Which is your first choice of data serialization?

My opinion on XML v/s JSON v/s MsgPack v/s Protobuf v/s Thrift v/s Pickle is posted here: https://enqueuezero.com/data-serialization.html

* JSON is usually your first choice. It's simple, human readable, and has most widespread support. * Use MsgPack instead of JSON if performance is an issue. * Use Protobuf if type check and schema check is essential. * Use Thrift if you're developing RPC services. * Use language built-in serialization functions or methods if the use case is only limited in a single language, and you don't care security that much (not good).