Marcio Cunha

Technical Articles

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

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Featured Articles
SpotlightBackendArquitetura•14 min

Table Partitioning and Partial Indexing in PostgreSQL at Scale

Learn how native table partitioning and partial indexing in PostgreSQL solve performance bottlenecks in databases processing billions of rows under high write and read loads.

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Arquitetura•12 min

SSRF Vulnerability Mitigation in Microservices with Reverse Proxies and Network Restriction

Learn how to protect distributed architectures against Server-Side Request Forgery attacks using smart reverse proxies, rigorous network restriction, and strict payload validation.

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Backend•12 min

PostgreSQL Vacuum: Why Databases Need to Clean Removed Data

Learn how PostgreSQL handles deletions and updates through MVCC and why the Vacuum routine is essential to prevent disk bloat and performance degradation.

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BackendArquitetura•12 min

How a Digital Signature Works and Why It Is Not Ordinary Encryption

Discover the engineering behind digital signatures, understanding why they ensure authenticity rather than hiding data contents.

BackendArquitetura•12 min

Idempotency in REST APIs and Contract Versioning

Learn how to safeguard your APIs against network failures using idempotency keys in distributed databases and explore techniques to evolve contracts without breaking legacy clients.

FrontendArquitetura•12 min

How Graphics Acceleration Works in Modern Web Browsers

Learn how modern web browsers offload heavy rendering tasks from the CPU to the GPU, ensuring smooth animations and high-performance web interfaces.

HardwareArquitetura•12 min

Secure Enclave and Trusted Execution Environment: Protecting Data in Hardware

Discover how trusted execution environments and secure enclaves isolate workloads and encrypt data directly within processor silicon, preventing software and physical attacks.

ArquiteturaDevOps•12 min

Object Storage vs Block Storage vs File Storage: Choose the Right Data Architecture

Understand the fundamental differences between Object Storage, Block Storage, and File Storage. Learn when to apply each storage architecture to ensure performance, scalability, and cost efficiency.

BackendArquitetura•12 min

How S3 Storage Works and Modern Data Architecture Standards

Explore how S3 storage revolutionized data persistence in modern applications, replacing traditional file servers with a distributed, scalable, and highly available architecture.

ArquiteturaRedes•12 min

Edge Computing: Architecture Decisions for Processing Data Near Users

Learn how edge computing reduces latency and optimizes bandwidth by decentralizing data processing to servers located close to end users.

RedesArquitetura•12 min

Anycast: How a Single IP Address Exists in Multiple Places Worldwide

Learn how Anycast routing allows a single IP address to be announced simultaneously across multiple global locations, optimizing data delivery, reducing latency, and ensuring high availability against denial-of-service attacks.

BackendArquitetura•11 min

Polling vs Webhooks: How to Choose the Best Integration Strategy

Discover the fundamental differences between polling and webhooks for detecting changes in external systems, evaluating infrastructure costs, latency, and bandwidth.

BackendArquitetura•12 min

Webhooks in Practice: How to Build Event-Driven System Integrations

Learn how webhooks operate in modern software engineering. Discover how to exchange data in real time between systems without overwhelming servers with repetitive requests.