https://lqtrung.dev/blog Front-End Development and Algorithmic Insights en-us, vn address@yoursite.com (Trung Le) address@yoursite.com (Trung Le) Fri, 15 May 2026 00:00:00 GMT https://lqtrung.dev/blog/ai-agents-architecture-deep-dive https://lqtrung.dev/blog/ai-agents-architecture-deep-dive From chatbots to autonomous systems—how AI agents work under the hood, which patterns scale in production, and how to build them without losing control of your stack. Fri, 15 May 2026 00:00:00 GMT address@yoursite.com (Trung Le) AIAgentsArchitectureMCPLLMEngineering https://lqtrung.dev/blog/sustainable-pace-high-performance-engineering https://lqtrung.dev/blog/sustainable-pace-high-performance-engineering April is a good time to reset before burnout season. Evidence-based habits for engineers who want a long career without sacrificing quality. Fri, 10 Apr 2026 00:00:00 GMT address@yoursite.com (Trung Le) CareerSelf-ImprovementHealthEngineering https://lqtrung.dev/blog/web-platform-updates-frontend-devs-2026 https://lqtrung.dev/blog/web-platform-updates-frontend-devs-2026 A spring 2026 roundup: container queries in production, view transitions, improved observability APIs, and what to adopt vs. wait on. Sun, 15 Mar 2026 00:00:00 GMT address@yoursite.com (Trung Le) FrontendWeb PlatformCSSJavaScriptPerformance https://lqtrung.dev/blog/personal-knowledge-system-for-developers https://lqtrung.dev/blog/personal-knowledge-system-for-developers Notion graveyards help nobody. A lightweight PKM for engineers: capture, link, and retrieve what matters from incidents, books, and code. Fri, 20 Feb 2026 00:00:00 GMT address@yoursite.com (Trung Le) Self-ImprovementProductivityLearningCareer https://lqtrung.dev/blog/small-language-models-for-everyday-coding https://lqtrung.dev/blog/small-language-models-for-everyday-coding Frontier models are not always the right tool. When smaller, faster models win for autocomplete, privacy, and cost—and how to evaluate them. Mon, 12 Jan 2026 00:00:00 GMT address@yoursite.com (Trung Le) AIEngineeringProductivityLocal AI https://lqtrung.dev/blog/year-end-engineer-skill-audit-2025 https://lqtrung.dev/blog/year-end-engineer-skill-audit-2025 Before setting 2026 goals, run an honest skill audit across technical depth, delivery, communication, and leverage—not just LeetCode scores. Thu, 18 Dec 2025 00:00:00 GMT address@yoursite.com (Trung Le) CareerSelf-ImprovementEngineeringReflection https://lqtrung.dev/blog/writing-technical-docs-with-ai-assistants https://lqtrung.dev/blog/writing-technical-docs-with-ai-assistants AI can draft docs fast—but only engineers can make them true. A workflow for accurate runbooks, ADRs, and onboarding guides. Fri, 28 Nov 2025 00:00:00 GMT address@yoursite.com (Trung Le) AIDocumentationCommunicationEngineering https://lqtrung.dev/blog/react-server-components-practical-lessons https://lqtrung.dev/blog/react-server-components-practical-lessons RSC is powerful when the mental model clicks. Lessons from production apps on boundaries, caching, and what still belongs on the client. Wed, 05 Nov 2025 00:00:00 GMT address@yoursite.com (Trung Le) ReactNext.jsFrontendArchitecture https://lqtrung.dev/blog/mcp-and-tool-using-agents-for-developers https://lqtrung.dev/blog/mcp-and-tool-using-agents-for-developers Model Context Protocol is turning IDEs into orchestration layers. Here is how MCP works and how to use it without leaking secrets or trust. Tue, 14 Oct 2025 00:00:00 GMT address@yoursite.com (Trung Le) AIMCPDeveloper ToolsArchitecture https://lqtrung.dev/blog/deliberate-practice-for-software-engineers