Marcio Cunha

Technical Articles

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

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DevOpsRedes•4 min

Zero Trust Security in Container Meshes Using eBPF Sidecars

Learn how to enforce Zero Trust security policies in container environments using eBPF-based sidecars to intercept network traffic at the kernel layer without performance bottlenecks.

AutomaçãoRedes•4 min

Integrating Programmable Logic Controllers with Cloud Messaging Systems via Secure MQTT

Learn how to connect industrial Programmable Logic Controllers (PLCs) directly to cloud platforms using the MQTT protocol with TLS encryption. Bridge the factory floor to the corporate digital ecosystem securely and with low latency.

HardwareRedes•2 min

Building DIY NAS Servers with HBA Controllers in IT Mode and ZFS Monitoring

Learn how to design a home storage server using HBA cards in IT mode for direct disk communication and ZFS file systems.

AutomaçãoRedes•4 min

Implementation of OPC UA to MQTT Sparkplug B Protocol Translation Gateways with Local SQLite Persistence for Connection Drop Mitigation

Learn how to build a robust gateway that translates industrial data from OPC UA to MQTT Sparkplug B, using a local SQLite database to prevent telemetry loss during network outages.

AutomaçãoRedes•5 min

Bus Contention Diagnosis in Profibus-DP Industrial Networks Through Waveform Analysis with Digital Storage Oscilloscopes

Learn how to identify and troubleshoot bus contention issues in Profibus-DP industrial networks using digital storage oscilloscopes to capture waveforms and ensure plant stability.

DevOpsRedes•3 min

Hardware Metrics Collection Architecture with Prometheus and Node Exporter in Bandwidth-Constrained Environments

Learn how to architect hardware metrics collection in low-bandwidth environments using Prometheus, Node Exporter, compression, and distributed scraping strategies.

RedesDevOps•4 min

Implementation of WireGuard Tunnels with Policy-Based Routing for Link Failover in Distributed Industrial Environments

Learn how to build a resilient industrial network combining WireGuard tunnels and policy-based routing to ensure continuous operation during connectivity failures.

AutomaçãoRedes•5 min

Implementation of Modbus RTU to BACnet IP Protocol Translation Gateways in BMS Systems

Learn how to integrate legacy building automation networks running Modbus RTU with modern BMS platforms using BACnet IP, overcoming register mapping and latency challenges.

RedesAutomação•5 min

Dynamic Traffic Routing and Link Redundancy in Industrial SD-WAN Networks with OpenWRT

Learn how to design resilient industrial networks combining dynamic routing and OpenWRT to ensure high availability in critical manufacturing automation environments.

DevOpsRedes•4 min

Resource Allocation Policy Optimization and Overcommitting in Proxmox VE Virtualization Clusters

Learn how to manage resource allocation and memory and CPU overcommitting in Proxmox VE clusters to maximize virtual machine density without compromising system stability.