Project Lightning Talk: Prometheus 3.0 Speedrun
Lightningat KubeCon + CloudNativeCon Europe 2025 · on Tuesday, 2025-04-01· at 14:08· Platinum Suite | Level 3·
summary
Prometheus 3.0 is released with a new UI and dozens of feature flags flipped on by default; migration from 2.x is mostly non-breaking despite ~10,000 commits between 2.0 and 3.0 and ~1,000 commits already in 3.0. The TSDB rewrite and efficiency gains push sharding guidance from ~1M to 10 million active series. The release adds native histograms that convert classic buckets on the fly to cut storage and boost ingestion, a revamped remote_write spec, full UTF‑8 metric/name support, and tighter OpenTelemetry interoperability.
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