refactor(571): Track module queue length with histogram #576
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coolreader18
approved these changes
Nov 20, 2023
| let pool_inner = self.inner.clone(); | ||
| let waiter_guard = self.waiter_gauge.inc(context); | ||
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| let queue_len = WORKER_METRICS.instance_queue_length.with_label_values( |
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this is fine, I guess. it just makes it less easy to pull out/appraise as its own data structure. I might take a look at making this much simpler while still keeping LendingPool generic.
joshua-spacetime
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Description of Changes
Closes #571.
Before this patch we could only observe queue length values when prometheus sampled the metric.
This is because we were using a gauge to track the metric.
Now we are using a histogram and therefore we can observe the metric whenever it changes, regardless of sampling rate.
API and ABI breaking changes
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