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?

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.

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

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 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.

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.

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 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

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

Unboxing the Black Box: Understanding LLMs with Reverse Mechanistic Localization

Instead of just treating LLMs as black boxes, RML helps us understand which parts of the model contribute to specific outputs.

The Proxy Playbook: Building Fast, Secure Middle Layers in Go

You’re in the middle of a Teams call with your DevOps crew when a service starts throwing alerts. Requests are piling up, some users are getting errors, and the backend logs look like they’ve been hit by a firehose. You could spin up more servers, but that’s

Simple Tweaks That Can Make Your Meilisearch Faster

Meilisearch is a really powerful search engine; it’s fast, open-source, and easy to set up. But if you don’t configure it properly, especially the indexing and attributes, it can start to feel slow. Let’s say you set up an index with a few thousand records and start