Marcio Cunha

Technical Articles

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

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DevOpsArquitetura•4 min

Immutable Secrets Management in Kubernetes Clusters with External Secrets Operator and HashiCorp Vault

Learn how to synchronize secrets securely and automatically in Kubernetes environments using the External Secrets Operator integrated with HashiCorp Vault, ensuring governance and immutability.

RedesDevOps•4 min

Encrypted Traffic Inspection with eBPF and KTLS for Application Layer Security Monitoring

Learn how combining eBPF and KTLS enables efficient encrypted traffic inspection at the application layer without sacrificing performance or system security.

ArquiteturaDevOps•5 min

Predictive Modeling of Multi-Cloud Data Transfer Costs for TCO Reduction in Hybrid Architectures

Learn how to predict and optimize hidden public cloud data traffic costs to slash TCO in complex hybrid architectures using mathematical modeling.

DevOpsProdutividade•5 min

Terminal Ergonomics and Cognitive Mapping: Optimizing Tmux and Zsh Work environments

Transform your command line into a natural extension of your thought process, reducing mental fatigue and structuring complex workflows with Tmux and Zsh.

ArquiteturaDevOps•5 min

Reliability Engineering: Mitigating Cascading Failures in Graceful Degradation Systems

Learn how to build resilient systems that prevent cascading failures using graceful degradation to keep core services running under severe stress.

DevOpsArquitetura•3 min

Continuous Infrastructure Compliance Auditing with OPA and Rego Rules in CI/CD Pipelines

Learn how to enforce security and compliance policies directly in infrastructure as code using OPA and the Rego language inside continuous integration pipelines.

DevOpsArquitetura•5 min

Load Testing Standardization with k6, InfluxDB and Grafana for SLA Validation

Learn how to build a robust load testing pipeline combining k6, InfluxDB, and Grafana dashboards to monitor and validate SLAs for modern applications.

DevOps•4 min

Linux Kernel Hardening and Syscall Auditing with seccomp and AppArmor in Production

Learn how to harden the Linux kernel in production environments using seccomp to filter system calls and AppArmor for mandatory access control, reducing the attack surface of critical applications.

ArquiteturaDevOps•3 min

Distributed Storage Architecture with MinIO and NVMe Caching Layers

Learn how to build high-performance distributed storage using MinIO coupled with NVMe cache layers to eliminate I/O bottlenecks in enterprise environments.

RedesDevOps•5 min

Anycast Routing with BGP and Layer 4 Load Balancing Using XDP and eBPF

Learn how to combine Anycast network routing via BGP with ultra-fast packet processing using XDP and eBPF to build a highly resilient, low-latency Layer 4 load balancing architecture.