Database operations
In the previous chapters, we explained that you can have single or multiple databases for your application. This is one of the advantages of microservices; you can scale a single microservice when you realize that it is getting a big load by dividing the database into a single database for a specific microservice.
For our example, we will create a single database for the secrets microservice. For storage software, we decided to use Percona (a MySQL fork), but feel free to use any database you like.
To create a database container in Docker is very easy. We only need to edit our docker-compose.yml file, and change the links section of the microservice_secret_fpm service with the following:
links: - autodiscovery - microservice_secret_database ...
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