v0.10.0-rc.0 - 2026-03-31

[metalmatze]

Highlights

Performance Mode: Subquery-based SLO Calculations #1607

SLO burn rate calculations can now use subqueries instead of recording rules, significantly reducing the number of rules Prometheus needs to evaluate and store.

Alert Severity Overrides #1788

Alert severities for multi-burn-rate alerts are now configurable directly in the SLO spec, giving teams full control over how alerts are routed and prioritized.

Prometheus v3 Histogram Support (le normalization) #1619

Pyrra now correctly handles the le label normalization differences between Prometheus v2 and v3 native histograms, enabling seamless migration to Prometheus v3 for latency-based SLOs.

pyrra_url Annotations on Alerts #1522

All generated alerts now include a pyrra_url annotation that links directly to the relevant SLO page in the Pyrra UI, reducing time from alert to context.

UI Redesign: shadcn/ui + Tailwind CSS #1789

The UI has been migrated from Bootstrap to shadcn/ui and Tailwind CSS, laying the groundwork for new UI features going forward.

What's Changed

• fix: add correct sorting for 'lset' column by @mrtworo in fix: add correct sorting for 'lset' column #1615
• Migrate from Dependabot to Renovate by @metalmatze in Migrate from Dependabot to Renovate #1668
• Enable Renovate dependency dashboard by @metalmatze in Enable Renovate dependency dashboard #1672
• Fix Renovate release branch to only allow patch updates by @metalmatze in Fix Renovate release branch to only allow patch updates #1675
• Bump golangci to v2 by @tylerauerbeck in Bump golangci to v2 #1651
• Add Renovate support for Buf plugin dependencies by @metalmatze in Add Renovate support for Buf plugin dependencies #1677
• chore(ci): add Renovate support for Node.js matrix versions by @metalmatze in chore(ci): add Renovate support for Node.js matrix versions #1691
• fix: resolve Dockerfile linting warnings by @metalmatze in fix: resolve Dockerfile linting warnings #1720
• chore(config): migrate Renovate config by @renovate[bot] in chore(config): migrate Renovate config #1721
• fix: update operator to use go-kit logger to ensure standardized log config by @tylerauerbeck in fix: update operator to use go-kit logger to ensure standardized log config #1652
• Pass SLO annotations to ConfigMap by @RiRa12621 in Pass SLO annotations to ConfigMap #1737
• fix(controller): prevent invalid update after creating PrometheusRule/ConfigMap by @nikita-vanyasin in fix(controller): prevent invalid update after creating PrometheusRule/ConfigMap #1739
• readme: add link to auto-generated CRD API documentation by @metalmatze in readme: add link to auto-generated CRD API documentation #1757
• chore(ui): migrate from react-scripts to Vite by @metalmatze in chore(ui): migrate from react-scripts to Vite #1762
• refactor(ui): replace manual URL params with nuqs by @metalmatze in refactor(ui): replace manual URL params with nuqs #1764
• refactor(ui): remove search debounce, rely on nuqs by @metalmatze in refactor(ui): remove search debounce, rely on nuqs #1769
• fix(ci): restore node 22.x matrix entry alongside 24.x by @metalmatze in fix(ci): restore node 22.x matrix entry alongside 24.x #1772
• feat(ui): migrate to connect-es v2 and protobuf-es v2 by @metalmatze in feat(ui): migrate to connect-es v2 and protobuf-es v2 #1775
• feat: surface Pyrra version in CLI, logs, metrics, and UI by @metalmatze in feat: surface Pyrra version in CLI, logs, metrics, and UI #1778
• Enable alert severity overrides from config by @saswatamcode in Enable alert severity overrides from config #1788
• feat: support le normalization in prom 2 and 3 by @pharaujo in feat: support le normalization in prom 2 and 3 #1619
• Optimize SLO performance with subquery-based calculations by @metalmatze in Optimize SLO performance with subquery-based calculations #1607
• docs: add performance mode documentation by @metalmatze in docs: add performance mode documentation #1790
• feat(ui): migrate from Bootstrap to shadcn/ui with Tailwind CSS by @metalmatze in feat(ui): migrate from Bootstrap to shadcn/ui with Tailwind CSS #1789
• Add pyrra_url annotations by @metalmatze in Add pyrra_url annotations #1522
• feat(ui): add hover tooltips to uplot graphs by @metalmatze in feat(ui): add hover tooltips to uplot graphs #1796
• feat(ui): dynamic time range presets based on objective window by @metalmatze in feat(ui): dynamic time range presets based on objective window #1791

New Contributors

• @mrtworo made their first contribution in fix: add correct sorting for 'lset' column #1615
• @tylerauerbeck made their first contribution in Bump golangci to v2 #1651
• @nikita-vanyasin made their first contribution in fix(controller): prevent invalid update after creating PrometheusRule/ConfigMap #1739
• @pharaujo made their first contribution in feat: support le normalization in prom 2 and 3 #1619

Full Changelog: v0.9.5...v0.10.0-rc.0

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This discussion was created from the release v0.10.0-rc.0 - 2026-03-31.