https://lqtrung.dev/blog/deliberate-practice-for-software-engineers Hours at the keyboard are not the same as growth. A practical framework for engineers who want to level up on purpose. Thu, 25 Sep 2025 00:00:00 GMT address@yoursite.com (Trung Le) CareerLearningSelf-ImprovementEngineering https://lqtrung.dev/blog/ai-pair-programming-beyond-the-hype https://lqtrung.dev/blog/ai-pair-programming-beyond-the-hype How to integrate AI coding assistants into a real workflow without outsourcing judgment—or shipping faster bugs. Sat, 06 Sep 2025 00:00:00 GMT address@yoursite.com (Trung Le) AIProductivityEngineeringCareer https://lqtrung.dev/blog/understanding-wechat-miniprogram-architecture https://lqtrung.dev/blog/understanding-wechat-miniprogram-architecture Explore the fascinating world of WeChat Mini Programs - the revolutionary app-within-app platform that transformed mobile development in China. Learn about architecture, development patterns, and technical implementation. Tue, 05 Aug 2025 00:00:00 GMT address@yoursite.com (Trung Le) MobileWeChatMini ProgramArchitectureFrontendChina Tech https://lqtrung.dev/blog/mastering-javascript-proxy-comprehensive-guide https://lqtrung.dev/blog/mastering-javascript-proxy-comprehensive-guide Dive deep into JavaScript Proxy - the powerful metaprogramming feature that lets you intercept and customize operations on objects. Learn handlers, traps, and real-world applications. Wed, 30 Jul 2025 00:00:00 GMT address@yoursite.com (Trung Le) Front-EndJavaScriptAdvancedKnowledge https://lqtrung.dev/blog/frontend-live-coding-interview-guide https://lqtrung.dev/blog/frontend-live-coding-interview-guide Master frontend live coding interviews with practical React component exercises. Learn data fetching, infinite scroll, form handling, and optimization techniques with step-by-step implementations. Sun, 20 Jul 2025 00:00:00 GMT address@yoursite.com (Trung Le) FrontendInterviewReactJavaScriptLive CodingPractical https://lqtrung.dev/blog/senior-frontend-engineer-interview-guide https://lqtrung.dev/blog/senior-frontend-engineer-interview-guide Master your senior frontend engineer interview with this comprehensive guide covering system design, performance optimization, testing strategies, and modern best practices. Includes real-world examples and proven techniques. Tue, 15 Jul 2025 00:00:00 GMT address@yoursite.com (Trung Le) FrontendInterviewReactJavaScriptSystem DesignArchitecture https://lqtrung.dev/blog/web-performance-optimization-complete-guide https://lqtrung.dev/blog/web-performance-optimization-complete-guide Master web performance optimization with proven techniques for faster loading, better Core Web Vitals, and superior user experience. Covers general web apps and React-specific optimizations. Sat, 05 Jul 2025 00:00:00 GMT address@yoursite.com (Trung Le) PerformanceWeb VitalsReactOptimizationFrontend https://lqtrung.dev/blog/comprehensive-frontend-unit-testing-guide https://lqtrung.dev/blog/comprehensive-frontend-unit-testing-guide Master frontend unit testing with Jest, React Testing Library, and API mocking. Learn testing strategies, best practices, and real-world examples for bulletproof applications. Mon, 30 Jun 2025 00:00:00 GMT address@yoursite.com (Trung Le) FrontendTestingJavaScriptReactAPIJest https://lqtrung.dev/blog/backend-for-frontend-bff-architecture-deep-dive https://lqtrung.dev/blog/backend-for-frontend-bff-architecture-deep-dive Master the Backend for Frontend (BFF) pattern to build scalable, client-specific APIs. Learn implementation strategies, real-world examples, and best practices. Wed, 25 Jun 2025 00:00:00 GMT address@yoursite.com (Trung Le) ArchitectureBackendAPIMicroservicesFull-Stack https://lqtrung.dev/blog/comprehensive-frontend-monitoring-guide-sentry https://lqtrung.dev/blog/comprehensive-frontend-monitoring-guide-sentry Master frontend monitoring with Sentry, performance tracking, and error management. Learn to build bulletproof user experiences with comprehensive observability. Fri, 20 Jun 2025 00:00:00 GMT address@yoursite.com (Trung Le) FrontendMonitoringPerformanceDevOpsSentry https://lqtrung.dev/blog/mastering-frontend-system-design-radio-framework https://lqtrung.dev/blog/mastering-frontend-system-design-radio-framework Master frontend system design interviews with the proven RADIO framework. Learn how to structure your approach and tackle complex design problems with confidence. Sun, 15 Jun 2025 00:00:00 GMT address@yoursite.com (Trung Le) FrontendSystem DesignArchitectureInterviewFramework https://lqtrung.dev/blog/comprehensive-file-upload-guide-frontend https://lqtrung.dev/blog/comprehensive-file-upload-guide-frontend Master file upload implementation in frontend applications with practical examples, security considerations, and performance optimization techniques. Tue, 20 May 2025 00:00:00 GMT address@yoursite.com (Trung Le) frontendfile-uploadjavascriptreactvueperformance https://lqtrung.dev/blog/mastering-formdata-in-frontend-development https://lqtrung.dev/blog/mastering-formdata-in-frontend-development A comprehensive guide to using FormData API in frontend development, covering file uploads, form handling, and advanced techniques for modern web applications. Tue, 15 Apr 2025 00:00:00 GMT address@yoursite.com (Trung Le) frontendjavascriptformsweb-apifile-upload https://lqtrung.dev/blog/essential-product-metrics-for-growth https://lqtrung.dev/blog/essential-product-metrics-for-growth A deep dive into essential product metrics including penetration rate, conversion rate, retention rate, and other key performance indicators that drive successful product growth. Sat, 15 Feb 2025 00:00:00 GMT address@yoursite.com (Trung Le) product-managementmetricsanalyticsgrowthbusiness https://lqtrung.dev/blog/containerization-and-orchestration https://lqtrung.dev/blog/containerization-and-orchestration Master containerization with Docker and orchestration with Kubernetes for deploying scalable full-stack applications 🐳 Fri, 25 Oct 2024 00:00:00 GMT address@yoursite.com (Trung Le) DockerKubernetesDevOpsFull-Stack https://lqtrung.dev/blog/serverless-architecture-patterns https://lqtrung.dev/blog/serverless-architecture-patterns Explore serverless architecture patterns, best practices, and implementation strategies for building scalable cloud-native applications ☁️ Wed, 18 Sep 2024 00:00:00 GMT address@yoursite.com (Trung Le) ServerlessAWSFull-StackArchitecture https://lqtrung.dev/blog/modern-database-design-patterns https://lqtrung.dev/blog/modern-database-design-patterns Explore modern database design patterns, optimization techniques, and best practices for scalable full-stack applications 🗄️ Thu, 22 Aug 2024 00:00:00 GMT address@yoursite.com (Trung Le) DatabaseFull-StackArchitectureBackend https://lqtrung.dev/blog/building-scalable-nodejs-apis https://lqtrung.dev/blog/building-scalable-nodejs-apis Learn how to build scalable, maintainable Node.js APIs with proper architecture, error handling, and performance optimization 🚀 Mon, 15 Jul 2024 00:00:00 GMT address@yoursite.com (Trung Le) Node.jsAPIBackendFull-Stack https://lqtrung.dev/blog/micro-frontend-architecture-patterns https://lqtrung.dev/blog/micro-frontend-architecture-patterns Explore micro-frontend architecture patterns