Rate Limiting an aggressive bot in Nginx
John Locke
Tue, 08/22/2023 - 10:58
High load isn't necessarily an emergency, but it may be a heads-up before a site noticeably slows down. Sometimes there are weird spikes that just go away, but sometimes this is an indication of a Denial of Service.
Rate Limiting
NGinx has rate limiting that can be used to handle cases where a slow URL is targeted. Today one of our sites had high load alerts. Here's how I handled it:
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