Technical Articles

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

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RedesDevOps•5 min

How to Configure SPF, DKIM, and DMARC Records in DNS for Sender Domain Validation

Learn how to structure your company's email authentication using SPF, DKIM, and DMARC DNS records, shielding your domain against identity spoofing and improving inbox delivery rates.

BackendDevOps•5 min

Resend vs Brevo: Architectural Criteria for Choosing a Transactional Email Service

Discover the crucial engineering differences between Resend and Brevo for transactional messaging. We analyze delivery, APIs, webhooks, and operational costs.

HardwareDevOps•5 min

ZFS in Home Servers with Mini PCs and External Storage

Learn how to build a resilient home server using Mini PCs and ZFS, ensuring data integrity and high performance without wasting hardware resources.

DevOpsAutomação•4 min

How to Automate Quick Tunnel Initialization with Package.json Scripts

Learn how to integrate secure network tunnels directly into your local development workflow using Node.js scripts, eliminating manual setup.

RedesDevOps•4 min

Difference Between Exposing Common HTTP Services and Running Raw TCP Traffic via Quick Tunnel

Explore the engineering mechanics behind exposing standard web applications versus forcing raw TCP packet traffic through quick tunnels. Understand protocol limits, security, and operational trade-offs.

DevOpsRedes•5 min

How to Use Quick Tunnels for Debugging WSL 2 Applications

Learn how to securely expose local services running inside the Windows Subsystem for Linux using fast tunnels, streamlining tests with webhooks and external APIs.

RedesDevOps•5 min

How Automatic End-to-End Encryption Works in Cloudflared

Understand the engineering mechanisms behind Cloudflared tunnels, which establish automatically generated end-to-end encryption without requiring complex manual certificates.

FrontendDevOps•4 min

How to share a frontend demo with clients without server deployment

Learn practical methods to send functional prototypes and web interfaces to clients without setting up staging servers, using local tunnels and peer-to-peer tools.

RedesDevOps•6 min

How to Point Cloudflare Quick Tunnel to Multiple Services Changing Local Ports

Learn how to expose different local applications to the internet using Cloudflare Quick Tunnel without custom domains or complex DNS setups. The article details port mapping and the practical use of temporary tunnels for testing.

RedesDevOps•5 min

Bandwidth Limits and Concurrency in Free Ephemeral Tunnels

Learn how free ephemeral tunnels handle bandwidth and concurrency limits, the real impacts on local testing, and how to avoid performance bottlenecks.