Refactoring

js/util/cache.js

@@ -1,3 +1,4 @@
+var crypto = require('crypto');
 
 function Cache() {
   this._store = {};
@@ -20,14 +21,9 @@ Cache.prototype._serialize = function(mixedKey) {
 };
 
 Cache.prototype._hash = function(str) {
-  var hash = 0, i, chr, len;
-  if (str.length === 0) return hash;
-  for (i = 0, len = str.length; i < len; i++) {
-    chr   = str.charCodeAt(i);
-    hash  = ((hash << 5) - hash) + chr;
-    hash |= 0; // Convert to 32bit integer
-  }
-  return hash;
+  var shasum = crypto.createHash('md5');
+  shasum.update(str);
+  return shasum.digest('hex');
 };
 
 module.exports = Cache;