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

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Software EngineeringREST vs. GraphQL: A Frontend Engineer’s Reality Check

Avnish Yadav – February 21, 2026 · 7 MIN READ

REST vs. GraphQL: A Frontend Engineer’s Reality Check

Stop looking for a winner. In this build-focused guide, we implement a simple API consumer for both REST and GraphQL to uncover the real-world trade-offs in caching, payload size, and developer experience.

LearnDemystifying CORS, HTTP, and Security: A Builder’s Guide

Avnish Yadav – February 21, 2026 · 8 MIN READ

Demystifying CORS, HTTP, and Security: A Builder’s Guide

That red CORS error in your console isn't a bug—it's a feature. We dive deep into HTTP protocols, the browser's Same-Origin Policy, and how to secure your automation agents and micro-SaaS APIs properly.