System Design

Abstract

System design notes covering requirements, distributed systems, caching, and scalability playbooks.

Overview

• High-Level System Design Guide - Curated map of all HLD topics

Foundations

• System Requirements
• Network Basics
• Web Security

Distributed Systems

• Consistent Hashing
• CAP Theorem
• Load Balancer
• Leader Election

Performance & Scalability

• Scale from Zero to Millions of Users
• Caching
• Caching Strategies
• MapReduce
• Bloom Filter
• Back of the Envelope Calculation

Database in System Design

• SQL vs NoSQL
• Master Slave Replication

Tip

Use the overview page to jump between sections and cross-reference database fundamentals.