https://riwano.com/blog Technical write-ups on data science, ML engineering, AI systems, and building things. en riwanofariz@gmail.com (Riwano Fariz) Thu, 06 Aug 2026 00:00:00 GMT https://riwano.com/blog/what-happens-when-you-type-google-com https://riwano.com/blog/what-happens-when-you-type-google-com Thu, 06 Aug 2026 00:00:00 GMT It takes less than a second — but in that tiny moment, your request travels across countries, talks to multiple servers, establishes secure connections, and finally finds Google's homepage. Let's follow that journey. Networking DNS HTTP TLS Web https://riwano.com/blog/building-hirehoo-sso-authentication https://riwano.com/blog/building-hirehoo-sso-authentication Mon, 04 May 2026 00:00:00 GMT How I learned that SSO isn't just convenience—it's a trust signal. A deep dive into implementing Google OAuth 2.0, FastAPI token management, and why getting auth right determines whether users ever see your product. FastAPI OAuth2 Authentication Hirehoo Backend Security Lessons Learned https://riwano.com/blog/stop-picking-a-language-start-building https://riwano.com/blog/stop-picking-a-language-start-building Sat, 02 May 2026 00:00:00 GMT Choosing between Flutter, React, or any framework is the wrong question in 2026. Your value is no longer in writing code — it's in building systems that work. Mindset AI Career Building https://riwano.com/blog/nvidia-gtc-2026-everything-that-just-changed https://riwano.com/blog/nvidia-gtc-2026-everything-that-just-changed Wed, 18 Mar 2026 00:00:00 GMT Jensen Huang did not walk onto a stage this week to announce a faster chip. He announced a new era. Here is everything that happened at GTC 2026 — the 20th anniversary of CUDA — and what it actually means. AI NVIDIA GTC Infrastructure Agentic AI Robotics https://riwano.com/blog/building-smart-energy-forecasting-platform-india https://riwano.com/blog/building-smart-energy-forecasting-platform-india Mon, 16 Mar 2026 00:00:00 GMT A full development story — from a blank notebook to a RAG-powered forecasting dashboard covering India's 27 states, XGBoost v2 with R² 0.9951, and the painful code review that forced a 1,682-line monolith into clean modules. Python XGBoost Data Science RAG Streamlit India Energy