Andy Author

3 days ago · 1 min read

Introduction to React Hooks

React Hooks let you use state and lifecycle features inside function components, which is why class components have quietly disappeared from most codebases. We cover useState for local state, useEffe…

Andy Author

Yesterday · 1 min read

Getting Started with Node.js

Node.js lets you run JavaScript on the server, and the fastest way to understand it is to build something small. In this guide we set up a project, install dependencies with npm, and write an HTTP ser…

Andy Author

12 Oct 2026 · 1 min read

Securing an Express API: The Baseline

Before any clever security work, there is a baseline that takes an afternoon and blocks most opportunistic attacks. Helmet sets sensible response headers. A CORS allowlist stops arbitrary origins fro…

Andy Author

17 Oct 2026 · 1 min read

Writing Tests You Will Not Delete Next Month

Most abandoned test suites were not badly written — they were coupled to implementation details that changed. A test that breaks every time you rename a private function is a liability. We look at te…

Maya Okonkwo

21 Oct 2026 · 1 min read

Dockerising a Node API from Scratch

'It works on my machine' is a container-shaped problem. We build an image for an Express API one instruction at a time and explain what each layer costs. Multi-stage builds keep compilers out of the…

Maya Okonkwo

5 days ago · 1 min read

Postgres Indexes: When They Help and When They Hurt

An index is a trade: faster reads in exchange for slower writes and more disk. Adding one to every column is a reliable way to make an application slower overall. We start with EXPLAIN ANALYZE and le…