for building scalable, maintainable web applications at enterprise scale 🏗️ Thu, 20 Jun 2024 00:00:00 GMT address@yoursite.com (Trung Le) Micro-FrontendArchitectureFront-EndJavaScript https://lqtrung.dev/blog/modern-css-architecture-and-design-systems https://lqtrung.dev/blog/modern-css-architecture-and-design-systems Build scalable, maintainable CSS architectures and design systems using modern methodologies and tools 🎨 Wed, 08 May 2024 00:00:00 GMT address@yoursite.com (Trung Le) CSSDesign SystemsFront-EndArchitecture https://lqtrung.dev/blog/advanced-react-patterns-and-performance-optimization https://lqtrung.dev/blog/advanced-react-patterns-and-performance-optimization Master advanced React patterns and performance optimization techniques to build scalable, high-performance applications 🚀 Fri, 12 Apr 2024 00:00:00 GMT address@yoursite.com (Trung Le) ReactFront-EndPerformanceJavaScript https://lqtrung.dev/blog/algorithm-4-binary-search https://lqtrung.dev/blog/algorithm-4-binary-search Mastering Binary Search - Efficient Search in Sorted Arrays Fri, 15 Mar 2024 00:00:00 GMT address@yoursite.com (Trung Le) AlgorithmLeetcodeStudyTogether https://lqtrung.dev/blog/comprehensive-guide-to-advanced-testing-with-jest https://lqtrung.dev/blog/comprehensive-guide-to-advanced-testing-with-jest A comprehensive guide to advanced testing React projects with Jest 👌 Wed, 03 Jan 2024 00:00:00 GMT address@yoursite.com (Trung Le) Front-EndKnowledgeJavaScript https://lqtrung.dev/blog/unleasing-the-power-of-web-assembly https://lqtrung.dev/blog/unleasing-the-power-of-web-assembly WebAssembly is a new technology that has the potential to change the way we build web applications. It allows us to run code written in different languages on the web at near native speed, which opens up a lot of possibilities. In this article, we will explore some practical use cases for WebAssembly and how it can be used to create a seamless web experience. ⚡️ Mon, 25 Dec 2023 00:00:00 GMT address@yoursite.com (Trung Le) Front-EndKnowledgeJavaScript https://lqtrung.dev/blog/the-power-of-regex-unleashed https://lqtrung.dev/blog/the-power-of-regex-unleashed Regular expressions, also known as regex, are powerful tools for pattern matching and text manipulation. 🎯 Sat, 02 Dec 2023 00:00:00 GMT address@yoursite.com (Trung Le) KnowledgeGuideStudyTogether https://lqtrung.dev/blog/front-end-interview-prep-must-know-questions-p1 https://lqtrung.dev/blog/front-end-interview-prep-must-know-questions-p1 This article provides essential guidance for individuals preparing for front-end developer interviews, including a list of must-know questions and answers. ✅ Wed, 15 Nov 2023 00:00:00 GMT address@yoursite.com (Trung Le) Front-EndKnowledgeJavaScript https://lqtrung.dev/blog/unveiling-the-power-of-set-and-map-in-js https://lqtrung.dev/blog/unveiling-the-power-of-set-and-map-in-js JavaScript's Map: Versatile key-value pairs. Set: Distinct, ordered collections. Enhance data structures in seconds! 🗺️🔄🚀 Sun, 15 Oct 2023 00:00:00 GMT address@yoursite.com (Trung Le) Front-EndKnowledgeJavaScript https://lqtrung.dev/blog/understanding-plain-objects-in-js https://lqtrung.dev/blog/understanding-plain-objects-in-js Distinguish plain objects from complex ones for robust data validation in web forms. Explore the importance and practical use cases. Fri, 22 Sep 2023 00:00:00 GMT address@yoursite.com (Trung Le) Front-EndKnowledgeJavaScript https://lqtrung.dev/blog/exploring-promise-error-handling-in-js https://lqtrung.dev/blog/exploring-promise-error-handling-in-js Let's unravel the distinctions between two common promise error handling patterns: `promise.then().catch` and `promise.then(resolve, reject)`. Fri, 15 Sep 2023 00:00:00 GMT address@yoursite.com (Trung Le) Front-EndKnowledgeJavaScript https://lqtrung.dev/blog/difference-between-2-ways-of-creating-objects https://lqtrung.dev/blog/difference-between-2-ways-of-creating-objects In JavaScript, when we want to make an object, there are different ways to do it. 