springboot高并发下提高吞吐量的实现

package com.zing.es.sample.config; import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor; import java.util.concurrent.ThreadPoolExecutor; @Configurationpublic class GlobalConfig {  /**   * 默认线程池线程池   *   * @return Executor   */  @Bean  public ThreadPoolTaskExecutor defaultThreadPool() {    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();    //核心线程数目    executor.setCorePoolSize(16);    //指定最大线程数    executor.setMaxPoolSize(300);    //队列中最大的数目    executor.setQueueCapacity(50);    //线程名称前缀    executor.setThreadNamePrefix("defaultThreadPool_");    //rejection-policy：当pool已经达到max size的时候，如何处理新任务    //CALLER_RUNS：不在新线程中执行任务，而是由调用者所在的线程来执行    //对拒绝task的处理策略    executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());    //线程空闲后的最大存活时间    executor.setKeepAliveSeconds(60);    //加载    executor.initialize();    return executor;  }}