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Comment on Ask HN: What useful internal tools or libraries have you built in your company?

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Python 3+:

Blue - A dead simple event based workflow execution framework.

I always find it easier to model systems from an event driven perspective. Especially when you have to move fast and evolve unpredictably. I wanted a framework anyone could learn to use within 5-10 minutes. At the same time it should be able to solve all kinds of use cases that require event based coordination between tasks in a distributed environment.

Works well for us for simple use cases (eg. data processing workflows) and complex ones (eg. our entire retail order fulfilment system).

Is this similar to Prefect? I'm interested on using those kind of system, I think it would be really easy to mock up business processes on these kind of tools quickly before building a more robust solution.

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