Springboot for graceful shutdown

Recently, the Springboot project was used in the company, and it was found that the Java-jar command on Linux is very safe to run, but when we need to close it? Does the login server kill thread???

Found the relevant documents on the Internet: https://www.cnblogs.com/lobo/p/5657684.html This article explains in more detail two ways to close springboot projects.

However, after using the above method, it is found that there are some strange anomalies when the springboot is closed.

What about this???

Finally, in the Java explaining public number found an article: https://mp.weixin.qq.com/s/7qNB7mq-xaDBxxxHrCu0Wg

This article describes the logical shutdown process when using Tomcat and Undertow as a server .....

Springboot for graceful shutdown