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July 14, 2013 Memory Management in JS Web Apps Memory management is a fairly crucial part to building JavaScript web applications, and just because the language has a garbage collector it doesn’t absolve you from all duties. Take your classic controller (or view in Backbone land). In its constructor it may bind to some model events, perhaps re-rendering itself when a record changes. You’ll need to

There's a lot of fear, uncertainty and doubt when it comes to stock options, and I'd like to try and clear some of that up today. As an engineer, you may be more interested in getting on with your job than compensation. However, if you're working at a fast growing startup, with a little luck and the right planning you can walk away from a liquidity event with a significant amount of money. On the

JavaScript and search engines have always had a tricky relationship, and SEO is often used as an argument against single page applications. I'm aiming to put some of those misconceptions to rest in this article and show you that it's perfectly possible to create a pure JavaScript web application and still have good SEO. To demonstrate, take a look at the search results for Monocle, a single page w

July 19, 2013 How yield will transform Node.js Node v0.11.2 was released recently, and with it support for v8 generators. Generators can be hard to grasp, but essentially they’re decorated functions that you can execute multiple times and resume execution at different points inside the function. What this means in practice is that we can get rid of the callback hell that has plagued node applicati

July 10, 2013 Speed up Heroku deploys While building Monocle, I noticed that deploys to Heroku were taking absolutely ages; specifically the asset pre-compilation stage. I tried a variety of things, including removing a bunch of CoffeeScript files, but deploys were still taking in the order of several minutes. After talking to Josh, it seems the solution is a simple one. Simply enable Memcache cac

I've been working on a project called Monocle these past few weeks, and it's time to show it to the world. Monocle is an experiment in creating a friendly and intelligent community around sharing quality content with a focus on technology, startups and frankly anything that appeals to the inquisitive mind. PhilosophyOver the next few weeks I'm going to be writing about the more interesting aspects

March 12, 2013 Abba - JavaScript a/b testing Abba is a self-hosted a/b testing framework built to help improve conversion rates on your site. Tuning signup and payment forms can have huge effects on your business, and it’s a good idea to supplement design and copy changes with data on how differences actually effect conversion. We built this tool for internal use at Stripe, and today we’re open-so

January 3, 2013 All you need to know about CSS Transitions CSS3 transitions bring simple and elegant animations to web applications, but there’s a lot more to the spec than first meets the eye. In this post I’m going to delve into some of the more complicated parts of CSS transitions, from chaining and events to hardware acceleration and animation functions. Letting the browser control animations

November 28, 2012 5 APIs that will transform the Web in 2013 It’s incredibly exciting to see how the Web is evolving, and 2013 has a lot more in store. Over the next year, there are a number of technologies coming down the pipeline that have the potential to radically transform how we use and develop for the Web. CSS Custom Filters # CSS filters are already in Chrome and Safari, and allow advanced

A programming library's main mission should be to make itself redundant, and with that in mind that I'm announcing the deprecation of Juggernaut. Juggernaut was one of the first solutions to pushing data in realtime to clients; at first it was using Flash XMLSockets, and then it moved to WebSockets when they were widely available. This sort of technology has lots of interesting applications, such

May 14, 2012 Chrome supports TCP & UDP Sockets Traditionally browsers haven’t been able to make raw socket requests to arbitrary endpoints, mostly due to security concerns. Although the majority of browsers now have WebSockets, the caveat is that the server needs to have specific support for the WebSocket handshake. This has limited the type of protocols and APIs that the browser could communicate

March 4, 2012 Rails is just an API There’s been a lot of talk recently about the future of Rails, and how it relates to client-side JavaScript frameworks such as Spine and Backbone. Historically Rails applications have been an amalgamation of Ruby, HTML and snippets of JavaScript. Add an API to the mix, include a ton of conditional rendering logic, and you’ve got your classic Rails spaghetti. So w