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How To Measure the Network Impact on PostgreSQL Performance
(www.percona.com)
A bit over elaborating some obvious points but nonetheless a good read on how to interpret ClientReads.
Monitoring databases and their performance used to be quite an intense and complicated effort. Luckily nowadays it's just intense when you export the metrics to Prometheus and have nice dashboards in Grafana.
Keep sharing such insightful links please!
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