Notes about everythinghttps://woliveiras.com/https://woliveiras.com/blog/hype-check-on-loop-engineering/https://woliveiras.com/blog/hype-check-on-loop-engineering/Loop engineering is the new phrase in AI coding circles. Here is what is real, what is exaggerated, and how senior engineers should think about agent loops.Sun, 14 Jun 2026 00:00:00 GMThttps://woliveiras.com/blog/introducing-geremmyas-spec-driven-development-ai-assistants/https://woliveiras.com/blog/introducing-geremmyas-spec-driven-development-ai-assistants/Geremmyas is a CLI harness for installing repeatable AI coding assistant workflows, project rules, skills, guardrails, and a dashboard for tracking specs and tasks.Thu, 04 Jun 2026 00:00:00 GMThttps://woliveiras.com/blog/what-a-senior-engineer-found-in-a-vibecoded-app/https://woliveiras.com/blog/what-a-senior-engineer-found-in-a-vibecoded-app/A Design expert built a full healthcare platform with Cursor in weeks. Impressive. Then I read the code before running a single command, and found 4 critical security vulnerabilities, broken RLS, and a rate limiter that did nothing.Fri, 08 May 2026 00:00:00 GMThttps://woliveiras.com/blog/using-sentry-mcp-to-identify-and-prioritize-high-impact-issues/https://woliveiras.com/blog/using-sentry-mcp-to-identify-and-prioritize-high-impact-issues/How I used the Sentry Model Context Protocol (MCP) integration with a data-driven scoring framework to cut Sentry noise by 90-96% and fix what actually matters first.Thu, 30 Apr 2026 00:00:00 GMThttps://woliveiras.com/blog/on-device-llm-challenges-android-development-litert-lm/https://woliveiras.com/blog/on-device-llm-challenges-android-development-litert-lm/What I've learned by integrating Gemma4 and Qwen3 models into a Kotlin wordle-like game with Jetpack Compose.Mon, 27 Apr 2026 00:00:00 GMThttps://woliveiras.com/blog/code-review-in-the-ai-era-we-need-to-change/https://woliveiras.com/blog/code-review-in-the-ai-era-we-need-to-change/AI agents are reshaping how we write code, but our engineering practices haven't caught up. A deep look at the challenges of code review, the growing gap between code produced and code understood, and why none of the current solutions feel complete yet.Wed, 25 Mar 2026 00:00:00 GMThttps://woliveiras.com/blog/open-source-licenses-and-data-sovereignty/https://woliveiras.com/blog/open-source-licenses-and-data-sovereignty/Not all open-source licenses are equal when it comes to data sovereignty. Learn which license types can create jurisdictional risks and how to evaluate them for your infrastructure.Wed, 25 Mar 2026 00:00:00 GMThttps://woliveiras.com/blog/european-alternatives-to-us-tech-a-practical-guide/https://woliveiras.com/blog/european-alternatives-to-us-tech-a-practical-guide/A curated list of European cloud providers, AI services, and digital tools that offer solid alternatives to dominant US platforms.Wed, 11 Mar 2026 00:00:00 GMThttps://woliveiras.com/blog/how-experienced-developers-actually-use-ai-agents-in-their-daily-work/https://woliveiras.com/blog/how-experienced-developers-actually-use-ai-agents-in-their-daily-work/A data-driven look at how professional developers really use AI coding agents like GitHub Copilot and Claude. Spoiler: they don't vibe code.Wed, 25 Feb 2026 00:00:00 GMThttps://woliveiras.com/blog/the-myth-of-perfect-code/https://woliveiras.com/blog/the-myth-of-perfect-code/Learn why the relentless pursuit of 'clean code' and a 'perfect architecture' can be counterproductive in real-world software development—and how focusing on practical maintainability is the key to sustainable projects.Tue, 16 Dec 2025 00:00:00 GMThttps://woliveiras.com/blog/react-interview-prep/https://woliveiras.com/blog/react-interview-prep/Practical examples of common React anti-patterns, explanations, and improved solutions to prepare for interviews.Sun, 30 Nov 2025 21:00:00 GMThttps://woliveiras.com/blog/how-to-do-effective-pair-programming/https://woliveiras.com/blog/how-to-do-effective-pair-programming/A