beacon

A tiny subset of Google Analytics, in Go.

Beacon provides the familiar 1x1 transparent PNG web tracking image, but on your own servers and domain, and with a simple API. Data is stored in Redis using HyperLogLog for uniques. It is very fast, easily handling hundreds of concurrent requests on a free Heroku instance. See the Blitz.IO report.

API

var objectID = "post_" + 1234;
var image = new Image(1,1);
var url = "//beacon.herokuapp.com/" + objectID + ".png";
image.src = url;

See the results at https://beacon.herokuapp.com/api/v1/post_1234, which supports CORS.

{
  "visits": 14,
  "uniques": 4
}

You can migrate your existing visits and uniques from another platform by POSTing JSON to the Beacon API.

Demo

There is an invisible image above this line, though GitHub's Markdown proxies and anonymizes everything. The real URL is https://beacon.herokuapp.com/beacon_github_repo.png.

See the traffic we've tracked so far here: https://beacon.herokuapp.com/api/v1/beacon_github_repo

Thanks

This app uses the smallest possible 1x1 transparent PNG, thanks to the awesome work by Gareth Rees.