integration test fixes - claude for the win? try 3

.claude/settings.local.json

@@ -56,7 +56,8 @@
       "mcp__memory__delete_entities",
       "mcp__sequential-thinking__sequentialthinking",
       "mcp__filesystem__list_directory",
-      "mcp__filesystem__read_multiple_files"
+      "mcp__filesystem__read_multiple_files",
+      "mcp__filesystem__directory_tree"
     ]
   }
 }

.gitea/workflows/deploy-to-test.yml

@@ -96,6 +96,23 @@ jobs:
           # It prevents the accumulation of duplicate processes from previous test runs.
           node -e "const exec = require('child_process').execSync; try { const list = JSON.parse(exec('pm2 jlist').toString()); list.forEach(p => { if (p.name && p.name.endsWith('-test')) { console.log('Deleting test process: ' + p.name + ' (' + p.pm2_env.pm_id + ')'); try { exec('pm2 delete ' + p.pm2_env.pm_id); } catch(e) { console.error('Failed to delete ' + p.pm2_env.pm_id, e.message); } } }); console.log('✅ Test process cleanup complete.'); } catch (e) { if (e.stdout.toString().includes('No process found')) { console.log('No PM2 processes running, cleanup not needed.'); } else { console.error('Error cleaning up test processes:', e.message); } }" || true
 
+      - name: Flush Redis Before Tests
+        # CRITICAL: Clear all Redis data to remove stale BullMQ jobs from previous test runs.
+        # This prevents old jobs with outdated error messages from polluting test results.
+        env:
+          REDIS_PASSWORD: ${{ secrets.REDIS_PASSWORD_TEST }}
+        run: |
+          echo "--- Flushing Redis database to remove stale jobs ---"
+          if [ -z "$REDIS_PASSWORD" ]; then
+            echo "⚠️ REDIS_PASSWORD_TEST not set, attempting flush without password..."
+            redis-cli FLUSHDB || echo "Redis flush failed (no password)"
+          else
+            redis-cli -a "$REDIS_PASSWORD" FLUSHDB 2>/dev/null && echo "✅ Redis database flushed successfully." || echo "⚠️ Redis flush failed"
+          fi
+          # Verify the flush worked by checking key count
+          KEY_COUNT=$(redis-cli -a "$REDIS_PASSWORD" DBSIZE 2>/dev/null | grep -oE '[0-9]+' || echo "unknown")
+          echo "Redis key count after flush: $KEY_COUNT"
+
       - name: Run All Tests and Generate Merged Coverage Report
         # This single step runs both unit and integration tests, then merges their
         # coverage data into a single report. It combines the environment variables

docs/adr/0006-background-job-processing-and-task-queues.md

@@ -2,7 +2,7 @@
 
 **Date**: 2025-12-12
 
-**Status**: Proposed
+**Status**: Accepted
 
 ## Context
 
@@ -16,3 +16,82 @@ We will implement a dedicated background job processing system using a task queu
 
