The Best Way to Handle User Login
Exploring modern authentication strategies for public-facing apps — from passwords to passkeys, and how to unify them securely.
Kosumi.dev
Reflections on tech, life, and finance — powered by Next.js and Tailwind CSS.
Latest posts
Other blogs I find helpful
Just a list of blogs that I like. Keep updated
k3s and tailscale networking problems
coredns forward and CNI fix
Building Your Own Cloud Like Legos: reclaiming control of your data, services and infrastructure
The 2025 AWS outage exposed how dependent we are on centralized cloud giants that profit from our data and control our digital lives through surveillance and censorship. Building your own cloud restores autonomy: connect devices with Tailscale, orchestrate apps using k3s, route traffic securely via cloudflared tunnels, and ensure reproducibility with NixOS. Like assembling Legos, you can mix local…
Setting up my second blog
Some thoughts on life and frontend development
What useful services you can self host in your k3s cluster?
A look at practical, privacy-friendly and productive services to self-host in your lightweight Kubernetes (k3s) cluster.
Release of Tailwind Nextjs Starter Blog v2.0
Release of Tailwind Nextjs Starter Blog template v2.0, refactored with Nextjs App directory and React Server Components setup.Discover the new features and how to migrate from V1.
New features in v1
An overview of the new features released in v1 - code block copy, multiple authors, frontmatter layout and more
Introducing Multi-part Posts with Nested Routing
The blog template supports posts in nested sub-folders. This can be used to group posts of similar content e.g. a multi-part course. This post is itself an example of a nested route!
Introducing Tailwind Nextjs Starter Blog
Looking for a performant, out of the box template, with all the best in web technology to support your blogging needs? Checkout the Tailwind Nextjs Starter Blog template.
Deriving the OLS Estimator
How to derive the OLS Estimator with matrix notation and a tour of math typesetting using markdown with the help of KaTeX.
Images in Next.js
In this article we introduce adding images in the tailwind starter blog and the benefits and limitations of the next/image component.
Markdown Guide
Markdown cheatsheet for all your blogging needs - headers, lists, images, tables and more! An illustrated guide based on GitHub Flavored Markdown.
The Time Machine
The Time Traveller (for so it will be convenient to speak of him) was expounding a recondite matter to us. His pale grey eyes shone and twinkled, and his usually pale face was flushed and animated...
O Canada
The scenic lands of Canada featuring maple leaves, snow-capped mountains, turquoise lakes and Toronto. Take in the sights in this photo gallery exhibition and see how easy it is to replicate with some MDX magic and tailwind classes.
Sample .md file
Example of a markdown file with code blocks and syntax highlighting