practical guide to pairing with purpose: roles, setup, communication, and habits that make pair programming enjoyable.Sun, 30 Nov 2025 19:00:00 GMThttps://woliveiras.com/blog/when-to-fetch-on-server-vs-client/https://woliveiras.com/blog/when-to-fetch-on-server-vs-client/A practical guide to deciding where data fetching belongs: server components, SSR, SSG/ISR, or client-side hooks.Sun, 30 Nov 2025 18:00:00 GMThttps://woliveiras.com/blog/caching-considerations-and-stale-while-revalidate/https://woliveiras.com/blog/caching-considerations-and-stale-while-revalidate/How to think about caching for SSR, SSG/ISR, and client fetches, and how stale-while-revalidate keeps pages fast and fresh.Sun, 30 Nov 2025 14:00:00 GMThttps://woliveiras.com/blog/difference-between-ssr-ssg-csr-and-isr/https://woliveiras.com/blog/difference-between-ssr-ssg-csr-and-isr/A conceptual look at the rendering models behind modern web apps—what SSR, SSG, CSR, and ISR are, how they work, and the trade-offs behind each.Sun, 30 Nov 2025 12:00:00 GMThttps://woliveiras.com/blog/how-to-clone-pi-os-from-microsd-to-nvme-ssd/https://woliveiras.com/blog/how-to-clone-pi-os-from-microsd-to-nvme-ssd/A concise guide for experienced users on migrating a Raspberry Pi OS installation from a microSD card to a high-performance NVMe SSD using Klon (a modern rpi-clone-inspired tool).Sat, 29 Nov 2025 00:00:00 GMThttps://woliveiras.com/blog/building-local-llm-server-with-raspberry-pi-ollama-tailscale/https://woliveiras.com/blog/building-local-llm-server-with-raspberry-pi-ollama-tailscale/A complete and budget-friendly way to build a private, low-cost, always-available LLM server with a Raspberry Pi 5, Ollama inference engine, Tailscale for secure remote access, and Chatbox as a desktop/mobile client.Thu, 27 Nov 2025 16:30:00 GMThttps://woliveiras.com/blog/building-multi-agent-systems-architectures-coordination-protocols-orchestration/https://woliveiras.com/blog/building-multi-agent-systems-architectures-coordination-protocols-orchestration/A deep technical guide to designing, orchestrating, and scaling multi-agent systems using LLM-based agents, coordination protocols, and modern AI engineering patterns.Sun, 23 Nov 2025 14:30:00 GMThttps://woliveiras.com/blog/routing-algorithms-from-pathfinding-to-graph-neural-networks/https://woliveiras.com/blog/routing-algorithms-from-pathfinding-to-graph-neural-networks/A technical tour of modern routing systems, connecting Dijkstra and A* to Contraction Hierarchies, multimodal routing, and graph neural networks for large-scale ETA prediction in systems like Google Maps, Waze, and CityMapper.Tue, 18 Nov 2025 06:00:00 GMThttps://woliveiras.com/blog/running-llms-on-single-board-computers-raspberry-pi-orange-pi-and-radxa/https://woliveiras.com/blog/running-llms-on-single-board-computers-raspberry-pi-orange-pi-and-radxa/A comprehensive guide to running Large Language Models locally on affordable single-board computers, exploring hardware options, performance benchmarks, and practical setup for private and cost-effective AI.Sun, 16 Nov 2025 06:00:00 GMThttps://woliveiras.com/blog/implementing-factory-pattern-for-multiple-llm-providers/https://woliveiras.com/blog/implementing-factory-pattern-for-multiple-llm-providers/A deep dive into building a scalable, environment-driven architecture for integrating multiple LLM providers using the Factory pattern. Learn how to abstract provider differences, manage configurations, and build production-ready AI applications that can switch between OpenAI, Anthropic, Google Gemini, and local models without code changes.Thu, 13 Nov 2025 20:57:50 GMThttps://woliveiras.com/blog/building-personal-media-server-with-arr-stack-jellyfin/https://woliveiras.com/blog/building-personal-media-server-with-arr-stack-jellyfin/A comprehensive guide on how I built my own automated media server using Radarr, Sonarr, Prowlarr, Jellyfin, and other open-source tools to create a personal streaming platform and reduce