System Design8 min · Sep 14, 2026Bloom Filters: Just Say NoHow a clever mathematical trick helps billions of users check username availability in milliseconds.
System Design6 min · Sep 14, 2026Vertical vs Horizontal ScalingWhen your app starts getting hammered, how do you decide whether to go bigger or go wider? Here's the honest breakdown.
System Design6 min · Sep 14, 2026CAP TheoremThe most fundamental tradeoff in distributed systems explained through a simple, real-world story.
System Design5 min · Sep 14, 2026What is a Database?Why your text file isn't enough, and how databases actually work under the hood.
Databases7 min · Sep 14, 2026How Databases ScaleWhy adding a second database instance is nothing like adding a second app server, and the three patterns everyone reaches for when one machine stops being enough.
