Meta Fights Spam at Scale with Haskell
2024-12-22
Meta's Sigma system, a crucial weapon in the fight against spam and malware, underwent a two-year overhaul. The system was rewritten in Haskell, a less common choice for large-scale production systems, achieving over one million requests per second. The shift to Haskell leveraged its pure functional and strongly typed nature, and the Haxl framework enabled automatic batching and concurrent data fetching. Performance improvements of 20-30% over the previous FXL-based system were observed. The project also involved significant contributions back to the GHC compiler, resolving several bugs.
Development
Spam Filtering