Browse past weeks of engineering reads.
Ensuring end-to-end encrypted messages and conversation history survive device loss, device switches, and extended offline periods without compromising encryption guarantees.
Meta needed to migrate their legacy data ingestion system to a new architecture while maintaining reliability and consistency for real-time social graph snapshots at massive scale.
How to enable end-to-end encrypted backups for messaging applications while ensuring recovery codes remain inaccessible to Meta, cloud providers, and other third parties.
Meta needed to handle massive-scale media processing (encoding, transcoding, filtering) across its family of apps, requiring efficient orchestration of complex audio/video pipelines using FFmpeg at an unprecedented scale.
Meta's large-scale infrastructure relies on jemalloc for memory allocation, but the codebase had accumulated maintenance burden and needed modernization to keep pace with evolving hardware and workload demands.