# Upgrading GitHub from Rails 3.2 to 5.2

- **期号**: SRE Weekly Issue #141（2018-09-30）
- **作者**: Eileen Uchitelle — GitHub
- **链接**: https://githubengineering.com/upgrading-github-from-rails-3-2-to-5-2/

## 简介

GitHub used an innovative technique to avoid holding open a long-running code branch while upgrading their application to support rails 5.2.

## 正文

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