Reel Friends: Building Social Discovery that Scales to Billions
Meta engineers reveal how a seemingly simple 'Friend Bubbles' feature required complex ML models and cross-platform behavioral insights, uncovering design principles for large-scale social recommendation systems.
Meta Engineering Blog · May 13, 2026
Labyrinth 1.1: Making End-to-End Encrypted Backups Even More Reliable
Meta releases Labyrinth 1.1, a protocol that improves the reliability of end-to-end encrypted message backups by ensuring messages are backed up as they are sent, solving recovery issues during device loss or switching.
Meta Engineering Blog · May 12, 2026