web performance
Why Your Page Feels Slow (and Hurts Your PageSpeed Score): Render Blocking and Critical CSS Explained
Learn how render blocking CSS slows your site and how Critical CSS can help you boost your PageSpeed score.
Latest
svg
A Simple Guide to SVG and How It Works
When building logos, icons, or illustrations for the web, SVG (Scalable Vector Graphics) is one of the most powerful tools in a developer’s toolkit. Unlike raster images (PNG, JPEG, WebP), SVG is mostly resolution-independent and code-driven, meaning your graphics almost always stay sharp, lightweight, and infinitely scalable without quality
linux
Story of a TCP Packet: An Intuitive Entrypoint To Linux Networking
This post traces a TCP packet’s journey through Linux, explaining interfaces, iptables tables and chains, and the networking stack with an analogy, example, and technical details for engineers.
tcp
How TCP and UDP Protocols Work: Understanding Their Critical Role in Internet Communication
How does data travel from a server to your screen in a split second? What is the logic behind it? What rules and protocols does it use that make it all work?
Go
Fan-In and Fan-Out in Go: Parallelism Made Simple
Learn how to distribute work across multiple goroutines and merge their results back into a single stream using Go's Fan-Out and Fan-In patterns. We'll break down these powerful concurrency patterns with practical examples you can use right away.
seo
Control the SEO Ecosystem: Tags, Sitemaps, Backlinks, and Who Really Controls Search
A practical guide to metadata, sitemaps, authority, search engines, and how it all actually connects
postgres
Turning PostgreSQL into a Robust Queue for Go Applications
How to build a reliable task queue in Go using PostgreSQL’s built-in features—no extra infrastructure needed.
llm
LLM Fundamentals: How Large Language Models Work
Hello, I'm Maneshwar. I'm building *Free DevTools*, a single hub for developers with 50,000+ free resources, icons, cheat sheets, and TLDRs. No login, unlimited downloads.
seo
Is Your Website Fast Enough? What Google's Core Web Vitals Reveal
Want to know if your website is fast enough? Google's Core Web Vitals measure three key things: how quickly your page loads, how fast it responds to clicks, and whether it jumps around while loading. Fix these, and you'll rank better while giving users a smoother experience.
graphql
These Key Features of GraphQL make it Unique among Other API Technologies
When building modern applications, especially for mobile devices, how you get data from the server to the client is everything. For years, REST has been the standard for API design, but it often comes with frustrations. Let's look at the problems that led to a new way of
ebpf
eBPF 101: Your First Step into Kernel Programming
eBPF has revolutionized Linux observability and security by allowing sandboxed programs to run in the kernel without changing kernel source code or loading modules
ai
From Logic to Linear Algebra: How AI is Rewiring the Computer
For decades, computers were built for logic -- branching decisions, compilers, databases. But AI flipped the script: today's machines are being rebuilt for one thing above all else -- multiplying matrices at massive scale