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The System Design track.

Design scalable systems — load balancing, caching, microservices and real-world architecture. Built as a curriculum — 11 chapters, recommended spine if you're new, side-quests when you're ready.

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CURRICULUM

11 chapters · 145 topics

Fundamentals

SPINEIntermediate

10 topics · ~1h 10m · 0/10 read

System Design Basics Scalability Concepts CAP Theorem Horizontal vs Vertical Scaling Monolith vs Microservices+5 more

Components

SPINEIntermediate

23 topics · ~2h 41m · 0/23 read

Load Balancing What Is a Load Balancer? Types, Algorithms and How They Work Caching Strategies CDN — Content Delivery Network Message Queues+18 more

Architecture

SPINEAdvanced

17 topics · ~1h 59m · 0/17 read

Microservices Architecture REST API Design GraphQL vs REST Event-Driven Architecture CQRS Pattern+12 more

Real World

SPINEAdvanced

40 topics · ~4h 40m · 0/40 read

Design URL Shortener Design Twitter Feed Design YouTube Design WhatsApp Design Uber+35 more

Databases in Design

SPINEAdvanced

5 topics · ~35m · 0/5 read

Database Selection Guide Choosing Between Redis and Memcached Data Warehousing Basics Data Lake vs Data Warehouse Time Series Databases

Security

SPINEIntermediate

13 topics · ~1h 31m · 0/13 read

OAuth 2.0 and OpenID Connect JWT Authentication Flow HTTPS and TLS Explained API Security Best Practices CSRF and XSS Prevention+8 more

Estimation

Intermediate

5 topics · ~35m · 0/5 read

Back of Envelope Estimation Capacity Planning Basics QPS — Queries Per Second Storage Estimation Techniques Bandwidth Estimation Techniques

Networking

Intermediate

7 topics · ~49m · 0/7 read

How DNS Works TCP vs UDP The OSI Model HTTP/1.1 vs HTTP/2 vs HTTP/3 (QUIC)WebSockets Explained+2 more

Database Internals

Intermediate

9 topics · ~1h 3m · 0/9 read

Database Replication Database Sharding Database Indexing Normalization vs Denormalization ACID vs BASE+4 more

Distributed Systems

Intermediate

9 topics · ~1h 3m · 0/9 read

Distributed Consensus: Paxos and Raft Leader Election Quorum: R + W > N Distributed Transactions and 2PC Distributed Locking+4 more

Async & Data Processing

Intermediate

7 topics · ~49m · 0/7 read

Publish-Subscribe Pattern Kafka and the Distributed Log MapReduce and Batch Processing Stream Processing Inverted Index and Text Search+2 more