Node.js multiple redis clients. reference: http://stackoverflow.com/questions/13971145/node-redis-redis-clients

redis.js

module.exports = {
  DB1: redis.createClient(),
  DB2: redis.createClient(),
  DB3: redis.createClient(),
  init: function(next) {
    var select = redis.RedisClient.prototype.select;
    require('async').parallel([
      select.bind(this.DB1, 1),
      select.bind(this.DB2, 2),
      select.bind(this.DB3, 3)
    ], next);
  }
};

server.js

require('./redis').init(function(err) {
  if (err) throw err;
});