 **Positive**: Decouples the API from heavy processing, allows for retries on failure, and enables scaling the processing workers independently. Increases application reliability and resilience.
 **Negative**: Introduces a new dependency (Redis) into the infrastructure. Requires refactoring of the flyer processing logic to work within a job queue structure.
+
+## Implementation Details
+
+### Queue Infrastructure
+
+The implementation uses **BullMQ v5.65.1** with **ioredis v5.8.2** for Redis connectivity. Six distinct queues handle different job types:
+
+| Queue Name                   | Purpose                     | Retry Attempts | Backoff Strategy       |
+| ---------------------------- | --------------------------- | -------------- | ---------------------- |
+| `flyer-processing`           | OCR/AI processing of flyers | 3              | Exponential (5s base)  |
+| `email-sending`              | Email delivery              | 5              | Exponential (10s base) |
+| `analytics-reporting`        | Daily report generation     | 2              | Exponential (60s base) |
+| `weekly-analytics-reporting` | Weekly report generation    | 2              | Exponential (1h base)  |
+| `file-cleanup`               | Temporary file cleanup      | 3              | Exponential (30s base) |
+| `token-cleanup`              | Expired token removal       | 2              | Exponential (1h base)  |
+
+### Key Files
+
+- `src/services/queues.server.ts` - Queue definitions and configuration
+- `src/services/workers.server.ts` - Worker implementations with configurable concurrency
+- `src/services/redis.server.ts` - Redis connection management
+- `src/services/queueService.server.ts` - Queue lifecycle and graceful shutdown
+- `src/services/flyerProcessingService.server.ts` - 5-stage flyer processing pipeline
+- `src/types/job-data.ts` - TypeScript interfaces for all job data types
+
+### API Design
+
+Endpoints for long-running tasks return **202 Accepted** immediately with a job ID:
+
+```text
+POST /api/ai/upload-and-process → 202 { jobId: "..." }
+GET  /api/ai/jobs/:jobId/status → { state: "...", progress: ... }
+```
+
+### Worker Configuration
+
+Workers are configured via environment variables:
+
+- `WORKER_CONCURRENCY` - Flyer processing parallelism (default: 1)
+- `EMAIL_WORKER_CONCURRENCY` - Email worker parallelism (default: 10)
+- `ANALYTICS_WORKER_CONCURRENCY` - Analytics worker parallelism (default: 1)
+- `CLEANUP_WORKER_CONCURRENCY` - Cleanup worker parallelism (default: 10)
+
+### Monitoring
+
+- **Bull Board UI** available at `/api/admin/jobs` for admin users
+- Worker status endpoint: `GET /api/admin/workers/status`
+- Queue status endpoint: `GET /api/admin/queues/status`
+
+### Graceful Shutdown
+
+Both API and worker processes implement graceful shutdown with a 30-second timeout, ensuring in-flight jobs complete before process termination.
+
+## Compliance Notes
+
+### Deprecated Synchronous Endpoints
+
+The following endpoints process flyers synchronously and are **deprecated**:
+
+- `POST /api/ai/upload-legacy` - For integration testing only
+- `POST /api/ai/flyers/process` - Legacy workflow, should migrate to queue-based approach
+
+New integrations MUST use `POST /api/ai/upload-and-process` for queue-based processing.
+
+### Email Handling
+
+- **Bulk emails** (deal notifications): Enqueued via `emailQueue`
+- **Transactional emails** (password reset): Sent synchronously for immediate user feedback
+
+## Future Enhancements
+
+Potential improvements for consideration:
+
+1. **Dead Letter Queue (DLQ)**: Move permanently failed jobs to a dedicated queue for analysis
+2. **Job Priority Levels**: Allow priority-based processing for different job types
+3. **Real-time Progress**: WebSocket/SSE for live job progress updates to clients
+4. **Per-Queue Rate Limiting**: Throttle job processing based on external API limits
+5. **Job Dependencies**: Support for jobs that depend on completion of other jobs
+6. **Prometheus Metrics**: Export queue metrics for observability dashboards

docs/adr/0009-caching-strategy-for-read-heavy-operations.md

@@ -2,7 +2,7 @@
 
 **Date**: 2025-12-12
 
-**Status**: Proposed
+**Status**: Accepted
 
 ## Context
 
@@ -20,3 +20,107 @@ We will implement a multi-layered caching strategy using an in-memory data store
 
