golang-concurrency-patterns

Go concurrency scales when goroutine lifetimes are explicit, cancellation is propagated with context.Context, and shared state is protected (channels or locks). Apply these patterns to build reliable services and avoid common failure modes: goroutine leaks, deadlocks, and data races.

Treat goroutines as resources with a clear owner and shutdown condition.

Use errgroup.WithContext to run concurrent tasks, cancel siblings on error, and wait for completion.

生產服務的 Go 並發模式：上下文取消、errgroup、工作池、有限並行、扇入/扇出以及常見的競爭/死鎖陷阱 來源：bobmatnyc/claude-mpm-skills。