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Nenad
Asked: 2011-11-30 08:36:16 +0800 CST

250k connections for comet with node.js

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How to implement node.js to be able to handle 250k connections as comet server (client side we use socket.io)?

Would the use of nginx as proxy/loadbalancer be the right solution? Or will HA-Proxy be the better way? Has anyone real world experience with 100k+ connections and can share his setup? Would a setup like this be the right one (Quad core CPU per server -> start 4 Instances of node.js per Server?):

  nginx (as proxy / load balancing server)
        /               |          \
       /                |           \
      /                 |            \
     /                  |             \
node server #1  node server #2  node server #3
4 instances     4 instances     4 instances
nginx high-load node.js haproxy

1 Answers

  1. vanilla nginx doesn't support HTTP/1.1 keepalive to the upstream (backend) servers, which breaks socket.io :( If you're willing to compile it yourself, you may have better luck --> http://www.letseehere.com/reverse-proxy-web-sockets

    Though at that scale I wonder if it would be smoother to skip the web server layer, routing the TCP connections directly...

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