○○ Common architectural styles for network-based software Hierarchical styles Client-Server(CS) Layered System (LS) and Layered-Client-Server(LCS Client-Stateless-Server(CSS Client-Cache-Stateless-Server(C$SS) Layered-Client-Cache-Stateless-Server(LC$ss · Interne域名系统(DNS) Remote Session (RS ·应用状态被完全保存在服务器上 · telnet Remote data ACCeSs (RDA)Common architectural styles for network-based software • Hierarchical Styles – Client-Server (CS) – Layered System (LS) and Layered-Client-Server (LCS) – Client-Stateless-Server (CSS) – Client-Cache-Stateless-Server (C$SS) – Layered-Client-Cache-Stateless-Server (LC$SS) • Internet域名系统（DNS） – Remote Session (RS) • 应用状态被完全保存在服务器上 • telnet – Remote Data Access (RDA)