Async Notification Pipeline

An async notification pipeline system designed to explore and implement production-level backend engineering patterns in Python. The project covers the full spectrum of modern backend development: RESTful API design with proper validation and DTOs, PostgreSQL with Alembic migrations, JWT authentication, Redis caching, background job processing, and distributed messaging patterns.

Key patterns implemented include idempotency for safe retries, rate limiting, circuit breakers, the outbox pattern for reliable event publishing, and dead-letter queues for failure handling. These are foundational patterns used across industries like fintech, e-commerce, SaaS platforms, and any system requiring reliable notification delivery, task scheduling, or event-driven architecture at scale.