interoperability between microservices? Motivation • How to maintain interoperability between microservices? Upgrade Motivation • How to maintain interoperability between microservices? • APIs are allowed as v2 Send v2 result Decode v2 as v1 Motivation • How to maintain interoperability between microservices? • APIs are allowed to evolve without breaking existing client • Wire format contains type information

mock server Why use rust ？ Software testing tool • 模拟数据规则 • 自动化测试 • Company's own protocol • Microservices • Multiple backend product line with complex upstream • Common testing platform 大公司抓包工具的需求