Questions about APIM backend circuit breaker

Question

I've been experimenting with the preview version of circuit breakers using a backend in APIM. I'm able to get the trip to fire and start getting a 503, but it doesn't look like there's a way to resume sending requests other than waiting for the trip duration to expire. Is there a way to force requests to resume?

Another question I have is in regards to criteria. It works fine if I get a 5XX from the backend, but the backend I'm working with is a 3rd party that has a bad habit of returning a 200 and an error code in the body. Is there a way to increment the error count from the circuit breaker from within the APIM policy?

Thanks.

Answer 1

Sam McFarland Thanks for posting your question in Microsoft Q&A. Please find the answers below:

1. Currently, it is not possible to resume requests and have to wait for the trip duration to expire.
2. Incrementing error count via policy (or any other way) is not supported as well.

You may be already aware about CircuitBreakerRule and CircuitBreakerFailureCondition which supports configuring trip duration, interval, status code ranges, or error reasons etc. If you are in need of this feature for your business scenario, feel free to submit your idea via https://aka.ms/apimwish and others with similar interests can upvote it too. This feedback will help our product team prioritize and improve features.

I hope this helps and let me know if any questions.

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