线程池创建和运维

我们可以通过如下代码创建一个线程池：
https://www.jianshu.com/p/f030aa5d7a28

线程池参数详解：
https://blog.youkuaiyun.com/qq_50652600/article/details/121212661

https://www.jianshu.com/p/e20c0ba4328c

@Component
public class RecommendFilterThreadPool {

    static ThreadFactory threadFactory = new ThreadFactoryBuilder().setNameFormat("threadname-threadpool").build();

    private static volatile ThreadPoolExecutor threadPoolExecutor = null;

    //Init threadpool
    public static ThreadPoolExecutor getThreadPool(){
        if(threadPoolExecutor == null){
            synchronized (SkuMatchThreadPool.class){
                if(threadPoolExecutor == null){
                    threadPoolExecutor = new ThreadPoolExecutor(
                            100,
                            100,
                            30L,
                            TimeUnit.SECONDS,
                            new LinkedBlockingQueue<>(500),
                            new RejectedExecutionHandler() {
                                @Override
                                public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
                                    throw new RuntimeException("线程池打满");
                                }
                    });
                }
            }
        }
        return threadPoolExecutor;
    }

    //Shut down threadPool
    @PreDestroy
    public void shutDownThreadPool(){
        if(threadPoolExecutor != null){
            threadPoolExecutor.shutdown();
        }
    }
}

在高并发场景会出现线程池被打满情况，在网上找到一个遇到同样问题的案例：
https://www.jianshu.com/p/8e735d25c1de
线程池的种类：
https://www.cnblogs.com/zhuyeshen/p/12683649.html
线程池参数详解：
https://blog.youkuaiyun.com/qq_35909080/article/details/87002367
https://www.cnblogs.com/it-deepinmind/p/13072269.html
补充纠正一下解决方案：
在遇到线程池被打满，有大量队列排队的情况，首先应该考虑是把超时时间设短，这样拿不到数据直接释放线程资源，第二个是考虑为什么请求会超时，是否可以找到解决方案使获取数据不超时，关于将线程池线程数增大我觉得不是合理的解决方案，因为请求超时，怎么设置都会超时，反而造成资源占用严重，影响系统整体性能