 **Positive**: Directly addresses application performance and scalability. Reduces database load and improves API response times for common requests.
 **Negative**: Introduces Redis as a dependency if not already used. Adds complexity to the data-fetching logic and requires careful management of cache invalidation to prevent stale data.
+
+## Implementation Details
+
+### Cache Service
+
+A centralized cache service (`src/services/cacheService.server.ts`) provides reusable caching functionality:
+
+- **`getOrSet<T>(key, fetcher, options)`**: Cache-aside pattern implementation
+- **`get<T>(key)`**: Retrieve cached value
+- **`set<T>(key, value, ttl)`**: Store value with TTL
+- **`del(key)`**: Delete specific key
+- **`invalidatePattern(pattern)`**: Delete keys matching a pattern
+
+All cache operations are fail-safe - cache failures do not break the application.
+
+### TTL Configuration
+
+Different data types use different TTL values based on volatility:
+
+| Data Type           | TTL       | Rationale                              |
+| ------------------- | --------- | -------------------------------------- |
+| Brands/Stores       | 1 hour    | Rarely changes, safe to cache longer   |
+| Flyer lists         | 5 minutes | Changes when new flyers are added      |
+| Individual flyers   | 10 minutes| Stable once created                    |
+| Flyer items         | 10 minutes| Stable once created                    |
+| Statistics          | 5 minutes | Can be slightly stale                  |
+| Frequent sales      | 15 minutes| Aggregated data, updated periodically  |
+| Categories          | 1 hour    | Rarely changes                         |
+
+### Cache Key Strategy
+
+Cache keys follow a consistent prefix pattern for pattern-based invalidation:
+
+- `cache:brands` - All brands list
+- `cache:flyers:{limit}:{offset}` - Paginated flyer lists
+- `cache:flyer:{id}` - Individual flyer data
+- `cache:flyer-items:{flyerId}` - Items for a specific flyer
+- `cache:stats:*` - Statistics data
+- `geocode:{address}` - Geocoding results (30-day TTL)
+
+### Cached Endpoints
+
+The following repository methods implement server-side caching:
+
+| Method | Cache Key Pattern | TTL |
+| ------ | ----------------- | --- |
+| `FlyerRepository.getAllBrands()` | `cache:brands` | 1 hour |
+| `FlyerRepository.getFlyers()` | `cache:flyers:{limit}:{offset}` | 5 minutes |
+| `FlyerRepository.getFlyerItems()` | `cache:flyer-items:{flyerId}` | 10 minutes |
+
+### Cache Invalidation
+
+**Event-based invalidation** is triggered on write operations:
+
+- **Flyer creation** (`FlyerPersistenceService.saveFlyer`): Invalidates all `cache:flyers*` keys
+- **Flyer deletion** (`FlyerRepository.deleteFlyer`): Invalidates specific flyer and flyer items cache, plus flyer lists
+
+**Manual invalidation** via admin endpoints:
+
+- `POST /api/admin/system/clear-cache` - Clears all application cache (flyers, brands, stats)
+- `POST /api/admin/system/clear-geocode-cache` - Clears geocoding cache
+
+### Client-Side Caching
+
+TanStack React Query provides client-side caching with configurable stale times:
+
+| Query Type        | Stale Time  |
+| ----------------- | ----------- |
+| Categories        | 1 hour      |
+| Master Items      | 10 minutes  |
+| Flyer Items       | 5 minutes   |
+| Flyers            | 2 minutes   |
+| Shopping Lists    | 1 minute    |
+| Activity Log      | 30 seconds  |
+
+### Multi-Layer Cache Architecture
+
+```text
+Client Request
+      ↓
+[TanStack React Query] ← Client-side cache (staleTime-based)
+      ↓
+[Express API]
+      ↓
+[CacheService.getOrSet()] ← Server-side Redis cache (TTL-based)
+      ↓
+[PostgreSQL Database]
+```
+
+## Key Files
+
+- `src/services/cacheService.server.ts` - Centralized cache service
+- `src/services/db/flyer.db.ts` - Repository with caching for brands, flyers, flyer items
+- `src/services/flyerPersistenceService.server.ts` - Cache invalidation on flyer creation
+- `src/routes/admin.routes.ts` - Admin cache management endpoints
+- `src/config/queryClient.ts` - Client-side query cache configuration
+
+## Future Enhancements
+
+1. **Recipe caching**: Add caching to expensive recipe queries (by-sale-percentage, etc.)
+2. **Cache warming**: Pre-populate cache on startup for frequently accessed static data
+3. **Cache metrics**: Add hit/miss rate monitoring for observability
+4. **Conditional caching**: Skip cache for authenticated user-specific data
+5. **Cache compression**: Compress large cached payloads to reduce Redis memory usage

src/routes/admin.routes.ts

@@ -8,6 +8,7 @@ import { z } from 'zod';
 import * as db from '../services/db/index.db';
 import type { UserProfile } from '../types';
 import { geocodingService } from '../services/geocodingService.server';
+import { cacheService } from '../services/cacheService.server';
 import { requireFileUpload } from '../middleware/fileUpload.middleware'; // This was a duplicate, fixed.
 import {
   createUploadMiddleware,
@@ -635,6 +636,44 @@ router.post(
   },
 );
 
+/**
+ * POST /api/admin/system/clear-cache - Clears the application data cache.
+ * Clears cached flyers, brands, and stats data from Redis.
+ * Requires admin privileges.
+ */
+router.post(
+  '/system/clear-cache',
+  adminTriggerLimiter,
+  validateRequest(emptySchema),
+  async (req: Request, res: Response, next: NextFunction) => {
+    const userProfile = req.user as UserProfile;
+    req.log.info(
+      `[Admin] Manual cache clear received from user: ${userProfile.user.user_id}`,
+    );
+
+    try {
+      const [flyersDeleted, brandsDeleted, statsDeleted] = await Promise.all([
+        cacheService.invalidateFlyers(req.log),
+        cacheService.invalidateBrands(req.log),
+        cacheService.invalidateStats(req.log),
+      ]);
+
+      const totalDeleted = flyersDeleted + brandsDeleted + statsDeleted;
+      res.status(200).json({
+        message: `Successfully cleared the application cache. ${totalDeleted} keys were removed.`,
+        details: {
+          flyers: flyersDeleted,
+          brands: brandsDeleted,
+          stats: statsDeleted,
+        },
+      });
+    } catch (error) {
+      req.log.error({ error }, '[Admin] Failed to clear application cache.');
+      next(error);
+    }
+  },
+);
+
 /* Catches errors from multer (e.g., file size, file filter) */
 router.use(handleMulterError);
 

