Most efficient way to store and retrieve sockets in Node.js

Currently I am storing the actual socket object in an array in each process. I then store socket data in redis for all processes (workers) to access.

Is there a more performance/efficient way to store and retrieve sockets, or is this pretty much how this is done? I am concerned about performance when the sockets array potentially grows to over 200k objects.

var _ = require('underscore');

//Storing the socket in memory and saving the redis associated data
var server = this;
//This function adds this hash to redis and returns a unique id
server.gs.addSocketInfo({
     "userid": 0,
     "displayName": "Mike's iPhone",
     "connecttime": new Date().getTime()
  }, function(err, socketid) {
     socket.socketid = socketid;
     server.sockets.push(socket);
     doReady();
  });

//To retrieve the data and socket later
//function returns the socket data from redis
server.gs.getSocketInfo(socket.socketid, function(err, sinfo) {
    var socket = _.find(server.sockets, function(socket) {
       return socket.socketid === sinfo.socketid;   
    });
    if (socket)
       //Do something with the socket here...
});