A comprehensive collection of High-Level Design (HLD) and Low-Level Design (LLD) documents for modern software systems
This repository provides comprehensive system design documents for software architects, developers, and system designers. Each document includes detailed architectural patterns, implementation strategies, and real-world solutions to production challenges.
- Production-Ready Focus: Real-world challenges and solutions
- Comprehensive Coverage: From basic concepts to enterprise patterns
- Practical Examples: Code snippets and configuration examples
- Scalability First: High-traffic and concurrent usage optimization
- Security by Design: Built-in security considerations
- Modern Technologies: Latest tools and cloud-native approaches
| System | Description | Key Features | Topics Covered |
|---|---|---|---|
| 🎫 Coupon Management System | Production-ready microservice for coupon management | 🔒 Concurrency control 📈 High-traffic scalability 🛡️ Fraud detection 📊 Comprehensive monitoring 🔄 Disaster recovery |
Database design, Concurrency solutions, Scalability, Security, Monitoring, Performance optimization, Disaster recovery, Compliance |
| 🛒 E-commerce Platform | Coming Soon | Coming Soon | Coming Soon |
| 💳 Payment Gateway | Coming Soon | Coming Soon | Coming Soon |
| 📱 Social Media Platform | Coming Soon | Coming Soon | Coming Soon |
| 🚗 Ride-Sharing Service | Coming Soon | Coming Soon | Coming Soon |
| 🏨 Hotel Booking System | Coming Soon | Coming Soon | Coming Soon |
| 📺 Video Streaming Platform | Coming Soon | Coming Soon | Coming Soon |
| 🎮 Gaming Platform | Coming Soon | Coming Soon | Coming Soon |
| 📧 Email Service | Coming Soon | Coming Soon | Coming Soon |
| 🗂️ File Storage System | Coming Soon | Coming Soon | Coming Soon |
| 🔍 Search Engine | Coming Soon | Coming Soon | Coming Soon |
| 📊 Analytics Platform | Coming Soon | Coming Soon | Coming Soon |
| 🤖 Chatbot Platform | Coming Soon | Coming Soon | Coming Soon |
| 📈 Trading Platform | Coming Soon | Coming Soon | Coming Soon |
| 🏥 Healthcare System | Coming Soon | Coming Soon | Coming Soon |
| 🎓 Learning Management System | Coming Soon | Coming Soon | Coming Soon |
| 🏦 Banking System | Coming Soon | Coming Soon | Coming Soon |
| 📦 Logistics Platform | Coming Soon | Coming Soon | Coming Soon |
| 🏠 Real Estate Platform | Coming Soon | Coming Soon | Coming Soon |
| 🎵 Music Streaming Service | Coming Soon | Coming Soon | Coming Soon |
- Architecture Patterns (Microservices, Event-Driven, CQRS, Saga)
- Scalability Strategies (Horizontal/Vertical scaling, Load balancing)
- Data Management (Database design, Caching, Data consistency)
- Performance Optimization (Query optimization, Connection pooling, Async processing)
- Authentication & Authorization (OAuth 2.0, JWT, RBAC)
- Data Protection (Encryption, GDPR, Data privacy)
- Fraud Prevention (ML-based detection, Rate limiting)
- Audit & Compliance (SOX, PCI DSS, Audit logging)
- Distributed Tracing (Request flow, Performance analysis)
- Metrics Collection (Application metrics, Business KPIs)
- Logging Strategies (Structured logging, Centralized logging)
- Alerting & Incident Response (Proactive monitoring)
- Containerization (Docker, Kubernetes, Service orchestration)
- Cloud Platforms (AWS, GCP, Azure, Multi-region)
- CI/CD Pipelines (Automated testing, Deployment strategies)
- Disaster Recovery (Backup strategies, Failover mechanisms)
- Database Design (Normalization, Indexing, Query optimization)
- Caching Strategies (Multi-level caching, Cache invalidation)
- Event Streaming (Apache Kafka, Event sourcing, Message queues)
- Data Consistency (ACID properties, Distributed transactions)
- Start with basic system design concepts
- Study the Coupon Redeeming System example
- Practice building small prototypes
- Explore advanced topics of interest
- Review architecture patterns and approaches
- Focus on production challenges and solutions
- Implement best practices in your projects
- Apply learned patterns to real-world scenarios
- Analyze design decisions and trade-offs
- Evaluate technology stack options
- Use roadmaps for project planning
- Adapt designs to specific requirements
| Category | Technologies |
|---|---|
| Backend | Spring Boot (Java), Node.js (TypeScript), Go |
| Database | PostgreSQL, Redis, MongoDB |
| Message Queue | Apache Kafka, RabbitMQ, AWS SQS/SNS |
| Monitoring | Prometheus + Grafana, Jaeger, ELK Stack |
| Infrastructure | Docker + Kubernetes, AWS/GCP/Azure, GitHub Actions |
💡 Remember: System design is both an art and a science. The best designs emerge from understanding problems deeply, considering multiple perspectives, and making informed trade-offs.
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