Remove/Clear/Expire Metric Labels from Prometheus Export

[LinuxDoku]

I have a few long running server processes which collect metrics with labels for resources which may get deleted over time. So after a few weeks/months running I have thousands of different labels with their last metered value in the Prometheus Metrics endpoint.

Is there a way to remove or expire labels or metrics which are not metered since a long time? E.g. prometheus-net supports expiring unchanged metrics after a specific TimeSpan. And there is a method to remove specific labels from a metric.