Go Concurrency Patterns

Production Go concurrency patterns — goroutines, channels, sync primitives, context, worker pools, pipelines, and graceful shutdown. Use when building concurrent Go applications or debugging race conditions.

What's Inside

• Concurrency Primitives — goroutines, channels, select, sync.Mutex, sync.WaitGroup, context.Context, errgroup.Group
• Worker Pool pattern with context cancellation
• Fan-Out / Fan-In Pipeline pattern
• errgroup with Cancellation and concurrency limits
• Bounded Concurrency (Semaphore) — semaphore.Weighted and channel-based semaphore
• Graceful Shutdown pattern with signal handling
• Concurrent Map — sync.Map and ShardedMap for different workloads
• Select Patterns — timeout, non-blocking send/receive, priority select
• Race Detection — go test -race, go build -race
• Best Practices and common pitfalls

When to Use

• Building concurrent Go applications
• Implementing worker pools and pipelines
• Managing goroutine lifecycles and cancellation
• Debugging race conditions
• Implementing graceful shutdown

Installation

npx add https://github.com/wpank/ai/tree/main/skills/backend/go-concurrency

Manual Installation

Cursor (per-project)

From your project root:

mkdir -p .cursor/skills
cp -r ~/.ai-skills/skills/backend/go-concurrency .cursor/skills/go-concurrency

Cursor (global)

mkdir -p ~/.cursor/skills
cp -r ~/.ai-skills/skills/backend/go-concurrency ~/.cursor/skills/go-concurrency

Claude Code (per-project)

From your project root:

mkdir -p .claude/skills
cp -r ~/.ai-skills/skills/backend/go-concurrency .claude/skills/go-concurrency

Claude Code (global)

mkdir -p ~/.claude/skills
cp -r ~/.ai-skills/skills/backend/go-concurrency ~/.claude/skills/go-concurrency

Part of the Backend skill category.