| `MINIO_ACCESS_KEY` | Yes | MinIO root user |
| `MINIO_SECRET_KEY` | Yes | MinIO root password |
| `VNPAY_*` | Yes | VNPay payment gateway configuration |
| `AI_API_KEY` | Yes | AI services authentication |
| `GRAFANA_ADMIN_USER` | Yes (prod) | Grafana admin username |
| `GRAFANA_ADMIN_PASSWORD` | Yes (prod) | Grafana admin password |
| `PGBOUNCER_POOL_SIZE` | No | PgBouncer pool size (default: 20) |
| `PGBOUNCER_MAX_CLIENT_CONN` | No | Max PgBouncer client connections (default: 200) |
| `BACKUP_RETENTION_DAYS` | No | Backup retention period (default: 7) |
| `IMAGE_TAG` | No (prod) | Container image tag (default: `latest`) |

### Port Map

| Port | Service | Exposed |
|------|---------|---------|
| 3000 | Web (Next.js) | External |
| 3001 | API (NestJS) | External |
| 3002 | Grafana | External (admin only) |
| 5432 | PostgreSQL | Internal |
| 6432 | PgBouncer | Internal |
| 6379 | Redis | Internal |
| 8000 | AI Services | Internal |
| 8108 | Typesense | Internal |
| 9000 | MinIO API | Internal |
| 9001 | MinIO Console | Internal |
| 9090 | Prometheus | Internal |
| 3100 | Loki | Internal |

### Docker Volumes

| Volume | Service | Purpose |
|--------|---------|---------|
| `pgdata` | PostgreSQL | Database files |
| `redis_data` | Redis | AOF persistence |
| `typesense_data` | Typesense | Search index data |
| `minio_data` | MinIO | Object storage (images, files) |
| `pg_backups` | pg-backup | Database backup files |
| `loki_data` | Loki | Log storage (15-day retention) |
| `prometheus_data` | Prometheus | Metrics (30-day retention prod / 15-day dev) |
| `grafana_data` | Grafana | Dashboard state, user preferences |

---

## Appendix: Alert Rules Reference

| Alert | Expression | Severity | Duration |
|-------|-----------|----------|----------|
| `ApiLatencyP99High` | p99 > 1s | Warning | 5 min |
| `ApiEndpointLatencyP99High` | Per-route p99 > 2s | Warning | 5 min |
| `ApiLatencyP99Critical` | p99 > 3s (SLO breach) | Critical | 3 min |
| `ApiErrorRate5xxHigh` | 5xx rate > 1% | Warning | 5 min |

Alert rules are defined in `monitoring/prometheus/alert-rules.yml` and evaluated every 15 seconds.