src/routes/ai.routes.ts

@@ -234,6 +234,9 @@ router.post(
  * POST /api/ai/upload-legacy - Process a flyer upload from a legacy client.
  * This is an authenticated route that processes the flyer synchronously.
  * This is used for integration testing the legacy upload flow.
+ *
+ * @deprecated Use POST /api/ai/upload-and-process instead for async queue-based processing (ADR-0006).
+ * This synchronous endpoint is retained only for integration testing purposes.
  */
 router.post(
   '/upload-legacy',
@@ -282,9 +285,12 @@ router.get(
 );
 
 /**
- * This endpoint saves the processed flyer data to the database. It is the final step
- * in the flyer upload workflow after the AI has extracted the data.
+ * POST /api/ai/flyers/process - Saves the processed flyer data to the database.
+ * This is the final step in the flyer upload workflow after the AI has extracted the data.
  * It uses `optionalAuth` to handle submissions from both anonymous and authenticated users.
+ *
+ * @deprecated Use POST /api/ai/upload-and-process instead for async queue-based processing (ADR-0006).
+ * This synchronous endpoint processes flyers inline and should be migrated to the queue-based approach.
  */
 router.post(
   '/flyers/process',

src/services/cacheService.server.ts

@@ -0,0 +1,226 @@
+// src/services/cacheService.server.ts
+/**
+ * @file Centralized caching service implementing the Cache-Aside pattern.
+ * This service provides a reusable wrapper around Redis for caching read-heavy operations.
+ * See ADR-009 for the caching strategy documentation.
+ */
+import type { Logger } from 'pino';
+import { connection as redis } from './redis.server';
+import { logger as globalLogger } from './logger.server';
+
+/**
+ * TTL values in seconds for different cache types.
+ * These can be tuned based on data volatility and freshness requirements.
+ */
+export const CACHE_TTL = {
+  /** Brand/store list - rarely changes, safe to cache for 1 hour */
+  BRANDS: 60 * 60,
+  /** Flyer list - changes when new flyers are added, cache for 5 minutes */
+  FLYERS: 5 * 60,
+  /** Individual flyer data - cache for 10 minutes */
+  FLYER: 10 * 60,
+  /** Flyer items - cache for 10 minutes */
+  FLYER_ITEMS: 10 * 60,
+  /** Statistics - can be slightly stale, cache for 5 minutes */
+  STATS: 5 * 60,
+  /** Most frequent sales - aggregated data, cache for 15 minutes */
+  FREQUENT_SALES: 15 * 60,
+  /** Categories - rarely changes, cache for 1 hour */
+  CATEGORIES: 60 * 60,
+} as const;
+
+/**
+ * Cache key prefixes for different data types.
+ * Using consistent prefixes allows for pattern-based invalidation.
+ */
+export const CACHE_PREFIX = {
+  BRANDS: 'cache:brands',
+  FLYERS: 'cache:flyers',
+  FLYER: 'cache:flyer',
+  FLYER_ITEMS: 'cache:flyer-items',
+  STATS: 'cache:stats',
+  FREQUENT_SALES: 'cache:frequent-sales',
+  CATEGORIES: 'cache:categories',
+} as const;
+
+export interface CacheOptions {
+  /** Time-to-live in seconds */
+  ttl: number;
+  /** Optional logger for this operation */
+  logger?: Logger;
+}
+
+/**
+ * Centralized cache service implementing the Cache-Aside pattern.
+ * All cache operations are fail-safe - cache failures do not break the application.
+ */
+class CacheService {
+  /**
+   * Retrieves a value from cache.
+   * @param key The cache key
+   * @param logger Optional logger for this operation
+   * @returns The cached value or null if not found/error
+   */
+  async get<T>(key: string, logger: Logger = globalLogger): Promise<T | null> {
+    try {
+      const cached = await redis.get(key);
+      if (cached) {
+        logger.debug({ cacheKey: key }, 'Cache hit');
+        return JSON.parse(cached) as T;
+      }
+      logger.debug({ cacheKey: key }, 'Cache miss');
+      return null;
+    } catch (error) {
+      logger.warn({ err: error, cacheKey: key }, 'Redis GET failed, proceeding without cache');
+      return null;
+    }
+  }
+
+  /**
+   * Stores a value in cache with TTL.
+   * @param key The cache key
+   * @param value The value to cache (will be JSON stringified)
+   * @param ttl Time-to-live in seconds
+   * @param logger Optional logger for this operation
+   */
+  async set<T>(key: string, value: T, ttl: number, logger: Logger = globalLogger): Promise<void> {
+    try {
+      await redis.set(key, JSON.stringify(value), 'EX', ttl);
