The metrics package provides a simple metrics "Reporter" interface which allows the user to submit counters, gauges and timings (along with key/value tags).
Implementations
Prometheus (pull): will be first
Prometheus (push): certainly achievable
InfluxDB: could quite easily be done
Telegraf: almost identical to the InfluxDB implementation
Micro: Could we provide metrics over Micro's server interface?
Todo
Include a handler middleware which uses the Reporter interface to generate per-request level metrics