[waldr]

Hi, I'm rich the co-founder of tray.io..

There are quite a few different parts to our technology stack, and we were planning on doing a few more blog posts outlining the tech and challenges we have experienced..

For now I'll say that we are based on the jvm, using a mix of scala and java, typesafe stack, mongodb, redis, nginx, vert.x all hosted on AWS..

[nsaich]

Cheers, look forward to finding out more from your blog posts...