There should be at least one storage technology on this list. Redis? MongoDB? PostgreSQL? Riak? Cassandra?
I think the weird one is "Go". I don't see a lot of people using Go for anything, let alone web stuff.
That's fair about Go. The last 3 were a bit random, I was just trying to get a bit more variety in there beyond the more mainstream stuff. I realise that Go isn't really used by anyone, but it has had a bit of airtime simply due to it being a Google tech (not to mention the authors). I guess I mean hottest in the sense of most interesting to people.
Better put that on the list with all the other gut feeling..