Efficient network protocols for RPC
I guess these are something like that (untested):
- Google protocol buffers Protocol Buffers | Google Developers
 - Cap'n proto Cap'n Proto: Introduction
 - Hessian Hessian Binary Web Service Protocol
 - BERT and BERT-RPC 1.0 Specification
 - Universal Binary Format ⨪ UBF 2.2 User’s Guide
 - Apache Thrift
 - MessagePack