dependency on commercial streaming services.Tue, 11 Nov 2025 15:00:00 GMThttps://woliveiras.com/blog/advantages-and-disadvantages-of-using-monorepos/https://woliveiras.com/blog/advantages-and-disadvantages-of-using-monorepos/An in-depth analysis of the advantages and disadvantages of using monorepos in software development, exploring their impact on collaboration, code sharing, dependency management, and scalability.Wed, 17 Sep 2025 20:00:00 GMThttps://woliveiras.com/blog/introduction-to-monorepos-managing-large-scale-codebases-efficiently/https://woliveiras.com/blog/introduction-to-monorepos-managing-large-scale-codebases-efficiently/An introduction to monorepos, exploring their history, benefits, and practical applications in managing large-scale codebases efficiently.Wed, 17 Sep 2025 18:00:00 GMThttps://woliveiras.com/blog/migrating-from-npm-or-yarn-to-pnpm/https://woliveiras.com/blog/migrating-from-npm-or-yarn-to-pnpm/An in-depth guide on why and how to transition from NPM or Yarn to PNPM, highlighting performance benefits, command differences, migration strategies, and compatibility considerations.Wed, 17 Sep 2025 18:00:00 GMThttps://woliveiras.com/blog/dependency-management-challenges-in-the-javascript-ecosystem/https://woliveiras.com/blog/dependency-management-challenges-in-the-javascript-ecosystem/Exploring the complexities of dependency management in JavaScript, including version conflicts, security vulnerabilities, and best practices for maintaining healthy projects.Wed, 17 Sep 2025 11:00:00 GMThttps://woliveiras.com/blog/understanding-the-naming-conventions-of-large-language-models/https://woliveiras.com/blog/understanding-the-naming-conventions-of-large-language-models/A guide to deciphering model names for better AI Engineering decisionsWed, 20 Aug 2025 16:00:00 GMThttps://woliveiras.com/blog/starting-a-frontend-monorepo-practical-tutorial-with-nx-vite-biome-js-and-react/https://woliveiras.com/blog/starting-a-frontend-monorepo-practical-tutorial-with-nx-vite-biome-js-and-react/A complete, step-by-step tutorial on how to build a production-ready frontend monorepo. Learn how to set up a scalable architecture using PNPM, Nx, Vite, Vitest, React, TypeScript, Emotion, and Biome.js for a streamlined and efficient development workflow.Sat, 16 Aug 2025 13:00:00 GMThttps://woliveiras.com/blog/beginners-guide-to-controlling-llm-behavior-inference-parameters/https://woliveiras.com/blog/beginners-guide-to-controlling-llm-behavior-inference-parameters/Learn how to effectively control the behavior of Large Language Models (LLMs) using inference parameters like temperature, top-p, and more. This guide provides practical examples with Python and LangChain.Sun, 10 Aug 2025 10:00:00 GMThttps://woliveiras.com/blog/the-agentic-prompt-blueprint-for-high-performance-llm-instructions/https://woliveiras.com/blog/the-agentic-prompt-blueprint-for-high-performance-llm-instructions/Learn how to create precise, structured prompts for AI agents using the CO-STAR framework, enhancing reliability and performance in LLM applications.Sat, 09 Aug 2025 10:00:00 GMThttps://woliveiras.com/blog/the-stateact-pattern-for-robust-and-long-running-agents/https://woliveiras.com/blog/the-stateact-pattern-for-robust-and-long-running-agents/Exploring the StateAct pattern to enhance AI agents' robustness and long-term task management. Learn how to implement this pattern using LangGraph and Ollama, ensuring agents maintain focus and clarity in complex tasks.Mon, 04 Aug 2025 16:00:00 GMThttps://woliveiras.com/blog/beyond-solo-agents-the-power-of-collaborative-ai-teams-using-crewai/https://woliveiras.com/blog/beyond-solo-agents-the-power-of-collaborative-ai-teams-using-crewai/From solo problem-solvers to orchestrated teams. This guide explores the 'why' and 'how' of multi-agent architectures, demonstrating how a team of specialized AI agents can solve complex problems more effectively than a single agent ever could.Wed, 30 Jul 2025 16:00:00 