Marcio Cunha

Technical Articles

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

All categoriesArquiteturaAutomaçãoBackendCarreiraDevOpsEletrônicaEngenhariaFrontendHardwareIANegóciosProdutividadeRedes
ProdutividadeDevOps•4 min

Reducing Context Switching Through Tiling Window Manager Workenvironments

Discover how tiled window managers mathematically organize screens, eliminating visual friction and drastically reducing context switching in daily work.

BackendDevOps•4 min

Root Cause Analysis Methodology Based on Low-Overhead Distributed Tracing

Learn how to track failures in modern systems without dragging down your application. Explore practical telemetry strategies with minimal performance impact for fast error isolation.

RedesDevOps•2 min

Distributed Cloud Network Security with eBPF and Cilium

Discover how to enforce runtime security policies using eBPF and Cilium to protect Kubernetes clusters spread across multiple clouds without performance loss.

DevOps•4 min

Container Infrastructure Monitoring with Prometheus Grafana Mimir and Long Term Metrics Collection

Learn how to scale container metric retention by combining Prometheus local collection with Grafana Mimir's horizontal scalability and long-term object storage.

RedesDevOps•5 min

Implementation of Layer 3 Tunnels and Encryption with IPsec and BGP Anycast for High Connectivity Availability

Learn how to build resilient networks by combining Layer 3 encryption with dynamic Anycast routing to eliminate single points of failure and ensure seamless corporate redundancy.

RedesDevOps•5 min

Network Virtualization and Internal Traffic Routing in Homelabs with Proxmox and OpenWrt

Learn how to isolate traffic, optimize VLANs, and build an efficient virtualized network edge using Proxmox VE and an OpenWrt LXC container in your home lab.

DevOpsEngenharia•5 min

Site Reliability Engineering: Practical Implementation of Error Budgets and Burn-Rate Alerting Policies

Learn how to structure error budgets and configure intelligent alerting policies based on burn rates in SRE. Discover how to balance delivery speed and operational stability without false alarms.

DevOps•4 min

Managing Infrastructure Modifications at Scale with Terraform and Static Security Policy Validation Using Checkov

Learn how to structure large-scale infrastructure changes using Terraform and enforce automated security compliance with Checkov static tests.

DevOpsArquitetura•5 min

CI/CD Pipelines with GitHub Actions, Docker and Zero-Downtime

Learn how to build a highly reliable continuous delivery pipeline using GitHub Actions, efficient multi-stage Docker packaging, and seamless deployment strategies for production environments.

DevOpsArquitetura•4 min

Secrets and Tokens Management in Self-Hosted Environments: Argon2id, Rotation, and Best Practices

Learn how to secure your own servers against data leaks using modern Argon2id cryptography, scheduled credential rotation, and strict personal access token policies.