Just my humble opinion, from what I've seen recently: a) NodeJS microservices - seem to be preferred for most applications because they are so efficient and si

Just my humble opinion, from what I've seen recently: a) NodeJS microservices - seem to be preferred for most applications because they are so efficient and simple to maintain; single threaded and async, so it's very different from Scala. Also the ecosystem is progressing very quickly, NPM, etc. b) THRIFT - REST has an alternative, and it's really interesting to see Websockets, and binary encoding/decoding using THRIFT protocol, but not as simple as HTTP/REST in practice c) Cassandra - easily scalable and good enough for most simple features, has it's drawbacks as well; good for what could become gigantic operations