Fighting spam with Haskell

One of our weapons in the fight against spam, malware, and other abuse on Facebook is a system called Sigma. Its job is to proactively identify malicious actions on Facebook, such as spam, phishing attacks, posting links to malware, etc. Bad content detected by Sigma is removed automatically so that it doesn’t show up in your News Feed. We recently completed a two-year-long major redesign of Sigma

[moccos_info]

"Hot-swapping of compiled code" "Loading and unloading code currently uses GHC's built-in runtime linker" ほえー

[kuenishi]

スパム検出のルールエンジンSigmaをHaskellで実装、運用した話。ホットコードローディング、Haxl, Stackageなど

[ruicc]

1Mreq/secさばいてるとかHot-swapping（thread生存時間が短いケース）とかリソース制限も非同期例外で簡単だとか開発のためにghci改良したとかstackage使ってるとか

[an_old_pencil]

facebook戦ってるらしい