[zackya89]

for context, sorry if ignorant question but what else do they write with when full scale, I thought twittter was written on rails as well

[riffraff]

I think it's fair to say that there are high scale websites built using any stack, mostly using more than one technology.

I was just being ironic in my previous comment.

[zmoney1]

Twitter moved a lot of their codebase from RoR to Scala a few years back.