Go Concurrency Patterns (Production) Overview Go concurrency scales when goroutine lifetimes are explicit, cancellation is propagated with , 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. Quick Start Default building blocks - Use to drive cancellation and deadlines. - Use for fan-out/fan-in with early abort. - Bound concurrency (avoid unbounded goroutines) with a semaphore or worker pool. - Prefer immutable data; otherwise protect shared state with a mutex or make a…