How to implement hot start in springboot

Hot start dependency

<dependency>
  <groupid>org.springframework.boot</groupid>
  <artifactid>spring-boot-devtools</artifactid>
</dependency>

idea will not be automatically compiled by default, you also need to set the idea to automatically compile

Settings>Compiler> Check Build project automatically

shift ctrl alt / Open the Registry. Check compiler.automake.allow.when.app.running

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