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Merged
prachizala merged 1 commit into from
Nov 8, 2026
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docs: document enqueue idempotency and worker crash resilience #1

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2 changes: 2 additions & 0 deletions README.md
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Expand Up @@ -51,6 +51,8 @@ flowchart TD
| Capability | Technical Implementation | Value |
|---|---|---|
| **Non-Blocking Ingestion** | FastAPI async endpoints + Uvicorn ASGI | Sub-millisecond job admission and horizontal throughput |
| **Enqueue Idempotency** | Redis `SETNX` via `Idempotency-Key` header with TTL cache | Prevents duplicate task dispatches & double-billing on network retries |
| **Crash-Resilient Workers** | Celery `acks_late=True` & `task_reject_on_worker_lost=True` | Automatic message requeue if a worker container OOMs or crashes |
| **Distributed Task Queue** | Celery 5.4 + Redis 7 Broker | Handles heavy computation and external I/O without blocking user threads |
| **Persistent Audit Logging** | PostgreSQL 16 + Async SQLAlchemy 2.0 | Complete execution history, error traces, and duration profiling |
| **Intelligent Rate Limiting** | Redis Sliding Window / Token-Bucket (`ZADD`/`ZREMRANGEBYSCORE`) | Prevents API degradation from traffic spikes or DDoS |
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