tifayuki e3c37a46e2 Add Prometheus Metrics ... at the first iteration, only the following metrics are collected: - HTTP metrics of each API endpoint - cache counter for request/hit/miss - histogram of storage actions, including: GetContent, PutContent, Stat, List, Move, and Delete Signed-off-by: tifayuki <tifayuki@gmail.com>		2018-02-09 14:27:51 -08:00
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util	Add Prometheus Metrics	2018-02-09 14:27:51 -08:00