[alexmolas]

Does it keep track of the status of each task?

Imagine I run an app with three processes A, B, C. A runs perfectly, but B fails and halts the app. If I start the app again, is it going to know that A has been already executed? Or is A going to be executed again?

[Miksus]

Yep it does, the main process and thread is responsible of communicating with the logs (see the other comment in which I explained the logging mechanism). If you run a task in subprocess, the logs are relayed via queue to the main process and the main process logs it to avoid conflicts.

There are also an option to force reading the status always from the logs. I'll provide later how's that changed but by default there is some optimization to avoid unnecessary reads from disk as often there is only one scheduler reading/writing to the log data store.

The logs are stored in memory by default but this can be changed to any data store (if you are willing to expand Red Bird). At the moment CSV, SQL and MongoDB are supported + the in-memory.