SpringBoot内嵌tomcat调优

Springboot Tomcat默认配置

可通过org.springframework.boot.autoconfigure.web.ServerProperties查看，其中包括属性tomcat、jetty、undertow三种服务器的设置，默认启用tomcat。

server:
  tomcat:
    accept-count: 100 # 最大连接等待数，默认100 
    max-connections: 10000 #最大连接数，默认为10000 
    max-threads: 200  #最大工作线程数，默认200
    min-spare-threads: 10 #最小工作线程数，默认10

最大连接数=max-connections + accept-count
最大并发数=max-threads
关于max-connections, accept-count, max-threads三者关系可参考：
秒懂：tomcat的maxConnections、maxThreads、acceptCount 图解

Tomcat经验值

max-threads线程数的经验值为：
1核2g内存，线程数经验值200；
4核8g内存，线程数经验值800。

4核8g内存，建议值：

server:
  tomcat:
    accept-count: 1000
    max-connections: 10000 
    max-threads: 800 
    min-spare-threads: 100

自定义Springboot Tomcat配置

示例代码中均为get方法，可调整为set方法进行配置设置

import org.apache.coyote.http11.AbstractHttp11Protocol;
import org.apache.coyote.http11.Http11NioProtocol;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.context.annotation.Configuration;

@Configuration
public class TomcatCustomizer implements WebServerFactoryCustomizer<TomcatServletWebServerFactory> {

  private static final Logger logger = LogManager.getLogger(TomcatCustomizer.class);

  @Override
  public void customize(TomcatServletWebServerFactory factory) {
    factory.addConnectorCustomizers(connector -> {
      //AbstractHttp11Protocol protocol = (AbstractHttp11Protocol) connector.getProtocolHandler();
      Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();

      logger.info("####################################################################################");
      logger.info("#");
      logger.info("# TomcatCustomizer");
      logger.info("#");

      logger.info("# MaxConnections {}", protocol.getMaxConnections());
      logger.info("# AcceptorThreadCount {}", protocol.getAcceptorThreadCount());
      logger.info("# AcceptCount {}", protocol.getAcceptCount());

      logger.info("#");
      logger.info("# MaxThread {}", protocol.getMaxThreads());
      logger.info("# MinSpareThreads {}", protocol.getMinSpareThreads());
      logger.info("#");

      logger.info("# ConnectionTimeout {}", protocol.getConnectionTimeout());
      logger.info("# KeepAliveTimeout {}", protocol.getKeepAliveTimeout());
      logger.info("# MaxKeepAliveRequests {}", protocol.getMaxKeepAliveRequests());
      logger.info("#");

      logger.info("####################################################################################");

    });
  }
}

运行结果：

本文地址：https://blog.csdn.net/luo15242208310/article/details/107353987