In the previous sections, we configured an authentication server and client application, which grants access to the resources protected by the resource server. However, the whole authorization server configuration has been provided inside in-memory storage. Such a solution meets our needs during development, but it is not the most desirable approach in production mode. The target solution should store all the authentication credentials and tokens in the database. We may choose between many relational databases supported by Spring. In this case, I have decided to use MySQL.
So, the first step is to start the MySQL database locally. The most comfortable way to achieve this is through a Docker container. In addition ...
