git clone http://github.com/bnoguchi/node-hash-ring.git
cd node-hash-ring/src
node-waf configure build

var HashRing = require("./lib/hash_ring");

// Create a cluster of 3 servers weighted so that 127.0.0.2:8080 stores twice as many 
// keys as 127.0.0.1:8080, and 127.0.0.3:8080 stores 4x as many keys as 127.0.0.1:8080
// and 2x as many keys as 127.0.0.2:8080
var ring = new HashRing({"127.0.0.1:8080": 1, "127.0.0.2:8080": 2, "127.0.0.3:8080":4});
console.log(ring.getNode("users:102") ); // Should be 127.0.0.3:8080