+      logger.debug({ cacheKey: key, ttl }, 'Value cached');
+    } catch (error) {
+      logger.warn({ err: error, cacheKey: key }, 'Redis SET failed, value not cached');
+    }
+  }
+
+  /**
+   * Deletes a specific key from cache.
+   * @param key The cache key to delete
+   * @param logger Optional logger for this operation
+   */
+  async del(key: string, logger: Logger = globalLogger): Promise<void> {
+    try {
+      await redis.del(key);
+      logger.debug({ cacheKey: key }, 'Cache key deleted');
+    } catch (error) {
+      logger.warn({ err: error, cacheKey: key }, 'Redis DEL failed');
+    }
+  }
+
+  /**
+   * Invalidates all cache keys matching a pattern.
+   * Uses SCAN for safe iteration over large key sets.
+   * @param pattern The pattern to match (e.g., 'cache:flyers*')
+   * @param logger Optional logger for this operation
+   * @returns The number of keys deleted
+   */
+  async invalidatePattern(pattern: string, logger: Logger = globalLogger): Promise<number> {
+    let cursor = '0';
+    let totalDeleted = 0;
+
+    try {
+      do {
+        const [nextCursor, keys] = await redis.scan(cursor, 'MATCH', pattern, 'COUNT', 100);
+        cursor = nextCursor;
+        if (keys.length > 0) {
+          const deletedCount = await redis.del(...keys);
+          totalDeleted += deletedCount;
+        }
+      } while (cursor !== '0');
+
+      logger.info({ pattern, totalDeleted }, 'Cache invalidation completed');
+      return totalDeleted;
+    } catch (error) {
+      logger.error({ err: error, pattern }, 'Cache invalidation failed');
+      throw error;
+    }
+  }
+
+  /**
+   * Implements the Cache-Aside pattern: try cache first, fall back to fetcher, cache result.
+   * This is the primary method for adding caching to existing repository methods.
+   *
+   * @param key The cache key
+   * @param fetcher Function that retrieves data from the source (e.g., database)
+   * @param options Cache options including TTL
+   * @returns The data (from cache or fetcher)
+   *
+   * @example
+   * ```typescript
+   * const brands = await cacheService.getOrSet(
+   *   CACHE_PREFIX.BRANDS,
+   *   () => this.db.query('SELECT * FROM stores'),
+   *   { ttl: CACHE_TTL.BRANDS, logger }
+   * );
+   * ```
+   */
+  async getOrSet<T>(
+    key: string,
+    fetcher: () => Promise<T>,
+    options: CacheOptions,
+  ): Promise<T> {
+    const logger = options.logger ?? globalLogger;
+
+    // Try to get from cache first
+    const cached = await this.get<T>(key, logger);
+    if (cached !== null) {
+      return cached;
+    }
+
+    // Cache miss - fetch from source
+    const data = await fetcher();
+
+    // Cache the result (fire-and-forget, don't await)
+    this.set(key, data, options.ttl, logger).catch(() => {
+      // Error already logged in set()
+    });
+
+    return data;
+  }
+
+  // --- Convenience methods for specific cache types ---
+
+  /**
+   * Invalidates all brand-related cache entries.
+   */
+  async invalidateBrands(logger: Logger = globalLogger): Promise<number> {
+    return this.invalidatePattern(`${CACHE_PREFIX.BRANDS}*`, logger);
+  }
+
+  /**
+   * Invalidates all flyer-related cache entries.
+   */
+  async invalidateFlyers(logger: Logger = globalLogger): Promise<number> {
+    const patterns = [
+      `${CACHE_PREFIX.FLYERS}*`,
+      `${CACHE_PREFIX.FLYER}*`,
+      `${CACHE_PREFIX.FLYER_ITEMS}*`,
+    ];
+
+    let total = 0;
+    for (const pattern of patterns) {
+      total += await this.invalidatePattern(pattern, logger);
+    }
+    return total;
+  }
+
+  /**
+   * Invalidates cache for a specific flyer and its items.
+   */
+  async invalidateFlyer(flyerId: number, logger: Logger = globalLogger): Promise<void> {
+    await Promise.all([
+      this.del(`${CACHE_PREFIX.FLYER}:${flyerId}`, logger),
+      this.del(`${CACHE_PREFIX.FLYER_ITEMS}:${flyerId}`, logger),
+      // Also invalidate the flyers list since it may contain this flyer
+      this.invalidatePattern(`${CACHE_PREFIX.FLYERS}*`, logger),
+    ]);
+  }
+
+  /**
+   * Invalidates all statistics cache entries.
+   */
+  async invalidateStats(logger: Logger = globalLogger): Promise<number> {
+    return this.invalidatePattern(`${CACHE_PREFIX.STATS}*`, logger);
+  }
+}
+
+export const cacheService = new CacheService();

