I Built a Production-Ready Job Queue in Go from Scratch

说明与用途

使用 Go 构建了一个生产级任务队列，采用 Postgres 代替 Redis，支持重试、限速和优雅关闭。

问题

Develop a background job queue that handles retries, rate limiting, and graceful shutdown without relying on external services like Redis.

结果

A production-ready job queue that eliminates the need for Redis, demonstrates ACID compliance, and showcases Go concurrency best practices.

工作流

• 1. Client POST /jobs to Gin API
• 2. API writes job to Postgres jobs table
• 3. Worker pool (5 goroutines) fetches pending jobs using FOR UPDATE SKIP LOCKED
• 4. Worker processes job and updates status
• 5. On failure, retry with exponential backoff or mark as failed after max attempts
• 6. Graceful shutdown via context cancellation

证据

A REST API where you POST a task, it goes to Postgres, and Go workers process it in background with retries, rate limiting and graceful shutdown.

来源

Postgres as queue (no Redis needed)

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Worker Pool with 5 Goroutines

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Retry with exponential backoff

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