this post was submitted on 29 Apr 2025
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How do you tell scrapers from regular traffic?
Most often because they don't download any of the css of external js files from the pages they scrape. But there are a lot of other patterns you can detect once you have their traffic logs loaded in a time series database. I used an ELK stack back in the day.
That sounds like a lot of effort. Are there any tools that get like 80% of the way there? Like something I could plug into Caddy, nginx, or haproxy?
My experience is with systems that handle nearly 1000 pageviews per second. We did use a spread of haproxy servers to handle routing and SNI, but they were being fed offender lists by external analysis tools (built in-house).