System Design

Design a fault-tolerant e-commerce order system with inventory management, payment processing, saga pattern for transactions, and event-driven order fulfillment.

Build observable systems with structured logging, distributed tracing, and metrics dashboards. Learn SRE practices including SLOs, error budgets, and incident response.

Understand the CAP theorem, its practical implications, and distributed consensus algorithms like Raft and Paxos. Learn how real databases handle partition tolerance.

Build a distributed rate limiter using token bucket, sliding window, and leaky bucket algorithms. Covers Redis-based implementation and API gateway integration.

Design robust APIs with proper rate limiting, OAuth2 authentication, and versioning. Learn RESTful best practices and API gateway patterns for production systems.

Architect a multi-channel notification system supporting push, email, SMS, and in-app alerts. Learn priority queues, template engines, and user preference handling.

Deep dive into database sharding and partitioning strategies. Learn hash-based, range-based, and geographic sharding with real-world examples and trade-offs.

Design a scalable real-time chat system with WebSockets, message delivery guarantees, read receipts, group chats, and offline message synchronization strategies.

Learn how message queues like Kafka, RabbitMQ, and SQS enable event-driven architectures. Understand pub/sub patterns, guaranteed delivery, and async processing.

Step-by-step system design for a URL shortener like Bitly. Covers hashing algorithms, base62 encoding, database schema, caching layer, and analytics tracking.

Explore caching strategies like write-through, write-back, and cache-aside for system design. Learn Redis caching patterns and CDN optimization techniques.

Compare SQL and NoSQL databases for system design. Learn when to use PostgreSQL, MongoDB, Cassandra, or DynamoDB based on your data model and access patterns.

Master load balancing algorithms and reverse proxy patterns. Learn how Nginx, HAProxy, and cloud load balancers distribute traffic across servers effectively.

Compare horizontal and vertical scaling strategies for distributed systems. Understand when to scale up vs scale out and the trade-offs of each approach.

Learn the core principles of system design including scalability, availability, and consistency. A beginner-friendly guide to thinking about large-scale systems.