This article dissects the frequent bugs that cause Go worker‑pool implementations to panic, deadlock, or leak goroutines, explains the four core principles for correct channel and WaitGroup usage, showcases five typical error patterns with concrete code, and provides a complete, production‑ready solution.
Even when a Go function returns cleanly, a spawned goroutine can remain blocked on an unbuffered channel after context cancellation, causing leaks that degrade performance under load; this article explains the hidden pitfall, demonstrates the faulty pattern, and provides robust fixes using buffered channels and context-aware goroutine design.
This article explains how Go's experimental goroutineleak experiment integrates leak detection into the garbage collector, describes the underlying sudog mechanism, and provides step‑by‑step instructions to enable the feature, run a demo, and analyze leaks using pprof.
This comprehensive guide explains how to use Go's built‑in pprof tool to profile CPU, memory, and goroutine behavior, covering integration methods, command‑line analysis, visualization techniques, and step‑by‑step solutions for common performance bottlenecks in production Go services.
