A mini Node.js module to generate short, alpha-number, undecryptable and unique hash id from a long string (utf8 format). Use shorthash when you want to encrypt a string like a movie name or a people name to a short, unique and url friendly id. so with shorthash, you can build an id-string map. instead of quering the id from db each time, you just calculate the id out on the fly. it's quite convenient in many conditions if you want to build a site like (书本画)[http://shubenhua.com], a books search engine in China.
var sh = require("shorthash");
console.log(sh.unique('foobar@example.com'));
// you will get: Z1bL2tE
console.log(sh.unique('my name is really big big and big...'));
// you will get: Z1TirWS
console.log(sh.unique('万里长城永不倒。。。'));
// you will get: 2r6EFF
console.log(sh.unique('和平'));
// you will get: 33NM