go-concurrency-patterns

# Go Concurrency Patterns Production patterns for Go concurrency including goroutines, channels, synchronization primitives, and context management. ## When to Use This Skill - Building concurrent Go applications - Implementing worker pools and pipelines - Managing goroutine lifecycles - Using channels for communication - Debugging race conditions - Implementing graceful shutdown ## Core Concepts ### 1. Go Concurrency Primitives | Primitive | Purpose | | ----------------- | -------------------------------- | | `goroutine` | Lightweight concurrent execution | | `channel` | Communication between goroutines | | `select` | Multiplex channel operations | | `sync.Mutex` | Mutual exclusion | | `sync.WaitGroup` | Wait for goroutines to complete | | `context.Context` | Cancellation and deadlines | ### 2. Go Concurrency Mantra ``` Don't communicate by sharing memory; share memory by communicating. ``` ## Quick Start ```go package main import ( "context" "fmt" "sync" "time" ) func main() { ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) defer cancel() results := make(chan string, 10) var wg sync.WaitGroup // Spawn workers for i := 0; i < 3; i++ { wg.Add(1) go worker(ctx, i, results, &wg) } // Close results when done go func() { wg.Wait() close(results) }() // Collect re...