Stop Paying for LLMs — Run Your Own Locally

If you’re tired of hitting limits, waiting on slow responses, or paying monthly just to use an online model, there’s a better option. With Ollama, you can run powerful LLMs directly on your own machine.

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.

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

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.

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

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

llm

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.

proxy

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

Meilisearch

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

graph

Implementing Graphs in Golang Without Starting from Scratch

Have you ever imagined a world without connections? Think about your social media full of random unknown people in your follow recommendations, maps not showing the shortest direction between two destinations, or file imports turning into a mess of unrelated modules after compiling. This would be hard even to imagine,

networking

From Packet Capture to Threat Hunting with Wireshark

Learn how to leverage Wireshark’s powerful features for effective network analysis and security monitoring

automation

Automate the Boring Stuff! Check Out This Open-Source Tool

Discover how to automate everyday tasks using n8n—an open-source workflow tool.

Why Every Tech Org Needs an Internal API Map

Software Engineering is a 75 year old field. The idea of "API" has helped the field grow all this time. In the future, with AI, the number of APIs are going to explode. How are we as a field going to modernize?

ansible

Why We Chose Ansible for Infrastructure as Code

We’ve always believed in building infrastructure like we write software: version-controlled, repeatable, and disposable when needed. For two years, we had credits on AWS, and during that time, we manually spun up servers and ran a self-hosted stack manually: * Nomad + Consul + Vault for orchestration and secrets * NGINX for reverse

security

Why Linux Isn’t Immune: The Rising Tide of Malware and How to Respond

Linux powers an estimated 90% of the cloud workload worldwide. Linux-based servers are an engineer's favorite when it comes to developing world-class products. But the idea that Linux is inherently secure is a common misconception. In 2022 alone there were around 1.7 million new Linux malware samples.

tree-sitter

Learn How to Navigate Code Structures and Extract Details Using Tree-sitter

Unlock the power to explore and extract any part of your code effortlessly with Tree-sitter

CAN

Build Your CAN Bus Skills: A Beginner’s Guide to Using CAN in Your Projects

In this article, we’ll dive into the CAN (Controller Area Network) Bus protocol by building a hands-on setup using the MCP2515 CAN Bus Module and an Arduino board. CAN is a high-reliability, long-range communication standard designed for microcontrollers and embedded systems—without the need for a central host. It