Protocol buffers won hands down as far as space used...
The speed issues are still there, but I'm sure that over time things will improve. If the C extension for simplejson can speed up serialization by an order of magnitude, I have no doubt that similar improvements can be made to protocol buffers and thrift.
http://bouncybouncy.net/ramblings/posts/json_vs_thrift_and_p...
Protocol buffers won hands down as far as space used...
The speed issues are still there, but I'm sure that over time things will improve. If the C extension for simplejson can speed up serialization by an order of magnitude, I have no doubt that similar improvements can be made to protocol buffers and thrift.