Marcio Cunha

Technical Articles

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

All categoriesArquiteturaAutomaçãoBackendCarreiraDevOpsEletrônicaEngenhariaFrontendHardwareIANegóciosProdutividadeRedes
BackendArquitetura•4 min

High-Frequency Transaction Processing with Row Version Optimistic Locks in SQL Databases

Learn how to architect database concurrency using line-version optimistic locking, avoiding pessimistic blocking bottlenecks in high-throughput systems.

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.

BackendArquitetura•5 min

Ahead-Of-Time Compilation of Business Rules in WebAssembly for Runtime Decision Engines

Learn how ahead-of-time compilation converts complex business rules into WebAssembly to supercharge runtime decision engines with strict isolation and high performance.

BackendArquitetura•4 min

Preventing Cascading Failures in Microservices with Adaptive Circuit Breakers

Learn how to prevent distributed system collapses using adaptive circuit breakers powered by machine learning. Discover strategies to replace static thresholds with dynamic responses to real-world traffic.

BackendEngenharia•4 min

Memory Allocation Optimization in Runtime Engines with Region-Based Garbage Collection

Explore how modern runtime engines leverage region-based garbage collection to eliminate performance bottlenecks and reduce application pause times.

BackendRedes•5 min

Application Layer Security Policy Implementation with WebAssembly Proxies in Service Meshes

Learn how to enforce traffic inspection, authentication, and threat mitigation at the application layer using WebAssembly integrated directly into service mesh proxies.

BackendArquitetura•5 min

Distributed Transaction Management with Orchestrated Saga Patterns in High Concurrency Microservices

Learn how to maintain data integrity in high-scale systems without relying on slow locks. Understand the practical operation of the Orchestrated Saga pattern in microservices.

BackendDevOps•4 min

Reducing Software Deployment Failure Rates with In-Memory Feature Flags

Learn how to eliminate network bottlenecks and reduce critical software deployment failures by utilizing feature flags evaluated directly in local application memory.

BackendArquitetura•5 min

Domain Modeling with Event Sourcing and Decoupled Projections in Relational Databases

Learn how to build resilient systems using Event Sourcing in traditional relational databases, separating historical events from read tables for maximum performance and auditability.

BackendArquitetura•4 min

Distributed Transaction Processing with Multi-Paxos Consensus Protocols in Critical Microservices

Learn how to coordinate consistent data across multiple independent services using the Multi-Paxos algorithm, eliminating concurrency flaws in high-scale systems.