Personal developer blog by Patricio Marroquin — full-stack dev from Lima, Peru. Software development insights, tutorials, and hot takes.https://patriciomarroquin.dev/https://patriciomarroquin.dev/blog/vibe-coding-productivity-myth-or-reality/https://patriciomarroquin.dev/blog/vibe-coding-productivity-myth-or-reality/A critical look at the productivity claims of AI coding assistants, what the research actually shows, and how to use these tools effectively without falling into common traps.Fri, 27 Feb 2026 00:00:00 GMTtrendingAIvibe codingproductivityClaude CodeGitHub Copilottrendingdeveloper experiencehttps://patriciomarroquin.dev/blog/astro-component-patterns-for-react-devs/https://patriciomarroquin.dev/blog/astro-component-patterns-for-react-devs/A friendly guide for React developers to adopt Astro's island architecture with practical component patterns and integrations.Tue, 24 Feb 2026 00:00:00 GMTtutorialAstroReactweb developmenttutorialcomponentshttps://patriciomarroquin.dev/blog/testing-nestjs-microservices-effectively/https://patriciomarroquin.dev/blog/testing-nestjs-microservices-effectively/A clear strategy to write maintainable unit and integration tests for NestJS microservices, covering mocks, E2E, and CI best practices.Fri, 20 Feb 2026 00:00:00 GMTdeep-diveNestJStestingmicroservicesTypeScriptDevToolshttps://patriciomarroquin.dev/blog/redis-7-features-in-2026-you-need-to-know/https://patriciomarroquin.dev/blog/redis-7-features-in-2026-you-need-to-know/A candid look at Redis 7's new modules and capabilities that go beyond the usual key-value stuff and how to use them effectively today.Tue, 17 Feb 2026 00:00:00 GMTtrendingRedisdatabasescachingtrendingperformancehttps://patriciomarroquin.dev/blog/building-agentic-ai-nodejs-tool-use/https://patriciomarroquin.dev/blog/building-agentic-ai-nodejs-tool-use/Learn how to build AI agents that can use tools, make decisions, and complete multi-step tasks autonomously using Node.js and the OpenAI/Anthropic APIs.Fri, 13 Feb 2026 00:00:00 GMTtutorialAINode.jsOpenAIAnthropicagentic AItool usetutorialhttps://patriciomarroquin.dev/blog/refactoring-a-monolith-to-nestjs-microservices/https://patriciomarroquin.dev/blog/refactoring-a-monolith-to-nestjs-microservices/Deep dive into strategies and pitfalls when breaking down large Node.js apps into clean, maintainable NestJS microservices.Tue, 10 Feb 2026 00:00:00 GMTdeep-diveNestJSNode.jsmicroservicesarchitecturerefactoringhttps://patriciomarroquin.dev/blog/serverless-python-with-aws-lambda-in-2026/https://patriciomarroquin.dev/blog/serverless-python-with-aws-lambda-in-2026/Step-by-step guide on using the latest AWS Lambda features to build fast, scalable Python APIs without managing any servers.Thu, 05 Feb 2026 00:00:00 GMTtutorialPythonAWSserverlessAPItutorialhttps://patriciomarroquin.dev/blog/building-your-first-mcp-server/https://patriciomarroquin.dev/blog/building-your-first-mcp-server/Step-by-step tutorial on creating a Model Context Protocol (MCP) server that lets Claude, ChatGPT, and other AI assistants interact with your custom tools and data sources.Tue, 03 Feb 2026 00:00:00 GMTtutorialMCPAITypeScripttutorialClaudeChatGPTAnthropichttps://patriciomarroquin.dev/blog/building-high-throughput-event-driven-apis-with-nestjs/https://patriciomarroquin.dev/blog/building-high-throughput-event-driven-apis-with-nestjs/Architect scalable event-driven APIs using NestJS and message brokers—practical tips for throughput, reliability, and ease of maintenance.Thu, 29 Jan 2026 00:00:00 GMTdeep-diveNestJSAPIevent-drivenmicroservicesarchitecturehttps://patriciomarroquin.dev/blog/deploying-astro-sites-with-serverless-functions-on-vercel/https://patriciomarroquin.dev/blog/deploying-astro-sites-with-serverless-functions-on-vercel/Learn how to combine Astro’s static site generation with dynamic serverless functions hosted on Vercel for modern apps.Tue, 27 Jan 2026 00:00:00 GMTtutorialAstroVercelserverlessdeploymentstatic-siteshttps://patriciomarroquin.dev/blog/testing-strategy-for-modern-nodejs-apps/https://patriciomarroquin.dev/blog/testing-strategy-for-modern-nodejs-apps/Explore a comprehensive testing approach that includes integration, end-to-end tests, and effective mocking in Node.js projects.Thu, 22 Jan 2026 00:00:00 GMTdeep-diveNode.jstestingjestintegration-testsTDDhttps://patriciomarroquin.dev/blog/chatgpt-4-5-devs-perspective-whats-really-changed/https://patriciomarroquin.dev/blog/chatgpt-4-5-devs-perspective-whats-really-changed/An honest appraisal of ChatGPT 4.5’s new features and how they concretely impact your day-to-day dev workflow.Tue, 20 Jan 2026 00:00:00 GMTtrendingAIChatGPTsoftware-developmentproductivityOpenAIhttps://patriciomarroquin.dev/blog/typescript-advanced-types-patterns-you-probably-dont-use/https://patriciomarroquin.dev/blog/typescript-advanced-types-patterns-you-probably-dont-use/Unlock power in TypeScript beyond basic types with real patterns that improve code safety and developer experience.Thu, 15 Jan 2026 00:00:00 