Tomcat のパフォーマンスを向上させる方法: スレッド プールを使用する

<Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="200" minSpareThreads="25"/>

<Connector executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" />

import org.apache.tomcat.util.threads.ThreadPoolExecutor;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class MyServlet extends HttpServlet {

    private ThreadPoolExecutor executor;

    @Override
    public void init() throws ServletException {
        // 创建线程池
        executor = new ThreadPoolExecutor(10, 20, 60, TimeUnit.SECONDS, new ArrayBlockingQueue<>(50));
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        executor.execute(new RequestHandler(req, resp));
    }

    @Override
    public void destroy() {
        // 关闭线程池
        executor.shutdown();
    }

    private class RequestHandler implements Runnable {

        private final HttpServletRequest request;
        private final HttpServletResponse response;

        public RequestHandler(HttpServletRequest request, HttpServletResponse response) {
            this.request = request;
            this.response = response;
        }

        @Override
        public void run() {
            // 处理请求的业务逻辑
            // ...
        }
    }
}