JSON compression

Benchmark created by Aamir Afridi on

Description

Checking different JSON compression libs and techniques

Preparation HTML

<script src="//raw.github.com/msgpack/msgpack-javascript/master/msgpack.js">
</script>

<script src="//raw.github.com/nmrugg/LZMA-JS/master/src/lzma.js"></script>

<script src="//raw.github.com/nmrugg/LZMA-JS/master/src/lzma_worker.js"></script>

<script src="//raw.github.com/WebReflection/JSONH/master/js/jsonh.js"></script>

<script src="//raw.github.com/BonsaiDen/BiSON.js/master/lib/bison.js"></script>

Setup

var json = [{
      surname: 'Jones',
      age: 15,
      gender: 'Male',
      id: 1
    }, {
      age: 15,
      gender: 'Female',
      id: 2,
      surname: 'Adams'
    }, {
      age: 34,
      gender: 'Female',
      id: 3,
      firstname: 'Sally'
    }, {
      age: 22,
      gender: 'Male',
      location: 'London'
    }, {
      surname: 'Turley',
      age: 19,
      gender: 'Male',
      id: 8
    }, {
      age: 76,
      gender: 'Female',
      id: 2,
      surname: 'Tempest'
    }, {
      age: 34,
      gender: 'Female',
      id: 3,
      firstname: 'Sally'
    }, {
      age: 22,
      gender: 'Male',
      location: 'London'
    }];
    
    
    // create a new object and turn data into set of keys and their references
    
    
    function pack(items) {
      var data = {
        k: [],
        d: []
      };
      data.d = process(items, data.k, set);
      return data;
    }
    
    // grab the references and return the key values
    
    
    function unpack(items) {
      return process(items.d, items.k, get);
    }
    
    // loop through a list and run a function on its keys and values
    
    
    function process(items, keys, func) {
      var list = [],
          obj = {};
      for (var i = 0; i < items.length; ++i) {
        obj = {};
        for (var item in items[i]) {
          obj[func(item, keys)] = func(items[i][item], keys);
        }
        list.push(obj);
      }
      return list;
    }
    
    // set a key and return its index
    
    
    function set(item, items) {
      for (var i = 0; i < items.length; ++i) {
        if (item == items[i]) {
          return i;
        }
      }
      items.push(item);
      return items.length - 1;
    }
    
    // get a key value by its index
    
    
    function get(item, items) {
      return items[parseInt(item, 10)];
    }

Test runner

Ready to run.

Testing in
TestOps/sec
Kim's Method
pack(json);
ready
msgpack.js
msgpack.pack(json);
ready
LZMA
LZMA.compress(JSON.stringify(json), 1);
ready
hpack.js
JSONH.stringify(json);
ready
bison.js
BISON.encode(json)
ready
JSON.stringify
JSON.stringify(json)
ready

Revisions

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