System Design Interview Preparation Series

By Sunchit Dudeja

🚀 Welcome!

A comprehensive 50-day journey to master System Design for tech interviews. This series covers everything from fundamental concepts to real-world system design problems asked at top tech companies like Google, Amazon, Meta, Netflix, and more.

Whether you're preparing for your first tech interview or aiming for senior engineering roles, this series will transform the way you think about building scalable, reliable systems.

📚 Series Content

| Day | Title | Link | |-----|-------|------| | 1 | Why System Design Matters | Read | | 2 | Key Characteristics of Great Systems (SCALED) | Read | | 3 | Functional vs Non-Functional Requirements | Read | | 4 | Client-Server Architecture | Read | | 5 | Capacity Estimation: Think Like an Architect | Read | | 6 | Design for Failure: The Architect's Mindset | Read | | 7 | Databases: Developer vs Architect Thinking | Read | | 8 | Load Balancing: Traffic Orchestration | Read | | 9 | Bloom Filters: Preventing Cache Penetration | Read | | 10 | Request Coalescing: When 50,000 Became 1 | Read | | 11 | Kubernetes Scaling: The Architect's Orchestra | Read | | 12 | Factory Design Pattern: Zomato Order System | Read | | 13 | Circuit Breaker: When PhonePe Saved 50K Payments | Read | | 14 | Spring Boot Performance: The Architect's 6-Step Framework | Read | | 15 | Redis Single-Threaded Magic: Why It's Faster Than Your Multi-Threaded Database | Read | | 16 | Redis Sorted Sets: Building Real-Time Leaderboards at Scale | Read | | 17 | Instagram's 7-Layer Architecture: How 1M Likes Don't Break the Internet | Read | | 18 | Redis Configuration Nightmare: Lettuce vs Jedis - The Default Timeout Trap | Read | | 19 | How Google Checks Email Uniqueness in Milliseconds: Bloom Filters | Read | | 20 | Block File Uploads: How Dropbox & Netflix Upload 5TB Files to S3 | Read | | 21 | Optimistic vs Pessimistic Locking: Amazon vs BookMyShow | Read | | 22 | The 7 Layers of Every High-Level Design: A Complete Architecture Blueprint | Read | | 23 | Database Selection for System Design: The Architect's Complete Guide | Read | | 24 | API Protocol Decision Framework: gRPC, GraphQL, REST & WebSocket | Read | | 25 | Deployment Strategies Decoded: The Architect's Complete Guide | Read | | 26 | Docker Production Commands: The Architect's Essential Guide | Read | | 27 | Two-Phase Commit (2PC): The Distributed Transaction Protocol | Read | | 28 | Consistent Hashing: The Resharding Strategy That Powers Amazon, Discord & Netflix | Read | | 29 | Forward Proxy vs Reverse Proxy: The Gatekeepers of Modern Internet Architecture | Read | | 30 | Database Replication: The Power That Transforms Fragile Systems into Resilient Architectures | Read | | 31 | Kafka Schema Evolution: The "New Topic" Strategy for Breaking Changes | Read | | 32 | Scheduled Locks: Distributed Lock for Cron Jobs — Step-by-Step Workflow | Read | | 33 | Distributed Tracing IDs: The Complete Guide | Read | | 34 | Kafka Partition Assignment & Rebalancing: The Complete Guide | Read | | 35 | What Can Go Wrong: Distributed Systems & How to Survive Them | Read | | 36 | RabbitMQ vs Kafka: The Architect's Decision Guide | Read | | 37 | Optimizing Cache for High Hit Rate in Distributed Systems | Read |

🎯 What You'll Learn

• Foundational Concepts: Client-Server Architecture, APIs, Databases, Caching
• Distributed Systems: CAP Theorem, Consistency, Availability, Partitioning
• Scalability Patterns: Load Balancing, Sharding, Replication
• Real Interview Problems: Design WhatsApp, Netflix, Uber, Amazon, and more

📬 Connect

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Happy Learning! 🎉