# Seamless critical traffic migration with CoreDNS request rewrite feature

- **期号**: SRE Weekly Issue #358（2023-02-05）
- **作者**: lainra — Mercari
- **链接**: https://engineering.mercari.com/en/blog/entry/20221213-seamless-critical-traffic-migration-with-coredns-request-rewrite-feature/

## 简介

A new spin on changing the engines on a jet in flight: using DNS request/response rewriting to transition an application over without modification.