Marcio Cunha

Technical Articles

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

All categoriesArquiteturaAutomaçãoBackendCarreiraDevOpsEletrônicaEngenhariaFrontendHardwareIANegóciosProdutividadeRedes
ArquiteturaBackend•4 min

Multi-Tenant Architectures: Rigid Data Isolation and Dynamic Sharding

Learn how to design scalable multi-tenant systems combining strict corporate data isolation and dynamic sharding to ensure high performance without bottlenecks.

FrontendBackend•4 min

Web Performance Optimization with Server-Timing and Component Profiling

Learn how to track hidden bottlenecks in web applications using the Server-Timing API combined with real-time component profiling to deliver instant page loads.

BackendArquitetura•6 min

Building Asynchronous Payment Systems with Exactly-Once Guarantees and Outbox Pattern in Go

Learn how to design resilient payment architectures in Go using the Outbox pattern to ensure financial transactions are never lost or duplicated across unstable networks.

BackendArquitetura•4 min

Resilient Microservices Architecture with Exponential Backoff and Shared Circuit Breakers

Learn how to build highly fault-tolerant distributed systems using smart retry strategies and shared network protection mechanisms.

FrontendBackend•4 min

Reactive State Management with Native JavaScript Proxies

Learn how to build a lightweight and efficient reactive state system using only native JavaScript features without heavy external libraries.

BackendArquitetura•5 min

Query Optimization and Execution Plans with Partial and Hash Indexes in Relational Databases

Learn how partial and hash-based indexes transform execution plans and accelerate complex queries in relational databases.

BackendEngenharia•3 min

Legacy Code Refactoring with Property-Based Approaches and Mutation Testing

Learn how to rescue fragile legacy systems using property-based testing and mutation simulations, ensuring mathematical safety when rewriting old software.

BackendArquitetura•5 min

Designing Fault Tolerant Systems with Hierarchical Circuit Breakers and Graceful Degradation

Learn how to build highly resilient architectures by combining cascading flow breakers with graceful degradation strategies to keep systems operational during partial failures.

BackendArquitetura•5 min

Outbox Pattern Implementation with Debezium and Kafka for Transactional Data Synchronization

Learn how to ensure data consistency in microservices using the Outbox pattern, Debezium, and Apache Kafka without losing events or corrupting the relational database.

BackendArquitetura•5 min

Dead-Letter Queue Management and Asynchronous Event Reprocessing in Microservices

Learn how to design robust strategies to handle processing failures in distributed systems using dead-letter queues and controlled asynchronous reprocessing.