Articles
DNS — How Domain Name System Works
DNS is the phonebook of the internet. Understanding how it works is essential for system design — from latency to failover to global load balancing.
CDN — How Content Delivery Networks Work
CDNs are one of the most impactful performance optimizations you can make. Learn how they work, what they cache, and when to use them.
Caching Strategies — Where and How to Cache
Caching is the single most effective way to improve system performance. Learn the strategies, patterns, and trade-offs you need to know.
Load Balancing — Algorithms and Patterns
Load balancers are the backbone of scalable systems. Learn how they work, the algorithms they use, and the patterns you'll encounter in real architectures.
SQL vs NoSQL — How to Choose
A practical guide to choosing between SQL and NoSQL databases. Understand the trade-offs, the different NoSQL types, and how to make the right call for your system.
ACID vs BASE
ACID and BASE are two opposing models for database transactions. Learn what each guarantees, where they apply, and how to choose between them.
CAP Theorem Explained
The CAP theorem is one of the most important concepts in distributed systems. Understand what it means, what the trade-offs are, and how real databases make the choice.
Availability and Reliability
What availability and reliability mean in distributed systems, how to measure them, and the patterns used to achieve high availability.
Latency vs Throughput
Two of the most important performance metrics in system design — what they mean, how they differ, and how to optimize for each.
Scalability: Vertical vs Horizontal Scaling
Understand the two core approaches to scaling systems — vertical and horizontal — and when to use each in real-world architectures.
Introduction to System Design
Learn the fundamentals of system design — scalability, reliability, and the building blocks every engineer should know.