Config file processing in Spring Boot 2.4

Spring Boot 2.4.0.M2 has just been released, and it brings with it some interesting changes to the way that application.properties and application.yml files are loaded. If your applications use the fairly typical setup of only using a single application.properties or application.yml file, then you’ll probably not notice any difference. If, however, you have applications that use more complex setup

[yujiorama]

override の仕組みやプロファイルのグループ化の仕組み、階層化の仕組みが増えそう