jansson8964 / grabreview

GrabReview

Technical Stack

Backend

• Framework: Spring Boot 2.x, Spring MVC
• Database: MySQL, MyBatis-Plus
• Caching: Spring Data Redis, Redission
• Messaging: RabbitMQ
• Utilities: Hutool
• Containerization: Docker
• Testing: Junit, Jmeter

Frontend

• Technologies: HTML, CSS, JavaScript
• Framework: Vue 2
• UI Library: Element-UI
• HTTP Client: Axios
• Web Server: Nginx

Key Features

1. SMS Login:
   • Distributed Session Management: Implemented using Redis to synchronize login states across clusters.
   • Efficient User Data Storage: Switched from using String to Hash for storing user information.
2. Shop Query Optimization:
   • Caching Mechanism: Utilizes Redis to cache frequently accessed shop data, reducing database load and improving query efficiency by 90%.
   • Generic Caching Access: Developed a static method for caching using generics and functional programming, tackling issues like cache avalanche and cache penetration.
   • Redis Key Management: Constant classes manage Redis key prefixes and TTL, ensuring business isolation in key space and minimizing conflicts.
3. Geo-based Merchant Query:
   • Data Structures: Utilizes Redis's Geo and Hash structures for storing nearby merchant data.
   • Efficient Querying: Implements high-performance merchant queries and distance-based sorting using the Geo Search command.
4. User Interaction Features:
   • Likes and Ranking: User likes stored using Redis List, with a ranking system based on ZSet for TopN likes.
   • Social Features: Implements user follow and mutual follow functions using Redis Set.
5. Real-Time Feed Stream for Followers:
   • Implementation: Leveraged a push-based model to ensure timely delivery of new review messages and reduce waiting time for users, suitable for systems with a smaller user base.
6. Coupon Flash Sale:
   • Inventory Pre-Check: Utilizes Redis and Lua scripting for stock pre-checks.
   • Asynchronous Order Creation: Implemented using RabbitMQ, solving over-selling issues and ensuring one order per user.

grabreview's Issues

Refactor Frontend Using React for Enhanced UI