500px

Automated test optimization at 500px

The primary automated test suite at 500px contains over 11000 automated examples written in Rspec with Capybara. These tests run on development branches, as well as each time a commit is merged into…

How do we maintain 500px?

500px users may notice new features on our site occasionally, but we put new code into production multiple times a day! How do we ensure that everything works after every change? Good question! I’m a…

Consistency Managers & Communication Channels — RocketData as a Messaging Bus

I’m a Computer Engineering student at the University of Waterloo, currently working at 500px as a mobile developer for my co-op term. This term I’ve primarily been working on the 500px iOS app, and…

UDP Load Balancing with Keepalived

About halfway into my four month internship as a platform developer at 500px, I was faced with the problem of load balancing UDP packets. The rate limiting service that I had been writing was ready…

Tips and Tools from the 500px web team

The 500px web team meets weekly for a broad-ranging discussion we call the “Web Tech Deep Dive”. Sometimes we explore a dark corner of our codebase; sometimes someone presents a new technology; and…