* Only check latencies once every 10 seconds with `routeByLatency`
`routeByLatency` currently checks latencies any time a server returns
a MOVED or READONLY reply. When a shard is down, the ClusterClient
chooses to issue the request to a random server, which returns a MOVED
reply. This causes a state refresh and a latency update on all servers.
This can lead to significant ping load to clusters with a large number
of clients.
This introduces logic to ping only once every 10 seconds, only
performing a latency update on a node during the `GC` function if the
latency was set later than 10 seconds ago.
Fixes https://github.com/redis/go-redis/issues/2782
* use UnixNano instead of Unix for better precision
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Co-authored-by: ofekshenawa <104765379+ofekshenawa@users.noreply.github.com>
Justin