Interview Prep Roadmap — System Design

1. 01

   Foundations

   4 topics

   • Scalability Fundamentalsintermediate
   • Back-of-Envelope Estimationintermediate
   • CAP & Consistency Modelsadvanced
   • The Interview Frameworkintermediate
2. 02

   Networking & Traffic

   3 topics

   • DNS, CDN & Edgeintermediate
   • Load Balancingintermediate
   • Proxies & API Gatewaysintermediate
3. 03

   Data Storage at Scale

   4 topics

   • SQL vs NoSQLintermediate
   • Replicationadvanced
   • Sharding & Partitioningadvanced
   • Specialized Storageintermediate
4. 04

   Caching at Scale

   2 topics

   • Caching Architectureintermediate
   • Cache Consistency & Failure Modesadvanced
5. 05

   Messaging & Event-Driven Systems

   3 topics

   • Queues & Pub/Subintermediate
   • Kafka & Event Logsadvanced
   • Event-Driven Architectureadvanced
6. 06

   Distributed Systems Concepts

   5 topics

   • Distributed Fundamentalsadvanced
   • Consensus & Coordinationadvanced
   • Idempotency & Reliable Deliveryadvanced
   • Distributed Transactionsadvanced
   • Rate Limiting & Load Sheddingadvanced
7. 07

   Architecture Patterns

   3 topics

   • Monolith vs Microservicesadvanced
   • Serverless & Edge Architecturesintermediate
   • Observability & Security in Designadvanced
8. 08

   Case Studies

   17 topics

   • Design a URL Shortenerintermediate
   • Design a Rate Limiterintermediate
   • Design a Chat Systemadvanced
   • Design a News Feedadvanced
   • Design File Storage (Dropbox)advanced
   • Design a Notification Systemadvanced
   • Design Video Streaming (YouTube)advanced
9. 09

   Data Systems Internals

   6 topics

   • Storage Engine Internalsadvanced
   • Stream Processingadvanced
   • Batch & Lakehouseintermediate
   • Change Data Captureadvanced
   • Unique ID Generationintermediate
   • Probabilistic Data Structuresadvanced
10. 10

    Collaboration & Search Systems

    3 topics

    • OT vs CRDTadvanced
    • Search System Designadvanced
    • Recommendation Systems Overviewadvanced
11. 11

    AI-era System Design

    6 topics

    • LLM Inference Servingadvanced
    • RAG Infrastructure at Scaleadvanced
    • Vector Databases at Scaleadvanced
    • Long-context vs RAGadvanced
    • AI Cost & Capacity Designadvanced
    • Agent Infrastructureadvanced
12. 12

    Scale & Resilience Patterns

    4 topics

    • Multi-region Architecturesadvanced
    • Cell-based Architectureadvanced
    • Multi-tenancy Designadvanced
    • Privacy & Data Lifecycleadvanced

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