Cron manages time-triggered tasks, at a given time generates messages without content to the queue (Message Broker), which serve as a trigger for triggering some tasks of the system (data update, triggering calculations, etc.), mainly for picking up and processing by one of the workers in the Integration Engine.
Here you can find a git repository with complete codes of the module under the MIT license. This repository also serves as a primary source for the operating environment of the Golemio data platform. What we publish, we use ourselves.