Goworker is a Go-based background worker that runs 10 to 100,000* times faster than Ruby-based workers. Goworker is compatible with Resque, so you can push your jobs with Rails and Resque, and consume them with Go in the background.
Machine learning is the study of algorithms that learn from data and experience. It is applied in a vast variety of application areas, from medicine to advertising, from military to pedestrian. Any area in which you need to make sense of data is a potential consumer of machine learning.
CLNDR is a jQuery plugin for creating calendars. Unlike most calendar plugins, this one doesn't generate markup. Instead you provide an Underscore.js HTML template and in return CLNDR gives you a wealth of data to use within it
Pixel tracking is all over the internet. There are a million services you can pay to do this for you today, and a million more will spin up tomorrow. This is how you can do it yourself using the tools you already have. Of course, the data science to make use of it will be left to you.
One of the more interesting developments in web standards lately is the Indexed Database (IndexedDB for short) specification. In this tutorial I'll be explaining this feature and hopefully giving you some inspiration to use this powerful feature yourself.