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Deployment Notes - Notification System

🚀 What's New

This release adds a centralized notification system with real-time WebSocket delivery.

⚠️ Required Actions Before Deployment

1. Run Database Migration

Migration File: database/migrations/014_create_notifications.sql

# Option A: Using psql
psql -h $DB_HOST -U $DB_USER -d $DB_NAME -f database/migrations/014_create_notifications.sql

# Option B: Using Docker
docker-compose exec db psql -U user -d mentorsmind -f /path/to/014_create_notifications.sql

# Option C: Using your migration tool
./database/migrate.sh  # Unix/Linux/Mac
database\migrate.bat   # Windows

2. Verify Migration

-- Check table exists
SELECT * FROM information_schema.tables WHERE table_name = 'notifications';

-- Check structure
\d notifications

-- Test insert
INSERT INTO notifications (user_id, type, title, message)
VALUES (
  (SELECT id FROM users LIMIT 1),
  'system_alert',
  'Test',
  'Migration successful'
);

3. Restart Application

The notification cleanup service will initialize automatically on startup.

✨ New Features

API Endpoints

  • GET /api/v1/notifications - Get paginated notifications
  • GET /api/v1/notifications/unread-count - Get unread count
  • PUT /api/v1/notifications/:id/read - Mark as read
  • PUT /api/v1/notifications/read-all - Mark all as read
  • DELETE /api/v1/notifications/:id - Delete notification

Background Jobs

  • Notification Cleanup: Runs daily at 2:00 AM, deletes notifications older than 90 days

WebSocket Events

  • notification:new - Emitted when a notification is created

📊 Database Changes

New Table: notifications

CREATE TABLE notifications (
    id UUID PRIMARY KEY,
    user_id UUID NOT NULL REFERENCES users(id),
    type notification_type NOT NULL,
    title VARCHAR(255) NOT NULL,
    message TEXT NOT NULL,
    data JSONB DEFAULT '{}'::jsonb,
    is_read BOOLEAN DEFAULT FALSE,
    created_at TIMESTAMP WITH TIME ZONE,
    updated_at TIMESTAMP WITH TIME ZONE
);

New ENUM: notification_type

12 notification types including:

  • session_booked, session_confirmed, session_cancelled
  • payment_received, payment_failed
  • review_received, escrow_released
  • dispute_opened, meeting_confirmed
  • And more...

Indexes Added

6 indexes for optimal query performance on user_id, type, is_read, and created_at.

🔍 Testing After Deployment

1. Test API Endpoints

# Get notifications
curl -H "Authorization: Bearer $TOKEN" \
     https://your-api.com/api/v1/notifications

# Get unread count
curl -H "Authorization: Bearer $TOKEN" \
     https://your-api.com/api/v1/notifications/unread-count

2. Test WebSocket

const socket = io('https://your-api.com', {
  auth: { token: 'YOUR_JWT_TOKEN' }
});

socket.on('notification:new', (data) => {
  console.log('✅ WebSocket working:', data);
});

3. Create Test Notification

// In your application code
await NotificationService.create('user-id', 'system_alert', {
  title: 'Deployment Test',
  message: 'Notification system is live!',
  data: { test: true }
});

📈 Monitoring

Logs to Watch

  • Notification cleanup service initialized - Service started successfully
  • Notification cleanup completed: X notifications deleted - Daily cleanup running
  • Failed to emit notification:new event - WebSocket issues (non-critical)

Metrics to Track

  • Notification creation rate
  • Unread notification count per user
  • WebSocket connection success rate
  • Cleanup job execution time

🔄 Rollback Plan

If issues occur:

1. Rollback Code

git revert HEAD
git push origin main

2. Drop Table (if needed)

DROP TABLE IF EXISTS notifications CASCADE;
DROP TYPE IF EXISTS notification_type CASCADE;

📚 Documentation

  • API Docs: docs/notifications-api.md
  • Integration Examples: docs/notification-integration-examples.md
  • Quick Reference: NOTIFICATIONS_QUICK_REFERENCE.md
  • Implementation Summary: NOTIFICATIONS_IMPLEMENTATION_SUMMARY.md
  • Migration Instructions: MIGRATION_INSTRUCTIONS.md

⚙️ Configuration

No new environment variables required. The system uses existing:

  • Database connection (DATABASE_URL)
  • JWT authentication (JWT_SECRET)
  • WebSocket configuration (existing)

🎯 Success Criteria

  • ✅ Migration runs without errors
  • ✅ Application starts successfully
  • ✅ API endpoints return 200 responses
  • ✅ WebSocket events are received
  • ✅ Cleanup service initializes
  • ✅ No errors in application logs

🆘 Support

If issues arise:

  1. Check application logs for errors
  2. Verify database migration completed
  3. Test WebSocket connectivity
  4. Review MIGRATION_INSTRUCTIONS.md for troubleshooting

📝 Changelog

Added

  • Centralized notification system
  • 5 new API endpoints
  • WebSocket real-time delivery
  • Auto-cleanup cron job
  • Comprehensive documentation

Modified

  • src/routes/index.ts - Added notifications routes
  • src/services/notification.service.ts - Added WebSocket integration

Database

  • New table: notifications
  • New ENUM: notification_type
  • 6 new indexes

Deployment Date: To be filled
Deployed By: To be filled
Environment: To be filled
Status: To be filled