Lesson 2 of 24 1 min

Introduction to High-Level Design

Introduction to High-Level Design deep dive for HLD & LLD interview preparation.

What is High-Level Design (HLD)?

HLD focuses on the system architecture, major components, and how they interact. It's about scalability, availability, and reliability.

Key Pillars:

  1. Scalability: Can the system handle 10x more users?
  2. Availability: Is the system always up?
  3. Consistency: Do all users see the same data?

Real-World Analogy:

Designing a city's plumbing and electrical grid without worrying about the specific fixtures in a single bathroom.

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