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VictoriaMetrics is an open-source time-series database (TSDB) written in Go, and I’ve had the pleasure of working on it for the past couple of years. TSDBs have stringent performance requirements, and building VictoriaMetrics has taught me a thing or two about optimization. In this blog post, I’ll share some of the performance tips I’ve learned during my time at VictoriaMetrics.
Starting around June this year, we upgraded our Grafana databases in Grafana Cloud from MySQL 5.7 to MySQL 8, due to MySQL 5.7 reaching end-of-life in October. This project involved tens of thousands of customer databases across dozens of MySQL database servers, multiple cloud providers, and many Kubernetes clusters.