In the in-memory deployment the Workflow Server sends pending and finished processes to Studio Server, where they are persisted in the Studio Server's in-memory persistence layer. To connect to the Studio Server, the Workflow Server needs a Studio Server connection and an authorized user.

The recommended way to enable the in-memory configuration for Workflow Server, is to activate the in-memory Spring profile. This will load the in-memory properties from the application-in-memory.properties. For details, see the official Spring Boot documentation.

For starting the Workflow Server locally via an IDE or the Spring Boot Maven plugin, the Spring profiles to be activated are most likely dev,local,in-memory in that order.