It is built with openresty and couchdb both of which I feel are terribly underrated technologies.
"How is it working out?"
On the technology side. Everything is going great. I read a thread on micro-services a while ago and with couchdb (if you take time to think through) it is really easy to have micro-services that can be distributed. We've got 5. While they are not independently deployed yet they can be at any time. It's only a mater of replicating the existing data(very easy) and changing the urls(easy but needs some thorough testing).
openresty makes it really easy to communicate to in house as well as some third party services we use. I smile every time I write:
`local res1,res2,res3 = ngx.location.capture_multi{{"url1"},{"url3"},{"url3"}}
It is very satisfying to see the results of different independent apis coming together in a single call.
Both of these technologies are very resource efficient,openresty in particular. And we have tested high loads of traffic on cheap servers without making any effort to optimize.
On the business side. We are doing okay. Making sales is always a challenge but people are interested in talking to us which is a good sign, I feel. Only a matter of time before we perfect our product and pitch. We are in no hurry :)