The Architecture of Database per Service

The rule is set: each service owns its data and hides it behind an API. This lesson covers the choices inside that rule. You will pick an isolation level, a database type for each service, and a plan for small lookup data that every service needs.

Three Levels of Isolation

You can apply the pattern at three levels. They run from weakest to strongest.

Level one: private tables or a private schema in one shared database server. A schema is a named group of tables inside one database. Each service gets its own schema, and its own login that can only see that schema