Master Go concurrency with goroutines, channels, sync primitives, and context. Use when building concurrent Go applications, implementing worker pools, or debugging race conditions.
npxskills add wshobson/agents--skill go-concurrency-patternsLoading…
Production patterns for Go concurrency including goroutines, channels, synchronization primitives, and context management.
| 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 |
Don't communicate by sharing memory;
share memory by communicating.
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 results
for result := range results {
fmt.Println(result)
}
}
func worker(ctx context.Context, id int, results chan<- string, wg *sync.WaitGroup) {
defer wg.Done()
select {
case <-ctx.Done():
return
case results <- fmt.Sprintf("Worker %d done", id):
}
}
Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.
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