Performance gains in Prometheus metrics collection using Rust and Apache Arrow

The author argues that shifting Prometheus metrics collection from Go to Rust using Apache Arrow and OpenTelemetry otel-arrow drastically reduces RAM usage and CPU consumption. Early testing showed working set size dropped from approximately 1 GiB to about 30 MiB while CPU usage decreased significantly. The community is now starting a new ecosystem-wide special interest group on CNCF Slack to explore these columnar developments further. Open article →