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This article mainly explains "springboot how to use Undertow server", the content of the article is simple and clear, easy to learn and understand, now please follow the editor's ideas slowly in depth, together to study and learn "springboot how to use Undertow server"!

Display declaration sweep package scope:

That is, instead of using @ SpringBootApplication to scan the package by default, use the ComponentScan annotation to display the declaration to scan the package scope.

@ ComponentScan (basePackages= {"com.xxx.controller", "com.xxx.service"})

The reason is that @ SpringBootApplication scans packages by default, scanning all the subpackages under the startup class. In the actual development scenario, there are many packages that do not need to be scanned, so using the default sweep package will scan a lot of packages that do not need to be scanned in the first place.

When verifying whether there is an optimization effect, if you write your own demo, you cannot verify it, because there are too few packages and classes, so you can verify it with the company's actual project, and it will start much faster.

SpringBoot operation optimization

Use the Undertow server:

By default, SpringBoot uses Tomcat as the embedded servlet container. You can switch the web server to Undertow to improve application performance.

Undertow is a flexible, high-performance web server developed with Java, providing both blocking and NIO-based non-blocking mechanisms. Undertow is Red Hat's open source product and Wildfly's default web server.

Too much is no longer introduced, Baidu knows more.

First remove Tomcat

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

Add Undertow dependency

Org.springframework.boot spring-boot-starter-undertow

Comparison of Tomcat and Undertow throughput (actual test on my computer)

SpringBoot JVM parameter tuning

Set heap parameters according to the memory size of the server.

-Xms: sets the initialization size of the Java stack

-Xmx: sets the maximum java heap size

Instance parameter-XX:+PrintGCDetails-Xmx32M-Xms1M

Local project tuning

External operation tuning

Java-server-Xms32m-Xmx32m-jar springboot_v2.jar thank you for reading, the above is the content of "springboot how to use Undertow server". After the study of this article, I believe you have a deeper understanding of how springboot uses Undertow server, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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