Release v6.2.9 · balena-io/sshproxy

Update module github.com/prometheus/client_golang to v1.21.1

[BUGFIX] prometheus: Revert of Inc, Add and Observe cumulative metric CAS optimizations (#1661), causing regressions on low concurrency cases #1757
[BUGFIX] prometheus: Fix GOOS=ios build, broken due to process_collector_* wrong build tags. #1758
-All commits
Revert "exponential backoff for CAS operations on floats" and cut 1.21.1 by @bwplotka in https://github.com/prometheus/client_golang/pull/1757
Fix ios build for 1.21.1 by @bwplotka in https://github.com/prometheus/client_golang/pull/1758

prometheus/client_golang (github.com/prometheus/client_golang)

This release addresses a major performance regression introduced in #1661 -- thanks to all who reported this quickly:
@chlunde, @dethi, @aaronbee @tsuna 💪🏽. This patch release also fixes the iOS build.

We will be hardening the release process even further (#1759, #1761) to prevent this in future, sorry for the inconvenience!

The high concurrency optimization is planned to be eventually reintroduced, however in a much safer manner, potentially in a separate API.

[BUGFIX] prometheus: Revert of Inc, Add and Observe cumulative metric CAS optimizations (#1661), causing regressions on low concurrency cases #1757
[BUGFIX] prometheus: Fix GOOS=ios build, broken due to process_collector_* wrong build tags. #1758

All commits

Full Changelog: prometheus/client_golang@v1.21.0...v1.21.1

2e50f60 (Update module github.com/prometheus/client_golang to v1.21.1, 2025-03-04)