Processing Payments At Scale

at August 23rd, 2016

Groupon recently announced gross billings of $1,492,882,000 for Q2 2016 — that’s about $17M our systems charged every single day this quarter. There is a lot of complexity associated with processing such volume, which we’re going to explore in this blog post. Setup overview Before going into details, let’s first review how our payment system… Read More



Geekon: I-Tier

at October 7th, 2013

Today is exciting: we’ve completed a year-long project to move Groupon’s web traffic from our legacy Ruby on Rails application to Node.js. We’ve been working hard on this transition and have learned a lot along the way. Groupon will be one of the largest production deploys of Node.js worldwide. We’re currently serving ~50,000rpm and our… Read More