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System design HLD

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This repository contains free resources to learn System Design concepts and prepare for interviews.

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✅ If you are new to System Design, start here:

System Design was HARD until I Learned these 30 Concepts⁠

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📌 System Design Key Concepts

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Scalability⁠

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Availability⁠

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CAP Theorem⁠

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ACID Transactions⁠

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Consistent Hashing⁠

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Rate Limiting⁠

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SPOF⁠

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Fault Tolerance⁠

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Consensus Algorithms⁠

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Gossip Protocol⁠

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Service Discovery⁠

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API Design⁠

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Disaster Recovery⁠

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Distributed Tracing⁠

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🛠️ System Design Building Blocks

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APIs⁠

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Content Delivery Network (CDN)⁠

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Proxy vs Reverse Proxy⁠

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Domain Name System (DNS)⁠

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Caching⁠

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Caching Strategies⁠

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Distributed Caching⁠

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API Gateway⁠

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Load Balancing⁠

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Databases Types⁠

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SQL vs NoSQL⁠

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Database Indexes⁠

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Consistency Patterns⁠

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HeartBeats⁠

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Circuit Breaker⁠

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Idempotency⁠

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Database Scaling⁠

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Data Replication⁠

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Data Redundancy⁠

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Database Sharding⁠

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Database Architectures⁠

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Failover⁠

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Bloom Filters⁠

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Message Queues⁠

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WebSockets⁠

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Checksums⁠

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Microservices Guidelines⁠

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Distributed Locking⁠

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⚖️ System Design Tradeoffs

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Top 15 Tradeoffs⁠

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Vertical vs Horizontal Scaling⁠

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Concurrency vs Parallelism⁠

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Long Polling vs WebSockets⁠

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Batch vs Stream Processing⁠

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Stateful vs Stateless Design⁠

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Strong vs Eventual Consistency⁠

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Read-Through vs Write-Through Cache⁠

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Push vs Pull Architecture⁠

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REST vs RPC⁠

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Synchronous vs. asynchronous communications⁠

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Latency vs Throughput⁠

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🖇️ System Design Architectural Patterns

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Client-Server Architecture⁠

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Microservices Architecture⁠

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Serverless Architecture⁠

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Event-Driven Architecture⁠

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Peer-to-Peer (P2P) Architecture⁠

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✅
`How to Answer a System Design Interview Problem`⁠
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💻 System Design Interview Problems

Easy

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Design URL Shortener like TinyURL⁠

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Design Leaderboard⁠

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Design Content Delivery Network (CDN)⁠

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Design Parking Garage⁠

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Design Vending Machine⁠

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Design Distributed Key-Value Store⁠

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Design Distributed Cache⁠

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Design Authentication System⁠

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Design Unified Payments Interface (UPI)⁠

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Medium

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Design WhatsApp⁠

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Design Spotify⁠

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Design Distributed Job Scheduler⁠

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Design a Scalable Notification Service⁠

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Design Instagram⁠

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Design Tinder⁠

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Design Facebook⁠

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Design Twitter⁠

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Design Reddit⁠

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Design Netflix⁠

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Design Youtube⁠

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Design Google Search⁠

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Design E-commerce Store like Amazon⁠

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Design TikTok⁠

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Design Shopify⁠

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Design Airbnb⁠

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Design Autocomplete for Search Engines⁠

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Design Rate Limiter⁠

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Design Distributed Message Queue like Kafka⁠

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Design Flight Booking System⁠

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