bitcrunch

redis backed analytics for node

bitcrunch

Redis analytics for node.js.

Note: not ready for production use.

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(errtotal){
  console.log('%s won and lost', total);
});
 
// won OR lost 
 
won
.or(lost)
.count(function(errtotal){
  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(errresult){
  console.log('result = %s', result);
});
  • 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.

MIT