Spring第一个请求很慢 [英] Spring first request very slow

问题描述

我在 Spring Boot 中有应用程序.用内嵌的tomcat初始化Spring Boot后，第一次响应很慢.我该如何解决?spring boot 有任何预热命令/模式吗?我也在考虑与数据库的连接，我想知道连接数据库，可能在第一次请求期间 spring 与 Postgres 连接.

I have application in Spring Boot. After initialization of Spring Boot with embeded tomcat, the first response is very slow. How can I fix it? Has spring boot any warmup command/mode? I am thinking too about connection with database and I am wondering about connection database, probably spring connects with Postgres during first request.

推荐答案

你可以使用 ApplicationRunner 或 CommandlineRunner 在启动时运行一些东西:

You could either use ApplicationRunner or CommandlineRunner to run something on startup:

https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-command-line-runner

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