System Design

ScalabilityDistributed SystemsInterview PrepReal-World Design

Master system design from fundamentals to production architectures. Learn to design scalable, reliable, and maintainable distributed systems.

Free Tutorial

Learn System Design - Scalable Systems & Interview Preparation

Master system design from core concepts to real-world architectures. Learn scalability patterns, load balancing, caching, database sharding, and walk through complete designs of systems like URL shorteners, chat applications, video streaming platforms, and payment systems. Perfect for interview preparation and building production systems.

Prerequisites

Before diving into system design, you should have a solid understanding of programming fundamentals, basic networking concepts, and databases. Experience with building web applications will help you relate to the concepts discussed.

Node.js Tutorial REST & APIs Tutorial Docker Tutorial

What You'll Learn

✓ Scalability fundamentals & patterns
✓ Load balancing algorithms & strategies
✓ Caching at every layer
✓ Database sharding & replication
✓ CAP theorem & distributed consensus
✓ Message queues & event streaming
✓ Design real-world systems end-to-end
✓ System design interview framework
✓ Trade-off analysis & decision making
✓ Monitoring & observability

Course Topics

Lesson 1

Beginner

20 min

Fundamentals of System Design

Learn the fundamentals of system design including scalability, reliability, availability, and how to approach system design interviews

Scalability Fundamentals

Master scalability fundamentals including vertical vs horizontal scaling, stateless services, database scaling, and real-world scaling strategies

Load Balancing Deep Dive

Deep dive into load balancing algorithms, L4 vs L7 load balancers, health checks, and configuration examples with Nginx, HAProxy, and AWS ELB

Master caching strategies including cache-aside, read-through, write-through patterns, eviction policies, Redis vs Memcached, and cache invalidation

Learn database sharding strategies including hash-based, range-based, and directory-based sharding, consistent hashing, and real-world examples from Instagram and Discord

CAP Theorem Explained

Understand the CAP theorem with real-world examples, learn CP vs AP system trade-offs, PACELC extension, and how to choose the right consistency model

Learn how consistent hashing works, why it solves the rehashing problem, virtual nodes for balance, and implement it in TypeScript with real-world use cases

Message Queues and Event Streaming

Master message queues and event streaming with Kafka, RabbitMQ, and SQS comparisons, delivery guarantees, dead letter queues, and architectural patterns

Learn API gateway design patterns including routing, authentication, rate limiting, request transformation, circuit breaker, and comparisons of Kong, AWS, and Nginx

Rate Limiting Algorithms

Master rate limiting algorithms including token bucket, leaky bucket, fixed window, sliding window, and distributed rate limiting with TypeScript implementations

Content Delivery Networks (CDN)

Learn how CDNs work including push vs pull strategies, edge caching, invalidation, TTL, and multi-CDN architectures for scalable content delivery

Database Replication Strategies

Master database replication including master-slave, multi-master, synchronous vs async replication, consistency models, and conflict resolution

SQL vs NoSQL at Scale

Compare SQL and NoSQL databases at scale including ACID vs BASE, document stores, key-value, column-family, and graph databases with decision frameworks

System Design: URL Shortener

Design a URL shortener service like Bitly covering requirements, database schema, encoding strategies, read optimization, and analytics tracking

System Design: Social Media Feed

Design a social media feed like Twitter covering fan-out strategies, timeline generation, caching, media storage, and scaling for millions of users

System Design: Chat Application

Design a real-time chat application covering WebSocket connections, message storage, group chats, presence systems, and end-to-end encryption

System Design: Notification System

Design a scalable notification system covering push, SMS, email, and in-app notifications with priority queues, rate limiting, and delivery tracking

System Design: Video Streaming Platform

Design a video streaming platform like YouTube covering upload pipelines, transcoding, adaptive bitrate streaming, CDN delivery, and cost optimization

System Design: Search Autocomplete

Design a search autocomplete system using trie data structures, ranking algorithms, caching strategies, and real-time query processing at scale

System Design: Distributed Cache

Design a distributed caching system covering consistent hashing, replication, eviction policies, cache stampede prevention, and monitoring strategies

System Design: Payment System

Learn how to design a scalable payment system covering processing flows, idempotency, PCI-DSS security, and double-entry ledger accounting.

System Design: Ride-Sharing Service

Design a ride-sharing service like Uber or Lyft covering driver matching, geospatial indexing, ETA calculation, and surge pricing algorithms.

System Design: E-Commerce Platform

Design a scalable e-commerce platform covering product catalog, cart architecture, inventory management, order processing, and scaling for peak traffic.

Back-of-the-Envelope Estimation

Master back-of-the-envelope estimation for system design interviews with latency numbers, throughput calculations, and storage estimation techniques.

Data Partitioning Strategies

Explore data partitioning strategies including horizontal and vertical partitioning, key-based and range-based sharding, and hot spot mitigation.

Distributed Consensus Algorithms

Understand distributed consensus algorithms including Paxos, Raft, leader election, and log replication used in ZooKeeper and etcd.

Event-Driven Architecture

Learn event-driven architecture patterns including event sourcing, CQRS, event buses, and when to use event-driven design in distributed systems.

Monitoring and Observability

Master monitoring and observability with the three pillars: logs, metrics, and traces. Learn about Prometheus, Grafana, alerting, SLOs, and dashboards.

System Design Interview Framework

A complete framework for acing system design interviews with step-by-step methodology, estimation techniques, and common mistakes to avoid.

Trade-offs in System Design

Master trade-off analysis in system design covering consistency vs availability, SQL vs NoSQL, monolith vs microservices, and decision frameworks.

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Frequently Asked Questions

What is system design?

System design is the process of defining the architecture, components, modules, interfaces, and data flow of a system to satisfy specified requirements. It involves making high-level decisions about scalability, reliability, and performance for distributed systems that can handle millions of users and massive amounts of data.

How to prepare for system design interviews?

To prepare for system design interviews, start by learning core concepts like load balancing, caching, database sharding, and message queues. Practice designing real-world systems such as URL shorteners, chat applications, and video streaming platforms. Use a structured framework: clarify requirements, estimate scale, design high-level architecture, then dive into component details.

What are the key system design concepts?

The key system design concepts include scalability (horizontal vs vertical), load balancing, caching strategies, database sharding and replication, CAP theorem, consistent hashing, message queues, API gateway design, and rate limiting. Understanding these building blocks allows you to architect systems that are scalable, reliable, and maintainable.

How long does it take to learn system design?

Learning system design fundamentals typically takes 4-8 weeks of dedicated study. Mastering the subject to confidently design complex distributed systems and pass system design interviews usually takes 3-6 months of consistent practice. Building real-world experience through hands-on projects and production systems accelerates learning significantly.

Ready to Master System Design?

Start with the fundamentals and work your way through real-world system designs. Whether you're preparing for interviews or building production systems, this course has you covered.

Start Learning System Design →