Group 1 - The backend project is built on a microservices architecture using SpringCloud and SpringBoot, with the frontend on a WeChat mini-program mall [1] - Key components include service gateway Zuul, service registration and discovery using Eureka and Ribbon, and service fault tolerance with Hystrix [1] - The architecture supports distributed locking with Redis, service calls via Feign, and message queuing with Kafka [1] Group 2 - The characteristics of the flash sale scenario include a significant surge in website traffic as many users attempt to purchase simultaneously, with the request volume far exceeding available inventory [1] - The design philosophy for the flash sale architecture emphasizes traffic limiting, peak shaving, asynchronous processing, and memory caching to enhance system performance [1] - Scalability is crucial for supporting more users and higher concurrency, allowing for elastic expansion of the system as traffic increases [1]

一个典型的社交APP会包含前端（移动APP或Web端）、后端（服务器、数据库）以及一些支持工具和服务。北京木奇移动技术有限公司，专业的软件外 包开发公司，欢迎交流合作。 前端是用户直接交互的界面，主要分为移动端（iOS/Android）和Web端。 后端负责处理业务逻辑、数据存储、用户认证、API接口等。 原生开发 (Native Development)： iOS： 语言： Swift (推荐，现代、安全、高性能), Objective-C (老项目维护)。 框架： UIKit (传统UI框架), SwiftUI (新一代声明式UI框架)。 特点： 性 能最佳，用户体验最流畅，可访问设备所有原生功能，但开发成本高（需要分别为iOS和Android开发）。 适用场景： 对性能、动画、用户体验有极 致要求，或需要深度集成Apple生态系统特性的复杂社交APP。 Android： 语言： Kotlin (推荐，现代、简洁、Google官方支持), Java (老项目维护)。 框架： Android SDK (传统UI组件), Jetpack Compose (新一代声 明式UI框架)。 特点： 同iOS原生开发， ...