src/services/db/flyer.db.ts

@@ -3,6 +3,7 @@ import type { Pool, PoolClient } from 'pg';
 import { getPool, withTransaction } from './connection.db';
 import type { Logger } from 'pino';
 import { UniqueConstraintError, NotFoundError, handleDbError } from './errors.db';
+import { cacheService, CACHE_TTL, CACHE_PREFIX } from '../cacheService.server';
 import type {
   Flyer,
   FlyerItem,
@@ -229,22 +230,31 @@ export class FlyerRepository {
 
   /**
    * Retrieves all distinct brands from the stores table.
+   * Uses cache-aside pattern with 1-hour TTL (brands rarely change).
    * @returns A promise that resolves to an array of Brand objects.
    */
   async getAllBrands(logger: Logger): Promise<Brand[]> {
-    try {
-      const query = `
-        SELECT s.store_id as brand_id, s.name, s.logo_url, s.created_at, s.updated_at
-        FROM public.stores s
-        ORDER BY s.name;
-      `;
-      const res = await this.db.query<Brand>(query);
-      return res.rows;
-    } catch (error) {
-      handleDbError(error, logger, 'Database error in getAllBrands', {}, {
-        defaultMessage: 'Failed to retrieve brands from database.',
-      });
-    }
+    const cacheKey = CACHE_PREFIX.BRANDS;
+
+    return cacheService.getOrSet<Brand[]>(
+      cacheKey,
+      async () => {
+        try {
+          const query = `
+            SELECT s.store_id as brand_id, s.name, s.logo_url, s.created_at, s.updated_at
+            FROM public.stores s
+            ORDER BY s.name;
+          `;
+          const res = await this.db.query<Brand>(query);
+          return res.rows;
+        } catch (error) {
+          handleDbError(error, logger, 'Database error in getAllBrands', {}, {
+            defaultMessage: 'Failed to retrieve brands from database.',
+          });
+        }
+      },
+      { ttl: CACHE_TTL.BRANDS, logger },
+    );
   }
 
   /**
@@ -262,49 +272,67 @@ export class FlyerRepository {
 
   /**
    * Retrieves all flyers from the database, ordered by creation date.
+   * Uses cache-aside pattern with 5-minute TTL.
    * @param limit The maximum number of flyers to return.
    * @param offset The number of flyers to skip.
    * @returns A promise that resolves to an array of Flyer objects.
    */
   async getFlyers(logger: Logger, limit: number = 20, offset: number = 0): Promise<Flyer[]> {
-    try {
-      const query = `
-        SELECT
-          f.*,
-          json_build_object(
-            'store_id', s.store_id,
-            'name', s.name,
-            'logo_url', s.logo_url
-          ) as store
-        FROM public.flyers f
-        JOIN public.stores s ON f.store_id = s.store_id
-        ORDER BY f.created_at DESC LIMIT $1 OFFSET $2`;
-      const res = await this.db.query<Flyer>(query, [limit, offset]);
-      return res.rows;
-    } catch (error) {
-      handleDbError(error, logger, 'Database error in getFlyers', { limit, offset }, {
-        defaultMessage: 'Failed to retrieve flyers from database.',
-      });
-    }
+    const cacheKey = `${CACHE_PREFIX.FLYERS}:${limit}:${offset}`;
+
+    return cacheService.getOrSet<Flyer[]>(
+      cacheKey,
+      async () => {
+        try {
+          const query = `
+            SELECT
+              f.*,
+              json_build_object(
+                'store_id', s.store_id,
+                'name', s.name,
+                'logo_url', s.logo_url
+              ) as store
+            FROM public.flyers f
+            JOIN public.stores s ON f.store_id = s.store_id
+            ORDER BY f.created_at DESC LIMIT $1 OFFSET $2`;
+          const res = await this.db.query<Flyer>(query, [limit, offset]);
+          return res.rows;
+        } catch (error) {
+          handleDbError(error, logger, 'Database error in getFlyers', { limit, offset }, {
+            defaultMessage: 'Failed to retrieve flyers from database.',
+          });
+        }
+      },
+      { ttl: CACHE_TTL.FLYERS, logger },
+    );
   }
 
