Marcio Cunha

Technical Articles

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

All categoriesArquiteturaAutomaçãoBackendCarreiraDevOpsEletrônicaEngenhariaFrontendHardwareIANegóciosProdutividadeRedes
DevOpsArquitetura•3 min

Orchestrating Canary Traffic Error Rate Rollbacks with Real-Time APM Metrics

Learn how to automate software version rollbacks in production by monitoring error rates and performance metrics in real time with APM tools.

DevOpsRedes•5 min

Kernel Namespace Isolation for Shared Memory Leak Mitigation in Dense Containers

Learn how rigorous kernel namespace isolation prevents shared memory failures and data leaks in high-density container environments.

RedesDevOps•4 min

MTLS Certificate Lifecycle Management in Ephemeral Environments with Key Hash Rotation

Learn how to manage mTLS security certificate rotation in ephemeral environments using key hashes to prevent downtime and maintain robust encryption.

DevOpsArquitetura•4 min

Mitigating EBS IOPS Bottlenecks with Dynamic Queue Depth Tuning in Orchestrators

Learn how to handle IOPS limits in cloud storage volumes by applying dynamic queue depth tuning strategies inside container orchestrators.

DevOpsArquitetura•4 min

Continuous Infrastructure Audit with AST-Based Policies in CI Pipelines

Learn how to use abstract syntax trees to audit infrastructure code and block security flaws before production deployment.

RedesDevOps•4 min

Implementation of Multi-Cluster Service Meshes with Proximity-Based Routing for Global Latency Reduction

Learn how to architect multi-cluster service meshes applying proximity-based routing to mitigate global latency across distributed cloud infrastructures.

HardwareDevOps•5 min

Energy Consumption Monitoring and Thermal Optimization in Homelab Servers

Learn how to extract temperature and power metrics from physical servers in your homelab using IPMI, scrape data with Prometheus, and visualize everything in Grafana.

DevOpsArquitetura•4 min

Immutable Configuration Management and Compliance Auditing in Multi-Tenant Clusters with OPA Policies

Learn how to secure multi-tenant clusters using access control policies and immutability with Open Policy Agent. Ensure continuous auditing and structural security in complex environments.

BackendDevOps•5 min

Zero-Downtime Database Schema Migrations Using Expand-Contract and Column Versioning

Learn how to perform structural changes in relational databases in production without taking applications offline. Discover how the expand-contract pattern and column versioning prevent bottlenecks and data loss.

EngenhariaDevOps•4 min

Measuring Return on Investment in Legacy Code Refactoring Through Production Defect Reduction Metrics

Learn how to calculate the Return on Investment (ROI) of legacy code refactoring by tracking production defect reduction and transforming technical debt into measurable business gains.