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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.
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