   /**
    * Retrieves all items for a specific flyer.
+   * Uses cache-aside pattern with 10-minute TTL.
    * @param flyerId The ID of the flyer.
    * @returns A promise that resolves to an array of FlyerItem objects.
    */
   async getFlyerItems(flyerId: number, logger: Logger): Promise<FlyerItem[]> {
-    try {
-      const res = await this.db.query<FlyerItem>(
-        'SELECT * FROM public.flyer_items WHERE flyer_id = $1 ORDER BY flyer_item_id ASC',
-        [flyerId],
-      );
-      return res.rows;
-    } catch (error) {
-      handleDbError(error, logger, 'Database error in getFlyerItems', { flyerId }, {
-        defaultMessage: 'Failed to retrieve flyer items from database.',
-      });
-    }
+    const cacheKey = `${CACHE_PREFIX.FLYER_ITEMS}:${flyerId}`;
+
+    return cacheService.getOrSet<FlyerItem[]>(
+      cacheKey,
+      async () => {
+        try {
+          const res = await this.db.query<FlyerItem>(
+            'SELECT * FROM public.flyer_items WHERE flyer_id = $1 ORDER BY flyer_item_id ASC',
+            [flyerId],
+          );
+          return res.rows;
+        } catch (error) {
+          handleDbError(error, logger, 'Database error in getFlyerItems', { flyerId }, {
+            defaultMessage: 'Failed to retrieve flyer items from database.',
+          });
+        }
+      },
+      { ttl: CACHE_TTL.FLYER_ITEMS, logger },
+    );
   }
 
   /**
@@ -399,6 +427,7 @@ export class FlyerRepository {
   /**
    * Deletes a flyer and all its associated items in a transaction.
    * This should typically be an admin-only action.
+   * Invalidates related cache entries after successful deletion.
    * @param flyerId The ID of the flyer to delete.
    */
   async deleteFlyer(flyerId: number, logger: Logger): Promise<void> {
@@ -413,6 +442,9 @@ export class FlyerRepository {
         }
         logger.info(`Successfully deleted flyer with ID: ${flyerId}`);
       });
+
+      // Invalidate cache after successful deletion
+      await cacheService.invalidateFlyer(flyerId, logger);
     } catch (error) {
       handleDbError(error, logger, 'Database transaction error in deleteFlyer', { flyerId }, {
         defaultMessage: 'Failed to delete flyer.',

src/services/flyerPersistenceService.server.ts

@@ -4,12 +4,13 @@ import { withTransaction } from './db/connection.db';
 import { createFlyerAndItems } from './db/flyer.db';
 import { AdminRepository } from './db/admin.db';
 import { GamificationRepository } from './db/gamification.db';
+import { cacheService } from './cacheService.server';
 import type { FlyerInsert, FlyerItemInsert, Flyer } from '../types';
 
 export class FlyerPersistenceService {
   /**
    * Saves the flyer and its items to the database within a transaction.
-   * Also logs the activity.
+   * Also logs the activity and invalidates related cache entries.
    */
   async saveFlyer(
     flyerData: FlyerInsert,
@@ -17,7 +18,7 @@ export class FlyerPersistenceService {
     userId: string | undefined,
     logger: Logger,
   ): Promise<Flyer> {
-    return withTransaction(async (client) => {
+    const flyer = await withTransaction(async (client) => {
       const { flyer, items } = await createFlyerAndItems(flyerData, itemsForDb, logger, client);
 
