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AI / Apache Burr Interview questions

When should you write a custom hook instead of relying on with_tracker?

with_tracker(...) already gives you Burr’s own step-by-step logging and the Burr UI dashboard for free, so for standard debugging and monitoring within Burr’s own tooling, it is usually all you need.

Write a custom hook when you need to route information somewhere the tracker doesn’t reach: pushing traces into an external system like Datadog, synchronizing state to a separate database on every step, adding an artificial delay so a demo UI can render each step visibly, or putting results on a queue for a downstream monitoring pipeline. Because hooks and the tracker are independent, additive constructs, you can register a custom hook alongside with_tracker(...) rather than choosing one or the other.

A good rule of thumb: reach for with_tracker first, and only add a hook when you have a concrete integration or side effect the tracker’s built-in logging can’t produce.

A good reason to write a custom hook rather than relying only on with_tracker is:
Custom hooks and with_tracker() can be used:

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