GMThttps://woliveiras.com/blog/exploring-tree-of-thoughts-tot-and-language-agent-tree-search-lats/https://woliveiras.com/blog/exploring-tree-of-thoughts-tot-and-language-agent-tree-search-lats/A deep dive into advanced agentic frameworks like Tree of Thoughts (ToT) and Language Agent Tree Search (LATS) that enable AI agents to plan, explore, and self-correct.Wed, 30 Jul 2025 10:00:00 GMThttps://woliveiras.com/blog/introduction-to-the-reflexion-framework/https://woliveiras.com/blog/introduction-to-the-reflexion-framework/Go beyond basic agents. Discover how the Reflexion framework equips your AI agents with memory and the capacity to learn from their mistakes, enhancing their robustness and intelligence.Tue, 29 Jul 2025 16:00:00 GMThttps://woliveiras.com/blog/understanding-the-react-framework-for-ai-agents/https://woliveiras.com/blog/understanding-the-react-framework-for-ai-agents/An in-depth exploration of the ReAct framework, its components, and how it empowers AI agents to reason and act effectively.Mon, 28 Jul 2025 15:00:00 GMThttps://woliveiras.com/blog/how-connect-an-ai-agent-to-sql-database/https://woliveiras.com/blog/how-connect-an-ai-agent-to-sql-database/A comprehensive guide on enabling your AI agent to access a SQL database for real-time information retrieval.Sun, 27 Jul 2025 10:00:00 GMThttps://woliveiras.com/blog/how-connect-local-ai-agent-to-the-internet/https://woliveiras.com/blog/how-connect-local-ai-agent-to-the-internet/A comprehensive guide on enabling your local AI agent to access the internet for real-time information retrieval.Sat, 26 Jul 2025 20:00:00 GMThttps://woliveiras.com/blog/how-to-crack-pwnagotchi-captured-handshakes/https://woliveiras.com/blog/how-to-crack-pwnagotchi-captured-handshakes/A guide to cracking handshakes captured by PwnagotchiWed, 23 Jul 2025 16:00:00 GMThttps://woliveiras.com/blog/how-to-backup-pwnagotchi/https://woliveiras.com/blog/how-to-backup-pwnagotchi/A guide to the ways to backup Pwnagotchi settings and pluginsTue, 22 Jul 2025 16:00:00 GMThttps://woliveiras.com/blog/how-to-check-pwnagotchi-is-working/https://woliveiras.com/blog/how-to-check-pwnagotchi-is-working/A guide to the ways to check if Pwnagotchi is workingTue, 22 Jul 2025 16:00:00 GMThttps://woliveiras.com/blog/how-to-restart-pwnagotchi/https://woliveiras.com/blog/how-to-restart-pwnagotchi/A guide to the ways to restart PwnagotchiTue, 22 Jul 2025 16:00:00 GMThttps://woliveiras.com/blog/how-to-chat-with-github-repository-a-guide-to-local-rag-with-ollama-and-langchain/https://woliveiras.com/blog/how-to-chat-with-github-repository-a-guide-to-local-rag-with-ollama-and-langchain/Creating an AI Agent to read your GitHub repository using Ollama and LangChain to answer questions about its code structure, documentation, and more.Sun, 20 Jul 2025 15:00:00 GMThttps://woliveiras.com/blog/embracing-the-learning-journey-a-guide-for-new-software-engineers/https://woliveiras.com/blog/embracing-the-learning-journey-a-guide-for-new-software-engineers/A comprehensive guide for new software engineers to navigate their learning journey and embrace continuous growth.Sat, 19 Jul 2025 10:00:00 GMThttps://woliveiras.com/blog/what-to-do-after-installing-pwnagotchi/https://woliveiras.com/blog/what-to-do-after-installing-pwnagotchi/A guide to configure Pwnagotchi after installationFri, 18 Jul 2025 16:00:00 GMThttps://woliveiras.com/blog/building-ai-agent-pdf-question-answering-langchain-ollama/https://woliveiras.com/blog/building-ai-agent-pdf-question-answering-langchain-ollama/Learn how to build an AI agent that can answer questions from PDF documents using LangChain and Ollama. Step-by-step guide with code examples.Thu, 03 Jul 2025 16:00:00 GMThttps://woliveiras.com/blog/distinguishing-generative-ai-from-agentic-ai/https://woliveiras.com/blog/distinguishing-generative-ai-from-agentic-ai/This article explores the key differences between generative AI and agentic AI, providing insights into their unique characteristics and applications.Mon, 30 Jun 