In newer version of Spring is more recommended use .yaml for properties than .properties. Properties written in .yaml format are easier to read and update.
Nov 20, 2019
Vault secures, stores, and tightly controls access to tokens, passwords, certificates, API keys, and other secrets in modern computing. Vault is primarily used in production environments to manage secrets. Vault is a complex system that has many different pieces. There is a clear separation of components that are inside or outside of the security barrier. Only the storage backend and the HTTP API are outside, all other components are inside the barrier
Apr 16, 2017