       logger.info(
@@ -43,5 +44,12 @@ export class FlyerPersistenceService {
       }
       return flyer;
     });
+
+    // Invalidate flyer list cache after successful creation (fire-and-forget)
+    cacheService.invalidateFlyers(logger).catch(() => {
+      // Error already logged in invalidateFlyers
+    });
+
+    return flyer;
   }
 }

src/tests/setup/integration-global-setup.ts

@@ -14,22 +14,34 @@ let globalPool: ReturnType<typeof getPool> | null = null;
  * This is critical because old jobs with outdated error messages can pollute test results.
  */
 async function cleanAllQueues() {
-  console.log(`[PID:${process.pid}] Cleaning all BullMQ queues...`);
-  const { flyerQueue, cleanupQueue, emailQueue, analyticsQueue, weeklyAnalyticsQueue, tokenCleanupQueue } = await import('../../services/queues.server');
+  // Use console.error for visibility in CI logs (stderr is often more reliable)
+  console.error(`[PID:${process.pid}] [QUEUE CLEANUP] Starting BullMQ queue cleanup...`);
 
-  const queues = [flyerQueue, cleanupQueue, emailQueue, analyticsQueue, weeklyAnalyticsQueue, tokenCleanupQueue];
+  try {
+    const { flyerQueue, cleanupQueue, emailQueue, analyticsQueue, weeklyAnalyticsQueue, tokenCleanupQueue } = await import('../../services/queues.server');
+    console.error(`[QUEUE CLEANUP] Successfully imported queue modules`);
 
-  for (const queue of queues) {
-    try {
-      // obliterate() removes ALL data associated with the queue from Redis
-      await queue.obliterate({ force: true });
-      console.log(`  ✅ Cleaned queue: ${queue.name}`);
-    } catch (error) {
-      // Log but don't fail - the queue might not exist yet
-      console.log(`  ⚠️ Could not clean queue ${queue.name}: ${error instanceof Error ? error.message : 'Unknown error'}`);
+    const queues = [flyerQueue, cleanupQueue, emailQueue, analyticsQueue, weeklyAnalyticsQueue, tokenCleanupQueue];
+
+    for (const queue of queues) {
+      try {
+        // Log queue state before cleanup
+        const jobCounts = await queue.getJobCounts();
+        console.error(`[QUEUE CLEANUP] Queue "${queue.name}" before cleanup: ${JSON.stringify(jobCounts)}`);
+
+        // obliterate() removes ALL data associated with the queue from Redis
+        await queue.obliterate({ force: true });
+        console.error(`  ✅ [QUEUE CLEANUP] Cleaned queue: ${queue.name}`);
+      } catch (error) {
+        // Log but don't fail - the queue might not exist yet
+        console.error(`  ⚠️ [QUEUE CLEANUP] Could not clean queue ${queue.name}: ${error instanceof Error ? error.message : 'Unknown error'}`);
+      }
     }
+    console.error(`✅ [PID:${process.pid}] [QUEUE CLEANUP] All queues cleaned successfully.`);
+  } catch (error) {
+    console.error(`❌ [PID:${process.pid}] [QUEUE CLEANUP] CRITICAL ERROR during queue cleanup:`, error);
+    // Don't throw - we want the tests to continue even if cleanup fails
   }
-  console.log(`✅ [PID:${process.pid}] All queues cleaned.`);
 }
 
 export async function setup() {
@@ -38,11 +50,15 @@ export async function setup() {
   // Fix: Set the FRONTEND_URL globally for the test server instance
   process.env.FRONTEND_URL = 'https://example.com';
 
-  console.log(`\n--- [PID:${process.pid}] Running Integration Test GLOBAL Setup ---`);
+  console.error(`\n--- [PID:${process.pid}] Running Integration Test GLOBAL Setup ---`);
+  console.error(`[SETUP] REDIS_URL: ${process.env.REDIS_URL}`);
+  console.error(`[SETUP] REDIS_PASSWORD is set: ${!!process.env.REDIS_PASSWORD}`);
 
   // CRITICAL: Clean all queues BEFORE running any tests to remove stale jobs
   // from previous test runs that may have outdated error messages.
+  console.error(`[SETUP] About to call cleanAllQueues()...`);
   await cleanAllQueues();
+  console.error(`[SETUP] cleanAllQueues() completed.`);
 
   // The integration setup is now the single source of truth for preparing the test DB.
   // It runs the same seed script that `npm run db:reset:test` used.