concurrency-safety

Identify and fix concurrency bugs in Go programs using synchronization patterns.

Updated Mar 29, 2026
One-click install
npx skills add https://github.com/marquesfelip/agents-and-skills --skill concurrency-safety
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: concurrency-safety
Source: https://github.com/marquesfelip/agents-and-skills/tree/main/skills/concurrency-safety
Command: npx skills add https://github.com/marquesfelip/agents-and-skills --skill concurrency-safety

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Concurrency bugs such as data races, deadlocks, and unsafe shared state are prevented by applying proven synchronization patterns and safe design practices.

Core Features & Use Cases

  • Provides guidance on when to use mutexes, channels, and atomic operations.
  • Includes practical code examples and anti-patterns to avoid common pitfalls like holding locks during external calls.
  • Helps teams design safe concurrent components such as caches, workers, and pipelines with predictable behavior.

Quick Start

Apply these patterns to ensure thread-safe code in your Go projects by identifying shared state and selecting the proper synchronization primitives.

Frequently Asked Questions about concurrency-safety

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I fix a data race condition in Go?

To fix a data race condition, identify shared mutable state and apply proven synchronization patterns like mutexes or channels. This process ensures safe data sharing across goroutines by guiding the selection of proper synchronization primitives based on the specific access pattern.

What is the best way to prevent deadlocks in goroutines?

The best way to prevent deadlocks in goroutines is by applying pattern-driven deadlock avoidance strategies. This involves choosing appropriate synchronization primitives and avoiding common pitfalls like holding locks during external calls to ensure predictable concurrent behavior.

When should I use mutexes versus channels for concurrency sync?

You choose between mutexes and channels based on whether you need to protect shared state or coordinate communication. Mutexes are ideal for guarding shared memory, while channels excel at passing data ownership safely between goroutines to prevent race conditions.

Can I use atomic operations instead of locks for shared state?

Yes, you can use atomic operations instead of locks for simple shared state modifications. Atomic primitives provide race-safe concurrency without the overhead of mutexes, making them suitable for lightweight counter or flag updates in multi-threaded contexts.

Why does holding a mutex during external calls cause deadlocks?

Holding a mutex during external calls causes deadlocks because the lock blocks other goroutines indefinitely while waiting for the external operation to finish. Releasing locks before making external calls is a required pattern to ensure predictable concurrent behavior.

Does this concurrency safety approach work for non-Go multi-threaded contexts?

Yes, this approach works for any multi-threaded context where shared mutable state is accessed. While it provides specific examples for Go programs using goroutines, the underlying synchronization patterns and race detection strategies apply universally to safe concurrent design.