SpringBoot optimized embedded Tomcat

SpringBoot test version

<parent>  
    <groupId>org.springframework.boot</groupId>  
    <artifactId>spring-boot-starter-parent</artifactId>  
    <version>1.3.3.RELEASE</version>  
</parent>  
<dependencies>  
    <dependency>  
        <groupId>org.springframework.boot</groupId>  
        <artifactId>spring-boot-starter-web</artifactId>  
    </dependency>  
</dependencies>  

SpringBoot default Tomcat is used as a web server

 

springboot default Tomcat container may be provided by embedded port, set the parameters, the maximum number of threads, etc.

server.port=8081
server.tomcat.max-threads=1000

However, you can not set the maximum number of connections, and the maximum number of connections directly affects the performance of Tomcat, how to adjust the maximum number of connections it?

Here are three ways

One:

  import org.apache.catalina.connector.Connector;  

import org.apache.coyote.http11.Http11NioProtocol;  
import org.springframework.boot.context.embedded.EmbeddedServletContainer;  
import org.springframework.boot.context.embedded.ServletContextInitializer;  
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;  
import org.springframework.stereotype.Component;  
  
@Component()  
public class MyEmbeddedServletContainerFactory extends TomcatEmbeddedServletContainerFactory  
{  
    public EmbeddedServletContainer getEmbeddedServletContainer(ServletContextInitializer... initializers)  
    {  
        //设置端口  
        this.setPort(8081);  
        return super.getEmbeddedServletContainer(initializers);  
    }  
      
    void customizeConnector protected (Connector Connector)   
    {   
        super.customizeConnector (Connector);   
        Http11NioProtocol = Protocol (Http11NioProtocol) connector.getProtocolHandler ();   
        // set the maximum number of connections   
        protocol.setMaxConnections (2000);   
        // set the maximum number of threads   
        protocol.setMaxThreads ( 2000);   
        protocol.setConnectionTimeout (30000);   
    }   
}  

 

two:

　import org.apache.catalina.connector.Connector;  

import org.apache.coyote.http11.Http11NioProtocol;  
import org.springframework.boot.context.embedded.EmbeddedServletContainerFactory;  
import org.springframework.boot.context.embedded.tomcat.TomcatConnectorCustomizer;  
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;  
import org.springframework.context.annotation.Bean;  
import org.springframework.context.annotation.Configuration;  
  
@Configuration  
public class WebServerConfiguration  
{  
    @Bean  
    public EmbeddedServletContainerFactory createEmbeddedServletContainerFactory()  
    {  
        TomcatEmbeddedServletContainerFactory tomcatFactory = new TomcatEmbeddedServletContainerFactory();  
        tomcatFactory.setPort(8081);  
        tomcatFactory.addConnectorCustomizers(new MyTomcatConnectorCustomizer());  
        return tomcatFactory;  
    }  
}  
class MyTomcatConnectorCustomizer implements TomcatConnectorCustomizer  
{  
    public void customize(Connector connector)  
    {  
        Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();  
        //设置最大连接数  
        protocol.setMaxConnections(2000);  
        //设置最大线程数  
        protocol.setMaxThreads(2000);  
        protocol.setConnectionTimeout(30000);  
    }  
}  

 

 

three:

import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;  
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;  
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;  
import org.springframework.context.annotation.Bean;  
import org.springframework.context.annotation.Configuration;  
  
@Configuration  
public class WebServerConfiguration  
{  
    @Bean  
    public EmbeddedServletContainerCustomizer createEmbeddedServletContainerCustomizer()  
    {  
        return new MyEmbeddedServletContainerCustomizer();  
    }  
}  
  
MyEmbeddedServletContainerCustomizer the implements EmbeddedServletContainerCustomizer class   
{   
    public void Customize (ConfigurableEmbeddedServletContainer Container)   
    {   
        TomcatEmbeddedServletContainerFactory tomcatFactory = (TomcatEmbeddedServletContainerFactory) Container;   
        tomcatFactory.setPort (8081);   
        // The following operation may refer to the above method   
    }   
}  

 

Finally, if found not in force, application.properties put inside some configuration on the configuration of Tomcat (server. *) All deleted, OK.