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Merged
merged 2 commits into from
Mar 7, 2025
Merged

Cut 1.22.0-rc.0 #1768

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c7bbfa4
Initialize the release process
kakkoyun Mar 7, 2025
e9a42c1
Update the changelog
kakkoyun Mar 7, 2025
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22 changes: 22 additions & 0 deletions CHANGELOG.md
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## Unreleased

## 1.22.0-rc.0 / 2025-03-05

:warning: This release contains potential breaking change if you use experimental `zstd` support introduce in #1496 :warning:

Experimental support for `zstd` on scrape was added, controlled by the request `Accept-Encoding` header.
It was enabled by default since version 1.20, but now you need to add a blank import to enable it.
The decision to make it opt-in by default was originally made because the Go standard library was expected to have default zstd support added soon,
https://github.com/golang/go/issues/62513 however, the work took longer than anticipated and it will be postponed to upcoming major Go versions.


e.g.:
> ```go
> import (
> _ "github.com/prometheus/client_golang/prometheus/promhttp/zstd"
> )
> ```

* [FEATURE] prometheus: Add new CollectorFunc utility #1724
* [CHANGE] Minimum required Go version is now 1.22 (we also test client_golang against latest go version - 1.24) #1738
* [FEATURE] api: `WithLookbackDelta` and `WithStats` options have been added to API client. #1743
* [CHANGE] :warning: promhttp: Isolate zstd support and klauspost/compress library use to promhttp/zstd package. #1765

## 1.21.1 / 2025-03-04

* [BUGFIX] prometheus: Revert of `Inc`, `Add` and `Observe` cumulative metric CAS optimizations (#1661), causing regressions on low contention cases.
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2 changes: 1 addition & 1 deletion VERSION
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1.21.1
1.22.0-rc.0
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