SFU
SFU (Selective Forwarding Unit) is a media routing architecture used in real-time communication systems, particularly in WebRTC applications. It selectively forwards audio and video streams from participants to others in a conference, optimizing bandwidth by avoiding unnecessary duplication of data. This approach is more scalable than the traditional MCU (Multipoint Control Unit) as it reduces server-side processing load.
Developers should learn about SFU when building scalable video conferencing, live streaming, or multiplayer gaming applications that require efficient multi-party communication. It's essential for optimizing network performance in scenarios with many participants, as it minimizes latency and bandwidth usage compared to peer-to-peer mesh networks or MCU-based solutions.