How We Built a Globally Distributed Mesh Network to Scale WebRTC

The text discusses the development of a globally distributed mesh network to scale WebRTC media servers. It explains how single-home architectures have limitations such as single points of failure, limited scalability, and increased latency. To overcome these challenges, the authors built a multi-home architecture that separates participant metadata from their media transport, synchronizes state using a message bus, and relays media through a custom FlatBuffers-based protocol. The resulting infrastructure is resilient to node, data center, and cloud failures, allowing for millions of real-time participants per session with less than 100ms latency.

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