GMTtutorialTypeScripttypescript-tipsprogrammingstatic-typingwebdevhttps://patriciomarroquin.dev/blog/rethinking-monoliths-vs-microservices-in-2026/https://patriciomarroquin.dev/blog/rethinking-monoliths-vs-microservices-in-2026/A no-BS look at when monoliths still shine, when microservices pay off, and how to decide your architecture in 2026’s ecosystem.Tue, 13 Jan 2026 00:00:00 GMTdeep-divearchitecturemicroservicesmonolithsystem designbestpracticeshttps://patriciomarroquin.dev/blog/building-a-scalable-redis-cache-layer-for-nodejs/https://patriciomarroquin.dev/blog/building-a-scalable-redis-cache-layer-for-nodejs/Step-by-step guide to implement a Redis caching layer in Node.js apps that actually improves performance and avoids common pitfalls.Fri, 09 Jan 2026 00:00:00 GMTtutorialNode.jsRediscachingperformancetutorialhttps://patriciomarroquin.dev/blog/claude-agents-vs-claude-skills-complete-comparison/https://patriciomarroquin.dev/blog/claude-agents-vs-claude-skills-complete-comparison/Understand the difference between Claude Code agents and skills - when to use each, how they work under the hood, and practical examples for your development workflow.Thu, 08 Jan 2026 00:00:00 GMTdeep-diveAIClaudeagentsskillsautomationdeveloper-toolshttps://patriciomarroquin.dev/blog/nextjs-16-whats-new-and-who-should-upgrade-now/https://patriciomarroquin.dev/blog/nextjs-16-whats-new-and-who-should-upgrade-now/A straightforward look at NextJS 16’s new features and what they mean for your current projects. Skip hype and decide if it’s worth your time today.Tue, 06 Jan 2026 00:00:00 GMTtrendingNextJSJavaScriptwebdevframeworksperformancehttps://patriciomarroquin.dev/blog/typescript-6-whats-new-and-should-you-adopt-it-now/https://patriciomarroquin.dev/blog/typescript-6-whats-new-and-should-you-adopt-it-now/TS 6 just dropped with features aimed at speed and utility types. I explain what’s actually useful today and when to hold off upgrading.Mon, 29 Dec 2025 00:00:00 GMTtrendingtypescriptjavascripttypescript6frontendbackendhttps://patriciomarroquin.dev/blog/debugging-nodejs-memory-leaks-step-by-step/https://patriciomarroquin.dev/blog/debugging-nodejs-memory-leaks-step-by-step/Memory leaks kill apps silently. I walk you through using tools like Chrome DevTools and heap snapshots to track down leaks in Node.js.Fri, 26 Dec 2025 00:00:00 GMTtutorialnodejsdebuggingmemory-leaksperformancetutorialhttps://patriciomarroquin.dev/blog/ai-bubble-reality-check-software-developers/https://patriciomarroquin.dev/blog/ai-bubble-reality-check-software-developers/Everyone's drinking the AI Kool-Aid, but is the hype justified? An honest look at what AI can and can't do for developers, and where the bubble might burst.Thu, 25 Dec 2025 00:00:00 GMTtrendingaisoftware-developmentindustry-trendscareerreality-checkhttps://patriciomarroquin.dev/blog/the-testing-pyramid-in-2025-does-it-still-make-sense/https://patriciomarroquin.dev/blog/the-testing-pyramid-in-2025-does-it-still-make-sense/A skeptical take on the classic testing pyramid. Should we adapt or rethink our testing strategies with modern tools like E2E puppeteer & component testing?Mon, 22 Dec 2025 00:00:00 GMTdeep-divetestingtest-strategye2eunit-testingreactnodejshttps://patriciomarroquin.dev/blog/hands-on-astro-themes-building-a-mdx-powered-blog/https://patriciomarroquin.dev/blog/hands-on-astro-themes-building-a-mdx-powered-blog/How to create a blazing-fast blog using Astro with MDX, from zero setup to deploying with themes, layouts, and custom components.Thu, 18 Dec 2025 00:00:00 GMTtutorialastromdxstatic-site-generatortutorialfrontendhttps://patriciomarroquin.dev/blog/how-ai-coding-assistants-are-changing-nodejs-devs-workflow/https://patriciomarroquin.dev/blog/how-ai-coding-assistants-are-changing-nodejs-devs-workflow/Cutting through the hype: a practical look at how AI tools like GitHub Copilot & GPT helpers improve (and sometimes frustrate) Node.js development.Mon, 15 Dec 2025 00:00:00 GMTtrendingnodejsaidevtoolsautomationproductivityhttps://patriciomarroquin.dev/blog/why-i-swear-by-strict-typing-in-large-react-projects/https://patriciomarroquin.dev/blog/why-i-swear-by-strict-typing-in-large-react-projects/An honest look at how strict TypeScript settings save tons of debugging time, improve collaboration, and boost confidence in complex React apps.Thu, 11 Dec 2025 00:00:00 GMTdeep-divetypescriptreactarchitecturebestpracticesdeveloper-experiencehttps://patriciomarroquin.dev/blog/building-a-rocket-fuel-nodejs-api-with-typescript/https://patriciomarroquin.dev/blog/building-a-rocket-fuel-nodejs-api-with-typescript/A practical guide to crafting a scalable Node.js REST API using TypeScript, best architecture, and error handling that won’t make you cry.Mon, 08 Dec 2025 00:00:00 GMTtutorialnodejstypescriptapibackendtutorialarchitecturehttps://patriciomarroquin.dev/blog/react-19-biggest-features-i-am-excited-about/https://patriciomarroquin.dev/blog/react-19-biggest-features-i-am-excited-about/A deep look at React 19’s top new features and why they matter for your daily dev work — spoiler: it’s not just hype.Sat, 06 Dec 2025 00:00:00 GMTtrendingreactjavascriptfront-endreact19webdev