🧐 Fri, 08 Sep 2023 00:00:00 GMT address@yoursite.com (Trung Le) Front-EndKnowledgeJavaScript https://lqtrung.dev/blog/unravelling-the-web-journey https://lqtrung.dev/blog/unravelling-the-web-journey Dive into the URL journey - parsing, DNS, server magic—unveiling the web's behind-the-scenes marvels! Fri, 01 Sep 2023 00:00:00 GMT address@yoursite.com (Trung Le) Front-EndKnowledge https://lqtrung.dev/blog/understand-the-curry-function-in-js https://lqtrung.dev/blog/understand-the-curry-function-in-js A quick guide to understanding the curry function in JavaScript. Sun, 20 Aug 2023 00:00:00 GMT address@yoursite.com (Trung Le) JavaScriptFront-End https://lqtrung.dev/blog/a-comprehensive-front-end-code-review-checklist https://lqtrung.dev/blog/a-comprehensive-front-end-code-review-checklist A checklist of code review specifically for Front-End. Tue, 15 Aug 2023 00:00:00 GMT address@yoursite.com (Trung Le) Front-EndExperienceCode-Review https://lqtrung.dev/blog/algorithm-3-stack-queue https://lqtrung.dev/blog/algorithm-3-stack-queue Mastering Stack and Queue - A Comprehensive Guide Tue, 15 Aug 2023 00:00:00 GMT address@yoursite.com (Trung Le) AlgorithmLeetcodeStudyTogether https://lqtrung.dev/blog/algorithm-2-two-pointers https://lqtrung.dev/blog/algorithm-2-two-pointers Solving Two Pointers problems - A Quick Guide Sat, 29 Jul 2023 00:00:00 GMT address@yoursite.com (Trung Le) AlgorithmLeetcodeStudyTogether https://lqtrung.dev/blog/algorithm-1-arrays-hashing https://lqtrung.dev/blog/algorithm-1-arrays-hashing This post serves as an introductory guide to algorithmic problems centered around Arrays & Hashing Fri, 21 Jul 2023 00:00:00 GMT address@yoursite.com (Trung Le) AlgorithmLeetcodeStudyTogether https://lqtrung.dev/blog/embarking-on-an-algorithm-journey https://lqtrung.dev/blog/embarking-on-an-algorithm-journey Follow my LeetCode problems journey, learn the approach, roadmap, and tackle priority topics for beginners. Let's study together! Wed, 19 Jul 2023 00:00:00 GMT address@yoursite.com (Trung Le) AlgorithmLeetcodeStudyTogether https://lqtrung.dev/blog/deriving-ols-estimator https://lqtrung.dev/blog/deriving-ols-estimator How to derive the OLS Estimator with matrix notation and a tour of math typesetting using markdown with the help of KaTeX. Mon, 21 Dec 2020 00:00:00 GMT address@yoursite.com (Trung Le) next jsmathols https://lqtrung.dev/blog/guide-to-using-images-in-nextjs https://lqtrung.dev/blog/guide-to-using-images-in-nextjs In this article we introduce adding images in the tailwind starter blog and the benefits and limitations of the next/image component. Wed, 11 Nov 2020 00:00:00 GMT address@yoursite.com (Trung Le) next jsguide https://lqtrung.dev/blog/github-markdown-guide https://lqtrung.dev/blog/github-markdown-guide Markdown cheatsheet for all your blogging needs - headers, lists, images, tables and more! An illustrated guide based on GitHub Flavored Markdown. Fri, 11 Oct 2019 00:00:00 GMT address@yoursite.com (Trung Le) githubguide https://lqtrung.dev/blog/code-sample https://lqtrung.dev/blog/code-sample Example of a markdown file with code blocks and syntax highlighting Tue, 08 Mar 2016 00:00:00 GMT address@yoursite.com (Trung Le) markdowncodefeatures