2025 16:00:00 GMThttps://woliveiras.com/blog/deconstructing-ai-agents-a-practical-guide-for-understanding-it/https://woliveiras.com/blog/deconstructing-ai-agents-a-practical-guide-for-understanding-it/Explore the anatomy of AI Agents, their execution flow, and the architecture needed to run them effectively. This guide provides a practical understanding of AI Agents beyond the hype.Sat, 28 Jun 2025 16:00:00 GMThttps://woliveiras.com/blog/what-is-a-dag-understanding-the-engine-behind-modern-data-and-ai/https://woliveiras.com/blog/what-is-a-dag-understanding-the-engine-behind-modern-data-and-ai/Exploring the concept of Directed Acyclic Graphs (DAGs) and their significance in data engineering and AI applications. Learn how DAGs help manage complex workflows efficiently.Fri, 27 Jun 2025 14:00:00 GMThttps://woliveiras.com/blog/langchain-vs-langgraph-from-simple-chains-to-complex-ai-agents/https://woliveiras.com/blog/langchain-vs-langgraph-from-simple-chains-to-complex-ai-agents/Explore the differences between LangChain and LangGraph, two powerful frameworks for building AI applications. Learn when to use each and see code examples in action.Fri, 27 Jun 2025 08:00:00 GMThttps://woliveiras.com/blog/run-copilot-style-assistant-locally-llm-vs-code/https://woliveiras.com/blog/run-copilot-style-assistant-locally-llm-vs-code/Learn how to set up a Copilot-style AI assistant in Visual Studio Code using local LLMs. This guide covers the necessary tools, configurations, and tips for effective coding assistance.Sun, 15 Jun 2025 00:00:00 GMThttps://woliveiras.com/blog/how-to-use-llm-for-free-lm-studio-guide/https://woliveiras.com/blog/how-to-use-llm-for-free-lm-studio-guide/Learn how to leverage LM Studio for free local LLM use, ensuring privacy and customization.Mon, 09 Jun 2025 00:00:00 GMThttps://woliveiras.com/blog/understanding-rag-llm/https://woliveiras.com/blog/understanding-rag-llm/Discover what Retrieval-Augmented Generation (RAG) is and how it improves Large Language Model (LLM) responses by connecting them to external knowledge, reducing hallucinations and providing up-to-date information.Sat, 31 May 2025 00:00:00 GMThttps://woliveiras.com/blog/how-to-schedule-workflows-github-actions/https://woliveiras.com/blog/how-to-schedule-workflows-github-actions/Scheduling workflows in GitHub Actions is easy with the `schedule` event and cron expressions. Learn how to set up scheduled jobs.Fri, 28 Mar 2025 00:00:00 GMThttps://woliveiras.com/blog/how-to-cache-npm-modules-speed-up-github-actions/https://woliveiras.com/blog/how-to-cache-npm-modules-speed-up-github-actions/Learn how to cache NPM modules in GitHub Actions to reduce build times and improve CI efficiency. Optimize your workflow with simple and effective steps.Wed, 26 Mar 2025 00:00:00 GMThttps://woliveiras.com/blog/how-to-run-linters-github-actions-pull-requests/https://woliveiras.com/blog/how-to-run-linters-github-actions-pull-requests/Ensure code quality with linters in GitHub Actions for pull requests. Automating linting on opened, reopened, or synchronized PRs.Tue, 25 Mar 2025 00:00:00 GMThttps://woliveiras.com/blog/how-to-secure-project-github-actions-dependency-vulnerability-scanning/https://woliveiras.com/blog/how-to-secure-project-github-actions-dependency-vulnerability-scanning/Securing our software by automating dependency vulnerability scanning with GitHub Actions.Mon, 24 Mar 2025 00:00:00 GMThttps://woliveiras.com/blog/how-to-schedule-dependabot-to-keep-dependencies-updated/https://woliveiras.com/blog/how-to-schedule-dependabot-to-keep-dependencies-updated/Scheduling Dependabot checks to keep GitHub Actions, NPM and Docker updatedSun, 23 Mar 2025 00:00:00 GMThttps://woliveiras.com/blog/new-blog-with-github-actions-github-pages-and-astro/https://woliveiras.com/blog/new-blog-with-github-actions-github-pages-and-astro/I got surprised by how easy it was to create a new blog with Astro, GitHub Pages, GitHub Actions, and GitHub CodespacesSat, 22 Mar 2025 00:00:00 GMT