Iocaine is a defense mechanism against unwanted scrapers, sitting between upstream resources and the fronting reverse proxy. It is designed to significantly reduce the load caused by the relentless attack of the Crawlers (mostly originating from various AI companies) in a way that does not place undue burden on legit visitors. While iocaine does support presenting a proof-of-work challenge, that should be a last resort, and even if that path is taken, the challenge is inexpensive for the human visitor.
Originally, iocaine started as a garbage generator, a tarpit, a place where the reverse proxy routed unwanted visitors, so that they’d crawl an infinite maze of garbage. Since then, it grew into a more ambitious project, and includes a scripting engine that lets the iocaine-operator tell the software how to treat each incoming request. The idea remained similar, however: to waste crawler resources, while keeping costs down.
Unlike some similar tools, iocaine does not try to make the bad bots go away, it welcomes them, into an infinite maze of garbage. It does so, because the author observed that if the bots keep being served plausibly legit looking content, they will behave slightly better: they will not try to disguise themselves as much, and they’ll keep a steady, but not overwhelming crawling pace. Serving unwanted visitors junk also evoked warm, fuzzy feelings inside the author. He likes warm, fuzzy feelings. The garbage generator used in iocane has been tuned with this in mind, to make it cheap, pretty much on par with serving a static file.
This is free and open source software.
Website: git.madhouse-project.org/iocaine/iocaine
Support:
Developer: Gergely Nagy
License: MIT License

Iocaine is written in Rust. Learn Rust with our recommended free books and free tutorials.
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