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# 发布小 diff
- **期号**: SRE Weekly Issue #60(2017-02-20)
- **作者**: 声明:文中提到我的雇主 Heroku。感谢 Devops Weekly 推荐本篇。
- **链接**: https://blog.skyliner.io/ship-small-diffs-741308bec0d1#.xeevfm77f
## 简介
> 每一行代码都有一定概率藏着未被发现的缺陷,最终在线上暴露出来。流程可以改变这个概率,但无法把它降为零。大 diff 包含大量代码行,因此在面对真实数据和真实流量时,出问题的概率自然更高。
## 正文
> ⚠️ 抓取失败:URLError: _ssl.c:1015: The handshake operation timed out