Package Exports

forgetsy-js

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Readme

forgetsy-js

Nodejs fork of Forgetsy temporal trending library. This is still work in progress and needs proper testing and still undergoing heavy development. If you discover an issue, please open a ticket to have it resolved or fork and fix :-) The project use Redis as the backend.

Please fork and make it better.

Installation

npm install forgetsy-js

Usage

var Delta = require('forgetsy-js').Delta;

Define delta to create

var dist = 'shares';
var bin = 'my-content-id';

Create, increment and fetch the trends

// @todo - integrate convenient date lib
function getDays(days) {
  return (new Date().getTime() + ((60 * 60 * 24 * 1000) * days));
}

// increment an index -- do this on a view/share/follow, for example
function increment(cb) {
  Delta.get(dist, function(e, delta) {
    if (e) return console.log('Error fetching delta', e);
    // increment a new bin
    delta.incr({
      bin: bin
      ,by: 1
    }, function(e) {
      if (e) return console.log('Error incrementing bin', e);
      cb();
    });
  });
}

// create a new delta
function create(cb) {
  Delta.create({
    name: dist
    ,time: getDays(14)
  }, function(e, delta) {
    if (e) return console.log('Error creating delta', e);

    increment(cb);
  });
}

// fetch all trending items
function fetchAll() {
  Delta.get(dist, function(e, delta) {
    if (e) return console.log('Delta does not exists', e);

    delta.fetch({}, function(e, trends) {
      if (e) return console.log('Error fetching all trends in ' + dist);
      process.exit()
    });
  });
}

function fetchOne() {
  Delta.get(dist, function(e, delta) {
    if (e) return console.log('Delta does not exists', e);

    delta.fetch({bin: bin}, function(e, trends) {
      if (e) return console.log('Error fetching a single bin in ' + dist);
      console.log('Trends', trends);
    });
  });
}

create(fetchAll);

// fetches a single index
//fetchOne();

Example output

[
 {'item': 'one': 'score': 0.999999999997154}
,{'item': 'two': 'score': 0.9999999999939523}
]

Testing

@Todo - Implement proper testing framework

npm test

Simple Benchmark

Iterations: 10,000

Operations: create, increment, fetch

real 0m9.556s
user 0m5.831s
sys 0m3.689s