Dont take into account context canceled and rate limit errors in redis limiter. #309
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I realised the redis limiter takes into account context cancellation errors and bumps the rate limiter if it sees that error. With mettle workers, this wasn't a big issue, but now elan hits redis as well, clients may cancel their requests.
It seems if
Allow
returns an error, the client will report it to the Limiter as well usingReportResult
which I wasn't expecting, so I've added the rate limit error to the ones we exclude inReportResult
.This PR also includes some tests for the limiter to make sure it actually works :D