Master distributed system architecture with unwavering clarity.
From consistent hashing and distributed transactions to planetary multi-region replication. Learn through first-principles trade-off analyses, interactive whiteboards, and real-world failure post-mortems.
Curated pathways for distributed mastery.
Every module breaks down production trade-offs, step-by-step capacity formulas, and real-world failure post-mortems with interactive visuals.
High-Level Design (HLD) Foundations
Master core high-level architecture principles: Load Balancers, Distributed Caching, Database Sharding, Microservices, Message Queues, and System Tradeoffs.
- Deep-dive architectural breakdowns & tradeoffs
- Calculations for throughput, latency, & capacity
- Real-world case studies & fault-tolerance strategies
- Interactive visual simulators & flamegraphs
Low-Level Design (LLD)
Object-Oriented Design (OOD), Design Patterns, UML Diagrams, Schema Design, and Code-level Implementation for system components.
- Object-oriented class structures & SOLID principles
- Design patterns: Factory, Observer, Singleton, Strategy
- Database schema design & ER diagrams
Database Sharding & Data Partitioning
Horizontal vs vertical scaling, consistent hash rings with virtual nodes, re-sharding without downtime, cross-partition joins, and two-phase commit fallbacks.
- Range-based, Hash-based, and Directory partitioning strategies
- Virtual node consistent hashing & hotspot mitigation
- Cross-partition queries & global secondary indexes
- Zero-downtime data migration & schema evolution
Distributed Caching & Invalidation Patterns
Cache-aside, Read-through, Write-through, and Write-behind patterns. Eliminate cache thundering herds, stampedes, and network partition replication lag.
- Multi-tier caching: Browser, CDN, API Gateway, Redis
- Probabilistic early expiration & cache stampede prevention
- Cache invalidation protocols & replication consistency
- Memory sizing formulas & eviction policies (LRU, LFU)
Event-Driven Architecture & Transactional Outbox
Decouple distributed microservices with Kafka and RabbitMQ. Master guaranteed at-least-once message delivery and atomic database state updates.
- Kafka log partitions, offset commits & consumer groups
- Transactional outbox pattern with Postgres CDC Debezium
- Idempotent consumers & deduplication with Redis
- Dead letter queues, backpressure, and circuit breakers
Distributed Key-Value Store & Raft Consensus
Design DynamoDB and Cassandra from first principles: Tunable quorum consistency (R + W > N), gossip failure detection, vector clocks, and Raft consensus.
- Raft leader election, log replication & heartbeat timeout
- Sloppy quorums, hinted handoffs, & anti-entropy Merkle trees
- LSM-Trees vs B-Trees for write-heavy storage engines
- Split-brain prevention & CAP partition recovery
What Happens When You Type google.com?
The canonical end-to-end journey from keyboard stroke to rendered pixels: Anycast DNS resolution, TLS 1.3 handshake, TCP BBR congestion control, Edge CDN POPs, and reverse proxying.
- Recursive DNS lookup & root nameserver resolution
- 0-RTT TLS session resumption & cipher negotiation
- Envoy / Nginx load balancing & HTTP/3 QUIC streams
- Distributed database query execution & SSR rendering
Global Distributed Rate Limiter & Token Bucket
Protect production APIs against DDoS attacks and abusive noisy neighbors with low-latency distributed rate limiters across multi-region edge clusters.
- Token Bucket vs Leaky Bucket vs Sliding Window Counter
- Atomic distributed rate checks using Redis Lua scripts
- Local in-memory caching with batch sync to reduce latency
- Graceful degradation with HTTP 429 Retry-After headers
Design, test, and validate topologies in real time.
Connect load balancers, caching tiers, message brokers, and sharded storage on an interactive canvas. Run simulated load spikes and get instant AI-powered architectural grading.
Trusted by engineers leading planetary infrastructure.
Read how staff and principal engineers use our interactive first-principles curriculum to calibrate for system design interviews and multi-region production loops.
“The visual simulators for Raft quorums and sharding topology gave me more mental clarity in one afternoon than months of reading academic whitepapers.”
“SystemDesign.website is the rare platform that doesn't just recite LeetCode-style memorization. It teaches actual engineering trade-offs with rigorous math.”
“Passed my Google L6 system design loop on the first try. The failure recovery patterns and AI grading simulator were the exact edge I needed.”
“The transactional outbox and CDC breakdown saved us months of painful bugs during our migration to event-driven microservices.”
“The depth on consistent hashing rings and hotspot prevention is unmatched. Our entire platform team uses it as mandatory onboarding.”
“Finally, an architecture resource with interactive whiteboards and production telemetry instead of shallow textbook bullet points.”
Ready to design planetary-scale systems?
Join engineers preparing for principal, staff, and senior architecture interviews with interactive simulators and rigorous first-principles lessons.