📘 Core Concepts

• Load Balancing
• Horizontal & Vertical Scaling
• CAP Theorem
• Database Sharding & Replication
• Consistency & Availability
• Microservices vs Monolith
• Latency & Throughput
• Caching Strategies
• Rate Limiting & Queuing
• Content Delivery Networks (CDNs)
• Service Discovery
• Failover & Redundancy
• Data Partitioning
• Pub/Sub Messaging
• Event-driven Architecture
• API Gateways
• Design for Fault Tolerance
• Infrastructure as Code (IaC)

🎓 Learning Resources

• System Design Primer
• Grokking the System Design Interview
• System Design 101 (YouTube)
• Scalability.org
• Architecture Notes
• Stanford CS168: Networking & Architecture
• Harvard CS75: Building Dynamic Websites
• NGINX Microservices Guide
• InfoQ Architecture Section
• Martin Fowler - Microservices
• Resilient Systems Blog
• Google SRE Handbook
• Azure Architecture Guide
• AWS Architecture Center
• Netflix Tech Blog
• Uber Engineering Blog

🧪 Practice & Case Studies

• LeetCode System Design Q&A
• CheckCheckzz GitHub Repo
• System Design Collection
• Awesome System Design
• InterviewBit System Design
• ByteByteGo (Newsletter & videos)
• Examples of Bad System Design (Awful AI)
• The Pragmatic Engineer
• Kamran Ahmed's System Design Roadmap
• Build Your Own X
• Meta Engineering Blog
• Reddit - r/systemdesign