Master the System Design Interview with a structured framework. This repository covers step-by-step solutions to popular design questions and explores the core components of distributed systems.
To provide a clear, repeatable roadmap for navigating 45-minute architectural interviews, from gathering requirements to identifying bottlenecks.
Understanding the trade-offs is the heart of system design.
Scalability: Handling increased load by adding resources
Availability: Ensuring the system remains operational
Reliability: The system performs its intended function under specific conditions
Maintainability: Ease of evolving and fixing the system over time
Load Balancing: Distributing traffic across servers
Caching: Improving latency with high-speed data storage layer
Databases: Relational and Non-Relational storage
Messaging: Decoupling services with asynchronous communication
When tackling a design problem, follow this structured approach:
Understand the Problem: Clarify goals and scale (DAU, QPS).
High-Level Design: Draw the primary components and end-to-end data flow
Deep Dive: Scaling specific components (e.g., Database sharding, Cache eviction).
Bottlenecks: Identifying and mitigating single points of failure.