uWebSockets: Truly scalable and high performing WebSockets for Node.js and C++11

µWS is one of the most lightweight, efficient & scalable WebSocket server implementations available. It features an easy-to-use, fully async object-oriented interface and scales to millions of connections using only a fraction of memory compared to the competition. License is zlib/libpng (very permissive & suits commercial applications).

  • Linux, OS X & Windows support.
  • Built-in load balancing and multi-core scalability.
  • SSL/TLS support & integrates with foreign HTTPS servers.
  • Permessage-deflate built-in.
  • Node.js binding exposed as the well-known ws interface.
  • Optional engine in projects like Socket.IO, Primus & SocketCluster.

https://github.com/alexhultman/uWebSockets

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