TechCraftZone

TechCraftZone explains how software really works, from database internals and system design to the bugs and outages that broke the internet.

I'm Dhanushka, a software engineer from Sri Lanka. Each video takes one real engineering idea (B-Tree indexes, the CAP theorem, microservices, NTP, password hashing, Diffie-Hellman) and explains it simply with animation, in minutes.

🗄️ Database internals: indexing, B-Trees, search algorithms
🏗️ System design and distributed systems: CAP, microservices, cloud architecture
🔐 Security fundamentals: hashing, encryption, famous vulnerabilities
💥 Internet disasters: the typos, leap seconds and cosmic rays that took systems down
🤖 AI explained: how LLMs and neural networks actually behave

New Shorts every week and deeper explainers every two weeks. Subscribe if you like knowing why things work, not just how to use them.