MotionLab uses Postgres table as push notification queue with retry logic

MotionLab developers built a notification backend using a PostgreSQL table as a queue system for push notifications. The system handles retries, dead letters, and message state tracking without separate queue services. Each notification is stored as a database row with status fields including pending, sent, delivered, retrying, or dead. The implementation manages user preferences and device tokens within the same database structure. This approach allows for audit trails and lifecycle tracking through SQL queries.