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by xofer
1402 days ago
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Deleting a record causes requests for that record to be negatively cached. The negative cache TTL[1] is often set to 1 day. So, deleting and immediately recreating a record can take your site offline for days. (Source: I made this mistake when changing a Route53 record for a subdomain that was getting about 70Krps. Luckily it was our source code making the requests, so we could change it, but that took an hours or so to roll out.) [1]: https://www.rfc-editor.org/rfc/rfc2308 |
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