Engineering Notes

Practical guides for AI, automation, and product engineering.

Field notes from systems I build: agents, n8n workflows, developer tools, micro-SaaS, and production architecture.

9Published articles

1/1Current page

AllActive track

Learning Tracks

Essays, tutorials, and systems notes.

AI Agents Automation Dev Tools Japanese Learning

Browse Library

Showing 1-9 of 9 articles

All Salesforce AI Agents Python AI Automation Dev Tools Micro SaaS Web Development

Start with the newest deep dive

DevelopmentReact State Management: Context API vs. Redux & Building a Theme Switcher

Avnish Yadav – February 21, 2026 · 7 MIN READ

React State Management: Context API vs. Redux & Building a Theme Switcher

Stop over-engineering your React apps. Here is a definitive technical breakdown of when to use Redux versus the Context API, followed by a practical implementation of a zero-boilerplate Theme Switcher.

DevelopmentReact Architecture: Mastering State and Props in Class vs. Functional Components

Avnish Yadav – February 21, 2026 · 7 MIN READ

React Architecture: Mastering State and Props in Class vs. Functional Components

A deep dive into the evolution of React state management. We build a dual-implementation counter system to analyze the architectural shift from Object-Oriented Class components to the functional composition of Hooks.

DevelopmentMastering React Hooks: From useState to Building a Production-Ready Custom Hook

Avnish Yadav – February 21, 2026 · 7 MIN READ

Mastering React Hooks: From useState to Building a Production-Ready Custom Hook

Move beyond the syntax of useState. Learn how to architect reusable logic by building a robust 'useForm' hook that handles state, validation, and submission cleaner than any library.

Practical guides for AI, automation, and product engineering.

Essays, tutorials, and systems notes.

Start with the newest deep dive

React State Management: Context API vs. Redux & Building a Theme Switcher

React Architecture: Mastering State and Props in Class vs. Functional Components

Mastering React Hooks: From useState to Building a Production-Ready Custom Hook

Secure Frontend Auth: The Definitive Guide to JWTs, Cookies, and Storage Strategies

Mastering Chrome DevTools: Debugging Techniques That Save Hours of Development Time

Mastering Asynchronous Operations with JavaScript Promises: A Builder's Guide

From Selectors to BEM: CSS Concepts You Must Know for Professional Projects

Mastering the Primitives: A Builder's Guide to JavaScript Data Types and Functions

Beyond Frameworks: Practical DOM Manipulation Techniques for High-Performance UIs