Prometheus Deep Dive: What’s New in v3.0 and Beyond
Talkat KubeCon + CloudNativeCon Europe 2025 · on Wednesday, 2025-04-02· at 14:30· Platinum Suite | Level 3 | Room 1-2·
summary
Prometheus 3.0 (released November last year, seven years after v2) ships a React+Mantine UI, a PromQL AST endpoint powering a visual query explanation, and a revamped query builder; it adds native histograms as a complex sample type and experimental heatmaps, and enables OTLP ingestion that auto-converts OTEL histograms. A new remote write v2 protocol uses string interning to cut bandwidth, plus an experimental Go library for senders/receivers. Breaking changes: range/subquery selectors are left-open and Prometheus no longer silently falls back to text format; a migration guide and compatibility flags exist.
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chapters (10)
- 0:00Prometheus v3 intro
- 2:09What is Prometheus
- 4:17New UI in v3
- 7:52Native histograms
- 10:41Remote write 2.0
- 16:02OpenTelemetry support
- 18:54Breaking changes in v3
- 21:03Prometheus governance
- 22:28Future work & contributions
- 24:22Q&A








