Recommendations for what SDK to use server side


I’ve been trying to decide what to language to write the server side api code for my mobile app in and was going to go with Ruby, but then noticed that the github pages hadn’t been updated in over two years, skimmed through the forum posts, and confirmed that support is all but gone.

I’m writing an Android app (using CBLite) and because for now the only network calls my app needs are sync and authentication I’ve been neglecting the server-side code. In the short term all I need to do is write an authentication server (I’m planning on using JWT) but I’m also going to need to build out an API so that partners can connect to our Couchbase database.

Is there an SDK that has particularily been easy to use? My priority right now is getting authentication up and running asap.