What, Why, How of System Design: A Beginner's Path to Building Scalable Systems

What, Why, How of System Design

What Is System Design and Why It Matters
- Why Engineering Teams Prioritize System Design
- How to Approach the System Design Process
What, Why, How of Web Requests
- What Happens When You Type "google.com"
- Why Web Protocols Define Modern Applications
- How the Internet Stack Processes Requests
What, Why, How of System Scaling
- What Are Horizontal and Vertical Scaling
- Why Systems Need Different Scaling Approaches
- How to Implement Scaling Strategies
What, Why, How of Capacity Planning
- What Is Capacity Estimation
- Why Predicting Resource Needs Matters
- How to Calculate System Requirements

What, Why, How of Databases
- What Are SQL and NoSQL Database Systems
- Why Different Data Models Serve Different Needs
- How to Choose and Implement Database Solutions
What, Why, How of Database Indexing
- What Are Database Indexes
- Why Indexes Improve Query Performance
- How to Design Effective Indexing Strategies
What, Why, How of Data Partitioning
- What Is Sharding and Partitioning
- Why Breaking Up Data Improves Scalability
- How to Implement Data Distribution Strategies
What, Why, How of Data Consistency
- What Are Consistency Models
- Why Trade-offs Between Consistency and Availability Exist
- How to Implement Different Consistency Levels

What, Why, How of Caching
- What Is a Cache and Distributed Caching
- Why Caching Dramatically Improves Performance
- How to Implement Effective Cache Strategies
What, Why, How of CDNs
- What Are Content Delivery Networks
- Why Global Content Distribution Matters
- How CDNs Optimize Content Delivery
What, Why, How of Cache Policies
- What Are Cache Write and Replacement Policies
- Why Policy Choices Impact System Performance
- How to Implement and Tune Cache Policies
What, Why, How of Thrashing
- What Is Cache and Memory Thrashing
- Why Systems Experience Performance Collapse
- How to Prevent and Mitigate Thrashing

What, Why, How of Load Balancing
- What Are Load Balancers
- Why Traffic Distribution Is Essential for Scaling
- How to Implement Load Balancing Algorithms
What, Why, How of Consistent Hashing
- What Is Consistent Hashing
- Why Traditional Hashing Falls Short at Scale
- How to Implement Consistent Hashing
What, Why, How of Message Queues
- What Is a Message Queue
- Why Asynchronous Processing Improves Systems
- How to Implement Queue-Based Architectures
What, Why, How of Publisher-Subscriber Model
- What Is the Pub-Sub Pattern
- Why Event-Driven Architecture Enables Scaling
- How to Build Event-Based Systems