Technical Articles

Practical articles, in-depth tutorials, and architectural insights on software engineering, AI, and systems.

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RedesDevOps•4 min

How to test DNS resolution and response time with dig

Learn how to use the dig command in the terminal to diagnose propagation failures, latency, and A, CNAME, and MX records on DNS servers.

EletrônicaHardware•6 min

How to measure power supply ripple with an oscilloscope

Learn the practical step-by-step guide to measuring ripple and noise in switching power supplies using an oscilloscope on the electronics bench.

DevOps•4 min

How to clean Docker cache and free up disk space

Learn how to use the docker system prune command to delete orphan images, stopped containers, and recover storage on your server or dev machine.

Negócios•6 min

Daily Tech Radar: 10 essential AI and DevOps updates

Explore the top 10 technology news of the day, covering breakthroughs in artificial intelligence, DevOps tooling, and direct impacts on the corporate market.

Backend•4 min

How to set up JWT authentication in Node.js APIs

Learn JSON Web Token fundamentals and see how to implement protected routes in a Node.js Express backend from scratch.

DevOps•6 min

How to use awk to extract log columns in terminal

Learn how to manipulate text files and filter structured logs in Linux environments quickly using the standard awk command without external dependencies.

HardwareEletrônica•5 min

GPU visual artifacts? How to test failures with FurMark

Learn how to diagnose visual glitches and thermal instabilities in graphics cards using the FurMark utility for stress testing.

BackendDevOps•5 min

Node.js using too much memory? How to find leaks in production

Learn how to capture and analyze memory heaps in production Node.js applications using native tools to identify and fix critical performance bottlenecks.

RedesDevOps•4 min

How to block malicious traffic at the edge with eBPF and XDP

Learn how to implement high-performance packet filters directly in the Linux kernel using eBPF and XDP to block edge attacks efficiently.

EletrônicaHardware•4 min

How to test the motherboard NVMe connector with a multimeter

Learn how to perform a step-by-step electrical diagnostic of the M.2 NVMe slot using a bench multimeter, identifying power failures and PCIe data lines.