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Writing / Field notes

Thinking out
loud.

Practical notes on software architecture, platform engineering, AI systems, and the lessons hidden between deployments.

01
AR
/NOTES
Frontend 7 min read

Lit Components in a React App: A Practical Setup Guide

A walkthrough of setting up Lit, writing a custom element, and integrating it into a React app — with a working demo component and the gotchas that cost the most time.

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02

Observability

Grafana Faro setup for BrowserRouter, createBrowserRouter, and no router

How to set up Grafana Faro route tracking for all three cases — legacy BrowserRouter with FaroRoutes, data router createBrowserRouter with withFaroRouterInstrumentation, and apps with no router at all.

JUL 19, 2026 3 min read
03

Platform Engineering

What building an Internal Developer Platform taught me

Notes on creating paved roads, useful abstractions, and self-service infrastructure that developers actually want to use.

JUL 08, 2026 8 min read
04

Backend

Designing low-latency APIs in Go

The practical choices behind reducing response latency—from profiling and concurrency to caching and database access.

JUN 19, 2026 6 min read
05

Generative AI

RAG beyond the demo: building for trust

A grounded approach to retrieval quality, evaluation, citations, and failure modes in production AI applications.

MAY 28, 2026 7 min read

No noise. Just useful ideas.

Occasional notes from the engineering floor.

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© 2026 Aryan Ranjan

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