15 lines
659 B
Markdown
15 lines
659 B
Markdown
# Mitigating replication lag and reducing read load with freno
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- **期号**: SRE Weekly Issue #93（2017-10-15）
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- **作者**: —
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- **链接**: https://githubengineering.com/mitigating-replication-lag-and-reducing-read-load-with-freno/
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## 简介
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GitHub ensures low MySQL replication lag by rate-limiting expensive batch-processing queries based on replica lag. Before freno, this logic resided in each client, with multiple implementations in different languages. Freno (which is open source) centralizes the replica lag polling and query rate-limiting decisions into a queryable service.
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## 正文
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