backend-concurrency-review

What problem does it solve?

This Skill helps you review backend code for concurrency bugs that are hard to catch in normal testing, such as race conditions, unsafe shared state, lock misuse, async failures, and retry-related side effects.

Core Features & Use Cases

• Shared State Analysis: Checks singletons, static fields, module globals, and other mutable data that may be accessed by multiple threads or tasks.
• Async and Threading Review: Evaluates CompletableFuture, async/await, goroutines, callbacks, and background work for missed awaits, lost exceptions, and cancellation gaps.
• Safety and Correctness Checks: Looks for atomicity problems, concurrent collection misuse, deadlock risk, backpressure issues, and idempotency violations in retried operations.
• Use Case: A backend service uses a shared cache and retryable write operations; this Skill can flag unsafe mutation, missing synchronization, and duplicate external side effects before release.

Quick Start

Use the backend-concurrency-review skill to inspect this backend code for race conditions, shared mutable state, async exception handling gaps, lock ordering problems, and retry idempotency risks.