v2.5.9 (#319)

Author: mensfeld

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Karafka Core Changelog
 
-## 2.5.9 (Unreleased)
+## 2.5.9 (2026-03-02)
 - [Enhancement] Optimize `StatisticsDecorator` to eliminate per-hash Array allocations by using `each_pair` with a per-call pending-writes buffer instead of `current.keys.each`, reducing allocations from tens of thousands to one per call at scale.
 - [Enhancement] Inline `StatisticsDecorator#append` and `#suffix_keys_for` into `#diff` to reduce method call overhead by ~96% (from ~915k to ~39k calls at 6400 partitions).
 - [Enhancement] Support `excluded_keys` option in `StatisticsDecorator` to skip decoration of unused librdkafka statistics subtrees (e.g. broker toppars, window stats), yielding ~28% additional speedup at scale.

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    karafka-core (2.5.8)
+    karafka-core (2.5.9)
       karafka-rdkafka (>= 0.20.0)
       logger (>= 1.6.0)
 

lib/karafka/core/version.rb

@@ -4,6 +4,6 @@ module Karafka
   module Core
     # Current Karafka::Core version
     # We follow the versioning schema of given Karafka version
-    VERSION = "2.5.8"
+    VERSION = "2.5.9"
   end
 end