How to configure and switch Tomcat with SpringBoot

1. Basic introduction

WebServer supported by SpringBoot: Tomcat, Jetty, or Undertow

server:

#Configure port
port: 9999
#Configure tomcat
tomcat:
threads:
#Indicates the maximum of worker threads (the bank has 10 counters, each counter handles 200 requests 10*200=maximum number of connections), the default is 200
max: 10
#The default minimum worker thread is 10
min- spare: 5
#The thread started by tomcat reaches the maximum value, and the number of queued requests is accepted, the default is 100
accept-count: 200
#Maximum number of connections, number of concurrency
max-connections: 2000
#The timeout for establishing a connection, the default is 20 seconds, in milliseconds
connection-timeout: 10000

/**
 * 通过类来配置Tomcat
 */
@Component
public class CustomizationBean implements WebServerFactoryCustomizer {
    @Override
    public void customize(ConfigurableServletWebServerFactory server) {
        server.setPort(10000); //我们设置了server的端口为10000
    }
}

   org.springframework.boot
   spring-boot-starter-web
   
      
         org.springframework.boot
         spring-boot-starter-tomcat
      
   

   org.springframework.boot
   spring-boot-starter-undertow

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