ParSeq 是一个简化 Java 编写异步处理代码的框架，优点：

异步操作的并行处理

顺序执行非堵塞计算

通过任务组合实现代码的重用

简单的错误传播和恢复

执行跟踪和可视化

示例代码：

import com.linkedin.parseq.Engine;

import com.linkedin.parseq.EngineBuilder;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

import java.util.concurrent.ScheduledExecutorService;

// ...

final int numCores = Runtime.getRuntime().availableProcessors();

final ExecutorService taskScheduler = Executors.newFixedThreadPool(numCores + 1);

final ScheduledExecutorService timerScheduler = Executors.newSingleThreadScheduledExecutor();

final Engine engine = new EngineBuilder()

.setTaskExecutor(taskScheduler)

.setTimerScheduler(timerScheduler)

.build();

engine.shutdown();

engine.awaitTermination(1, TimeUnit.SECONDS);

taskScheduler.shutdown();

timerScheduler.shutdown();