125-java-concurrency

Identify and apply Java concurrency best practices to improve thread safety, scalability, and maintainability by using modern java.util.concurrent utilities, virtual threads, and structured concurrency.

Prerequisites: Run ./mvnw compile or mvn compile before applying any change. If compilation fails, stop immediately — compilation failure is a blocking condition that prevents any further processing.

Core areas: Thread safety fundamentals (ConcurrentHashMap, AtomicInteger, ReentrantLock, ReadWriteLock, Java Memory Model), ExecutorService thread pool configuration (sizing, keep-alive, bounded queues, rejection policies, graceful shutdown), Producer-Consumer and Publish-Subscribe concurrent design patterns (BlockingQueue), CompletableFuture for non-blocking async composition (thenApply/thenCompose/exceptionally/...

当您需要应用 Java 并发最佳实践时使用 - 包括线程安全基础知识、ExecutorService 线程池管理、生产者-消费者等并发设计模式、CompletableFuture 异步编程、不变性和安全发布、死锁避免、虚拟线程和结构化并发、作用域值、背压、取消规则以及并发系统的可观察性。 java 技能项目的一部分 来源：jabrena/cursor-rules-java。