---
title: Go-SDK - 2.2.1
slug: feature-experimentation/release-notes/go-sdk-2-2-1
docTags: 
createdAt: 2026-07-20T15:45:45.883Z
---

## \[2.2.1] - October 24, 2025

[#221---october-24-2025](docId:2fx4LspLVxYVXdgKbxtW5)

### Bug Fixes

[#bug-fixes](docId:2fx4LspLVxYVXdgKbxtW5)

- **CMAB Cache Size Alignment**: Increased CMAB default cache size from 1000 to 10000 to align with ODP segments cache size for consistency ([#425](https://github.com/optimizely/go-sdk/pull/425))
- **Bucketing Precision**: Fixed float32 precision error that caused incorrect bucketing for specific users ([#423](https://github.com/optimizely/go-sdk/pull/423))
- **EU Region Support**: Fixed region parameter handling for EU data hosting ([#421](https://github.com/optimizely/go-sdk/pull/421))

[https://github.com/optimizely/go-sdk/releases/tag/v2.2.1](https://github.com/optimizely/go-sdk/releases/tag/v2.2.1)