designdoc.tech
Engineering notes for people who ship
Minimal, readable playbooks for scaling systems, sharpening algorithms, and running reliable infra.
Latest Posts
Five most recent essays across all tracks.
The Evolution of DevOps: From Scripts to Platform Engineering
DevOps is no longer just about writing Jenkins files. It's about building Internal Developer Platforms (IDPs) that treat infrastructure as a product.
The Ultimate Guide to Engineering Design Docs
How to write RFCs and Design Docs that save weeks of coding time. Structure, examples, and best practices.
How to Choose a Database
A comprehensive guide to selecting the right database for your system design needs, covering SQL vs NoSQL, CAP theorem, and consistency models.
Arrays: The OG Data Structure (and Why They Still Matter)
Arrays explained the way you actually learn them — while learning them yourself.
The Why
Learning by Writing
I wasn't able to study effectively just by consuming content. So I started this series of notes. When I write, I learn. These are blueprints for my future self—and hopefully useful for you too.
Focus
Start a track and go deep
Pick a path and build mastery with connected notes and real trade-offs.