concurrency-review

Review Java concurrent code for thread safety, race conditions, and deadlocks.

23|7|Updated Feb 22, 2026
One-click install
npx skills add https://github.com/hzy970907/fish-claude-code --skill concurrency-review-hzy970907
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: concurrency-review
Source: https://github.com/hzy970907/fish-claude-code/tree/main/skills/concurrency-review
Command: npx skills add https://github.com/hzy970907/fish-claude-code --skill concurrency-review-hzy970907

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill helps developers identify and fix common concurrency bugs in Java applications, preventing hard-to-reproduce issues like race conditions and deadlocks.

Core Features & Use Cases

  • Thread Safety Analysis: Detects potential race conditions, deadlocks, and visibility issues in multi-threaded Java code.
  • Modern Concurrency Patterns: Reviews usage of Virtual Threads, CompletableFuture, and Spring's @Async.
  • Use Case: A developer has written a new multi-threaded service and wants to ensure it's robust before deploying. They use this Skill to get a comprehensive review of its concurrency aspects.

Quick Start

Use the concurrency-review skill to analyze the attached Java file 'OrderProcessor.java' for thread safety issues.

Frequently Asked Questions about concurrency-review

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

FAQPage Schema
How do I check my Java code for thread safety and race conditions?

Java thread safety analysis reviews synchronized blocks, volatile keywords, and Atomic types to detect race conditions and visibility issues. It identifies potential bugs in multi-threaded applications and suggests best practices for robust concurrency.

What causes deadlocks in Java multithreading and how can I identify them?

Deadlocks in Java multithreading occur when threads block each other indefinitely. Concurrency code review identifies these potential deadlocks by analyzing synchronized blocks and resource locking patterns to prevent hard-to-reproduce application freezes.

How do I review Java Virtual Threads and CompletableFuture usage for concurrency bugs?

Reviewing Java Virtual Threads and CompletableFuture involves checking adherence to modern concurrency patterns. The analysis detects potential thread safety issues and suggests best practices for robust multi-threaded applications using these modern features.

Can I use this concurrency review to check Spring @Async annotation issues?

Yes, you can use concurrency review to check Spring @Async annotation issues. The analysis reviews code involving Spring's @Async annotation to identify potential bugs and suggest best practices for robust multi-threaded execution.

What's the best way to analyze concurrent collections in Java for potential bugs?

The best way to analyze concurrent collections in Java is through a comprehensive concurrency review. This examines concurrent collections alongside synchronized blocks and Atomic types to identify potential bugs and ensure thread-safe execution.

When do I need a concurrency review for my Java multi-threaded service?

You need a concurrency review for your Java multi-threaded service before deploying to production. This ensures robustness by identifying hard-to-reproduce issues like race conditions and deadlocks, preventing critical runtime failures.