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concurrency-review

Review Java concurrency code for thread safety, race conditions, deadlocks, and modern patterns (Virtual Threads, CompletableFuture, @Async). Use when user asks "check thread safety", "concurrency review", "async code review", or when reviewing multi-threaded code.

skills/concurrency-review/SKILL.md

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# Concurrency Review Skill

Review Java concurrent code for correctness, safety, and modern best practices.

## Why This Matters

> Nearly 60% of multithreaded applications encounter issues due to improper management of shared resources. - ACM Study

Concurrency bugs are:
- **Hard to reproduce** - timing-dependent
- **Hard to test** - may only appear under load
- **Hard to debug** - non-deterministic behavior

This skill helps catch issues **before** they reach production.