We recently sat down for a chat with Bill Curtis, a co-founder and the CTO of Sweet Tooth (Now Smile.io), a points and rewards app for online stores worldwide.

What has been your greatest challenge?

We’re serving way more data today than we ever have, so scaling is mission-critical. In the past, we’ve struggled with traffic spikes. For example, there are seasonal spikes, like Black Friday or Cyber Monday. There are also spikes from merchant activity, such as load testing stores or importing a large number of orders.

I recently tweeted our requests-per-hour graph. It showed that during the huge spikes for this year’s Black Friday and Cyber Monday, our product availability was seamless on...

Based in Tel Aviv, Israel, Vitali Margolin is the Head of R&D for Roomer. Vitali leads a team of seven developers who built and operate the travel marketplace www.roomertravel.com and the travel protection service Life Happens, both running on Heroku.

What are you running on Heroku?

The four big projects are: the Roomer website, our administration app, our partner network and B2B website, and the Roomer API. The Roomer API is our highest load app. It can get up to 10k requests per minute from partner integrations such as Kayak. We have a few more technical products, including an app that does text recognition and automatically decodes confirmation emails, as well as a smart pricing...