Marcio Cunha

Technical Articles

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

All categoriesArquiteturaAutomaçãoBackendCarreiraDevOpsEletrônicaEngenhariaFrontendHardwareIANegóciosProdutividadeRedes
NegóciosArquitetura•4 min

Legacy Infrastructure Modernization Return on Investment Assessment Based on TCO Metrics

Learn how to calculate Total Cost of Ownership and ROI to justify legacy system modernization. Discover real metrics to balance operational costs and technical efficiency.

ArquiteturaBackend•4 min

Monolithic to Microservices Architecture Transition: Risk Mitigation and Contract Governance

Learn how to plan the transition from a monolithic system to microservices while mitigating systemic failures and securing stable API contracts.

DevOpsArquitetura•3 min

Dynamic Secrets Management in Kubernetes Clusters with HashiCorp Vault and AppRole

Learn how to eliminate static passwords in Kubernetes clusters using HashiCorp Vault with AppRole authentication to generate ephemeral credentials at runtime.

BackendArquitetura•4 min

Banking Domain Modeling with Hybrid Consistency and CRDTs

Learn how to structure decentralized financial systems by combining hybrid consistency and conflict-free replicated data types to eliminate global scaling bottlenecks.

FrontendArquitetura•4 min

State Isolation in High-Density Web Applications with Primitive Signals and Fine-Grained Reactivity

Learn how state isolation with signals and granular reactivity eliminates unnecessary re-renders in high-density web interfaces.

ArquiteturaDevOps•5 min

Resilient Messaging Architecture with Apache Pulsar for Isolated Multi-Tenancy in Public Cloud

Learn how to securely isolate workloads using Apache Pulsar in public cloud environments, ensuring resilience and high performance for multiple clients on the same cluster.

BackendArquitetura•5 min

Event-Driven Domain Modeling for Payment Systems with Strict Transactional Consistency

Learn how to architect highly resilient payment systems combining domain modeling, business events, and strict transactional consistency in distributed environments.

FrontendArquitetura•4 min

Design Systems with Web Components and Shadow Dom Across Frameworks

Learn how to build reusable UI components that run natively in React, Angular, and Vue without rewriting code. Discover how modern ecosystems solve design system fragmentation.

BackendArquitetura•6 min

Building Secure Authentication Servers with OAuth 2.1 and FIDO2

Learn how to design secure digital identity architectures combining OAuth 2.1, OpenID Connect, and FIDO2 security keys against credential theft.

BackendArquitetura•4 min

Multi-Tenant Microservices Architecture and Monetization Strategies in Shared Databases

Learn how to structure shared databases in multi-tenant environments using microservices, balancing data isolation, operational costs, and efficient monetization models.