Full-stack developer based in Mohali, India. I build scalable React, Node.js and PostgreSQL products for startups, agencies and founders, including platforms serving 50,000+ users.https://charanpreet.me/https://charanpreet.me/blog/ai-systems-and-classifications/https://charanpreet.me/blog/ai-systems-and-classifications/A catalog of AI systems from rules to frontier models, with a task-size scale and pairing rules so you match the machine to the job instead of the hype.Mon, 13 Jul 2026 00:00:00 GMThttps://charanpreet.me/blog/api-and-interface-standards/https://charanpreet.me/blog/api-and-interface-standards/A history of API standards from RPC and SOAP to REST, OpenAPI, and agent protocols - Where tooling and adoption, not standards bodies, chose the winners.Sat, 04 Jul 2026 00:00:00 GMThttps://charanpreet.me/blog/capacity-planning-is-multiplication/https://charanpreet.me/blog/capacity-planning-is-multiplication/Size any system from one number — monthly active users — with a chain of multiplications and a few benchmark-backed constants. Orders of magnitude, not exact.Wed, 24 Jun 2026 00:00:00 GMT