Wayfair Engineering places special emphasis on software testing as a means of maintaining stability in production. The DevTools team, which I am a member of, has built and integrated a number of tools into our development and deploy process in order to catch errors as early as possible, especially before…
We write a lot of PHP unit tests at Wayfair, and we want to be able to run them as fast as possible, which seems like a good use case for parallelization. Running tests in parallel is not built in to PHPUnit, but there are ways to do it. When…
We’ve received a few online, and in person questions like this, so i figured it was probably worth explaining in a little more detail. On the Deployment server, we have a variety of applications that we deploy. From Windows .Net Services, Python, Classic ASP, CSS/JS and PHP to name a few….
In part 1 of this 2-part series we used a comic strip to depict Python programmers and web operations folk working together to figure out how to deploy some scientific computing to an e-commerce site. Joking aside, let’s describe exactly what were were trying to accomplish, and how we did…
Python is my favorite computer language for data science, but it is a poorly standardized beast when it comes to packaging, deployment, web operations, etc. There are plenty of people who are deploying Python code to the web effectively, but especially in the data science area, there is no equivalent…
We run a python/Tornado-based recommendations service behind the scenes at Wayfair. As part of our code deployments, we need to install various third-party libraries to our Tornado servers. The python tools that do this kind of thing are a bit half-baked, so we paper over their inadequacies with puppet. A…
If you haven’t already read the overview of our deployment system or the architecture of our deployment server you might want to check those posts out first. In this article I will discuss how we deploy code in a unique way that gives us all the flexibility of the symlink…
The architecture of the deployment system In the last post I explained our deployment system goals and the basic architecture. Now that stage is set, let’s get into the details of the architecture from the deployment server perspective. As we designed the deployment server we wanted to keep the interface…
The Wayfair Engineering team isn’t really on the continuous integration bandwagon, but our deployment model comes pretty close naturally because of our desire for continuous improvement. In the block to the right of the homepage we are displaying the number of code deployments that engineers at Wayfair have done over…
Part 1 of a series on Code Deployment at Wayfair Code Deployment at Wayfair has always been about creating the fastest and most friction free deployment process possible . Wayfair.com Architecture History For the last 9 years our platform has been primarily a Classic ASP environment on a Windows Server…
