Technical Articles

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

All categories Arquitetura Automação Backend Carreira DevOps Eletrônica Engenharia Frontend Hardware IA Negócios Produtividade Redes

How to avoid memory leaks in JavaScript closures

Discover why closures can retain unwanted memory in the V8 engine and learn practical strategies to keep your application's heap clean.

Read article

IA•4 min

How to structure JSON in LLMs with Pydantic for APIs

Learn how to ensure structured and consistent outputs from language models using schema validation in Pydantic for production applications.

Read article

IA•4 min

How to implement semantic cache in LLMs to cut costs

Practical engineering guide to structure vector caching for LLM responses, reducing token consumption and inference latency at scale.

Read article

Backend•4 min

Slow database? How to find heavy queries in PostgreSQL

Learn hands-on how to inspect PostgreSQL logs and enable tracking for heavy queries without impacting your production environment.

IABackend•3 min

How to Implement Secure Function Calling with JSON Schema

Learn how to protect your artificial intelligence against malicious parameters using strict schema constraints to ensure structured responses.

BackendFrontend•5 min

How closures work in JavaScript explained in practice

Discover the real mechanism behind JavaScript closures, understanding lexical scope, first-class functions, and safe state retention in memory.

BackendEngenharia•4 min

Why gRPC and Protocol Buffers Outperform Traditional JSON APIs

Explore how Protocol Buffers binary serialization and gRPC transform microservices communication into high-performance APIs.

Backend•4 min

How to create partial indexes in PostgreSQL for queries

Learn how partial indexes in PostgreSQL help filter only relevant rows, saving disk space and speeding up heavy database requests.

IABackend•3 min

Claude down? How to fix authentication failures and app freezes

Understand Anthropic's recent authentication instability and learn how to implement robust failovers and resilience in critical systems.

BackendRedes•4 min

How to inspect HTTP traffic with curl in the terminal

Learn how to debug API headers, status codes, and response times directly from the command line using the curl utility.

Backend•4 min

Slow database? How SQL indexes prevent full table scans

Discover the essential foundation of B-Tree indexing in relational databases and learn how it accelerates queries by skipping full table scans.

BackendDevOps•4 min

How to clear npm cache and fix build failures

Learn the step-by-step process to safely clear your npm cache, resolve corrupted dependencies, and fix build failures in Node.js projects.

IABackend•5 min

How to Implement Secure LLM Function Calling with Guardrails

Learn how to protect AI tool calls by validating JSON schemas, sanitizing parameters, and preventing prompt injection attacks in enterprise environments.