Enable Prometheus /metrics endpoint #196
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fredrikekre
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This patch instruments the PkgServer code using Prometheus.jl [1] and exposes the following metrics on the new `GET /metrics` endpoint: - Histogram of request times labeled by endpoint (buckets will have to be adjusted once there is some data from live servers). - Gauge for number of concurrent requests - Counter with registry updates - Counters for bytes sent/received - Counters for currently cached resources (number of files and number of bytes) labeled by resource type - Metrics about the Julia process (`Prometheus.ProcessCollector`) - Metrics about memory allocations and GC (`Prometheus.GCCollector`) [1]: https://github.com/fredrikekre/Prometheus.jl
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This patch instruments the PkgServer code using Prometheus.jl 1 and exposes the following metrics on the new
GET /metricsendpoint:Prometheus.ProcessCollector)Prometheus.GCCollector)