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Simon Detheridge 07e4eb4dfb Add mechanism to expire old prometheus metrics ... Adds a wrapper around the prometheus client, which keeps track of the last time a metrics was accessed, and removes old ones once they have not been accessed for a period of time.		2019-10-23 17:07:45 +01:00
libraries/metrics	Add mechanism to expire old prometheus metrics	2019-10-23 17:07:45 +01:00