Tuning Autovacuum in PostgreSQL and Autovacuum Internals
Percona
AUGUST 10, 2018
In a best case scenario where read latency is 0 milliseconds, autovacuum can wake up and go for sleep 50 times (1000 milliseconds / 20 ms) because the delay between wake-ups needs to be 20 milliseconds. ProxySQL Query Cache can scale well and help your database achieve a significant performance boost. 1 second = 1000 milliseconds).
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