How to set worker relationships?

Workers inherit the relationships from the app in which they are created. They will have access to all the same services as their parent app. Any top-level definitions, including relationships, are inherited by every worker, unless overridden explicitly. You can configure workers relationships manually by adding relationships key in the .platform.app.yaml file.

name: app

type: python:3.5

workers:

    mail:
        commands:
            start: |
                python mail-worker.py                
        disk: 256
        mounts:
            test:
                source: local
                source_path: test
        relationships:
            database: 'mysqldb:mysql'

For further details on how to configure workers, relationships and customize them more, please check our Docs.