Funny you should mention that. Msgpack uses a variable-length binary encoding for integers. It can, for example, fit integers in the interval [-32, 127] into a

Funny you should mention that. Msgpack uses a variable-length binary encoding for integers. It can, for example, fit integers in the interval [-32, 127] into a single byte. And unlike that fixed four-byte encoding you mention, it can also handle 64-bit integers. (I'm not disagreeing with you, or anything. I just like talking about binary encodings.)