Google Protocol Buffer( 简称 Protobuf) 是 Google 公司内部的混合语言数据标准，目前已经正在使用的有超过 48,162 种报文格式定义和超过 12,183 个 .proto 文件。他们用于 RPC 系统和持续数据存储系统。

Protocol Buffers 是一种轻便高效的结构化数据存储格式，可以用于结构化数据串行化，或者说序列化。它很适合做数据存储或 RPC 数据交换格式。可用于通讯协议、数据存储等领域的语言无关、平台无关、可扩展的序列化结构数据格式。目前提供了 C++、Java、Python 三种语言的 API。-Google Protocol Buffer (referred Protobuf) is a mixed-language data standards within the company Google, it is now being used with more than 48,162 kinds of packet format definition and a .proto than 12,183 files. They used RPC system and continuous data storage system. Protocol Buffers is a lightweight efficient structured data storage format that can be used to structure data serialization, or serialization. It is very suitable for data storage or RPC data exchange format. Language can be used for communication protocols, data storage and other areas regardless of platform-independent, scalable serializing structured data format. Currently it offers C++, Java, Python three languages API.