On Fri, Oct 13 2017, Yaguang Tang wrote: > I see the latest Gnocchi support using Redis as a storage backend, I am > testing performance of Redis and Ceph, it seems using Redis as storage > backend we can achieve more realtime metric > data, gnocchi status shows there is always few metric to process. > > Is Redis a recommend storage backend ?
Redis is recommended as an incoming measures backend, not really as a storage – though it really depends on the size of your installation. Up until 4.0 version, Gnocchi process metrics every $metricd.metric_processing_delay seconds. With version 4.1 (to be released), the Redis incoming driver has a more realtime processing delay which avoids having to poll for incoming data. -- Julien Danjou // Free Software hacker // https://julien.danjou.info
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