go-concurrency-patterns

Production patterns for Go concurrency including goroutines, channels, synchronization primitives, and context management. - Covers core primitives: goroutines, channels, select, sync.Mutex, sync.WaitGroup, and context.Context with practical examples for each - Includes seven battle-tested patterns: worker pools, fan-out/fan-in pipelines, bounded concurrency with semaphores, graceful shutdown, error groups, concurrent maps, and select timeouts - Provides race detection guidance via command-line flags and best practices for avoiding common pitfalls like goroutine leaks and improper channel closure - Demonstrates context-based cancellation, deadline management, and proper cleanup patterns across all examples - Building concurrent Go applications - Implementing worker pools and pipelines - Managing goroutine lifecycles - Using channels for communication - Debugging race conditions - Implementing graceful shutdown - Use context - For cancellation and deadlines - Close channels - From sender side only - Use errgroup - For concurrent operations with errors - Buffer channels - When you know the count - Prefer channels - Over mutexes when possible - Don't leak goroutines - Always have exit path - Don't close from receiver - Causes panic - Don't use shared memory - Unless necessary - Don't ignore context cancellation - Check ctx.Done() - Don't use time.Sleep for sync - Use proper...