bitcrunch

redis backed analytics for node

npm install bitcrunch
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12 downloads in the last month

bitcrunch

Redis analytics for node.js.

Note: not ready for production use.

Bitmaps

Hashes and maps input values to an internal linear identifier via redis-identity. You can then ask the bitmap various questions ranging some simple membership to more complex bitwise operations.

Inspired by: fast-easy-realtime-metrics-using-redis-bitmaps

Basic logic

var bitcrunch = require('bitcrunch');

var won = bitcrunch('won');
var lost = bitcrunch('lost');

// winners

won
.add('a+foobar@email.com')
.add('b+foobar@email.com')
.add('c+foobar@email.com');

// losers

lost
.add('c+foobar@email.com')
.add('d+foobar@email.com');


// won AND lost

won
.and(lost)
.count(function(err, total){
  console.log('%s won and lost', total);
});

// won OR lost

won
.or(lost)
.count(function(err, total){
  console.log('%s won or lost', total);
});

Membership

var bitcrunch = require('bitcrunch');

var likes = bitcrunch('likes')
.add('js')
.add('lua')
.add('redis');

likes.includes('js', function(err, result){
  console.log('result = %s', result);
});

todo

  • command-queue / promises for chaining (that works).
  • complex logic (and/or/and), kinda requires the promises.
  • do we really need to hash values?.
  • NOT.
  • XOR.

attribution

License

MIT

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