This article explains how AsyncLocalStorage works in Node.js, demonstrates its usage with eggjs, presents benchmark results comparing tegg v3 to earlier versions, analyzes performance bottlenecks, and shows code transformations that reduce memory and CPU overhead for large-scale applications.
This article explains URL query string fundamentals, covering structure, percent-encoding, space handling, and compares JavaScript libraries qs, query-string, and URLSearchParams for parsing and stringifying query data in web and Node.js projects today.
This article explains how to overcome OpenAI's token limits by splitting massive insurance documents into manageable chunks, vectorizing them with embeddings, using a custom "broccoli" algorithm for intelligent segmentation, and compressing text with dictionary mapping and tokenization techniques to enable accurate question‑answering via the API.
This article explains the fundamentals of network protocols, the OSI seven‑layer model, TCP three‑handshake and four‑teardown processes, differences between TCP and UDP, socket long‑connections, custom protocol design, and how to implement a reusable socket connection pool in Node.js.
This tutorial shows how to quickly create a ChatGPT‑enabled web application using the open‑source Laf cloud platform, covering API key setup, serverless cloud functions, frontend SDK integration, context tracking, and one‑click deployment to a live site.
This article introduces the JD Mini Program CI tool, explains its architecture, provides step‑by‑step instructions for installing dependencies, configuring secrets, using script and command‑line interfaces for upload and preview, and demonstrates how to integrate the tool into CI/CD pipelines for automated deployment.
This article walks through a complete TCP connection example in Node.js, detailing server and client code, the three-layer Node.js architecture (JS, C++, C), the initialization process, Libuv’s event‑loop phases, task scheduling, I/O models, and how Node.js maintains non‑blocking, concurrent connections.
The article announces the GPT‑3.5 Turbo API, highlights its ten‑fold lower price of $0.002 per 1k tokens, explains the new chat‑completion format with messages, and provides a practical Node.js example along with various application ideas.
This article documents the complete process of researching, analyzing, and developing a custom React CLI scaffolding tool, including a detailed examination of Vue CLI's architecture, plugin mechanism, and codebase, as well as the implementation of interactive command‑line features, configuration options, and publishing steps.
This article walks through why a custom front‑end scaffolding tool is needed, analyzes Vue CLI’s architecture, explains how to locate global commands, examines required dependencies, and provides a step‑by‑step implementation—including project initialization, command design, create‑command logic, Node version checks, template features, CDN upload, commit linting, and a custom ESLint plugin—so readers can create a reusable CLI tailored to their business needs.
This guide shows how to set up Zipkin with Docker‑Compose, configure Elasticsearch storage, and integrate the zipkin and zipkin‑transport‑http npm packages into a Node.js app—using either ExplicitContext or the simpler Zone‑Context—to collect, send, store, and visualize OpenTracing‑compatible distributed traces.
This article explains how Node.js uses the NODE_CHANNEL_FD environment variable to establish a socketpair for IPC between a parent process and its child, detailing the spawn implementation, underlying libuv handling, and how a Go subprocess can read and write through the shared file descriptor.
The pnpm 7.23 update introduces a workspace‑root peer‑resolution option, adds command‑line help entries for the -resum-from and -include-workspace-root flags, and continues to emphasize pnpm’s disk‑space‑saving content‑addressable store for Node.js projects.
This article introduces DeepKit, a TypeScript library that preserves type information at runtime, enabling powerful data validation, serialization, and reflection capabilities for both front‑end and back‑end JavaScript applications.
An engineer building the ZenStack toolkit for Next.js and TypeScript needed a runtime check for Node.js and Prisma, turned to ChatGPT for a quick solution, discovered unintended side effects with async-exit-hook, and ultimately refined the approach using child processes and npm tricks to achieve a clean, reliable setup.
This guide walks developers through installing a Baota panel, configuring Nginx, creating a dedicated git user with bare repositories and post‑receive hooks, initializing and generating a Hexo blog locally, pushing it via the hexo‑deployer‑git, setting up an image host and Nginx reverse proxy, and backing up the project for quick deployment on a lightweight Lighthouse server.
Node.js is a server‑side JavaScript runtime built on V8 that replaces the browser environment with native libraries, uses libuv’s event loop and thread pool to provide non‑blocking asynchronous I/O, and organizes its architecture into application code, V8, bindings, and libuv layers for efficient backend development.
This guide explains how to create a bridge API that enables login and message interaction with WeChat by reverse‑engineering client and server protocols, covering UUID acquisition, QR code handling, login status polling, cookie management, and data initialization using Node.js, TypeScript, and Axios.
This newsletter presents a collection of technical articles covering the Vite 4 release, the dangers of over‑design, building Node.js automation workflows, React Native monorepo practices, Chrome's memory and energy saver modes, first‑principles thinking for engineers, WebRTC face‑recognition implementation, JavaScript best practices, and an overview of Web Workers.
This article explains why JavaScript, despite being single‑threaded, needs asynchronous mechanisms such as the event loop, details macro‑ and micro‑tasks, compares browser and Node.js implementations, and demonstrates common pitfalls and best practices using callbacks, Promise, generator, and async/await patterns.
This article details the overall backend architecture, module relationships, RESTful API design, database schemas, authentication flow, activity creation process, JSON schema validation, component platform APIs, and server‑side rendering considerations for a Node.js‑based service supporting editors, components, and end‑user pages.
This article details the background, design choices, and architectural evolution of a distributed scheduling system—from a simple Redlock‑based implementation for real‑time alerts to a robust Bull‑powered task queue supporting complex scenarios, load balancing, persistence, and reliable execution across multiple Node.js servers.
This article details the motivation, benefits, and technical design of the Document Parsing 2.0 SDK for the internationalization translation platform, describing a three‑layer architecture, the use of Adapter, Decorator, and Proxy patterns, TypeScript implementations, and a high‑performance batch update mechanism.
This article details the motivation, benefits, and technical implementation of refactoring the document parsing SDK from a monolithic design to a three‑layer architecture using Adapter, Decorator, and Proxy patterns, reducing code size by over 70% and improving extensibility for multiple document formats.
The article presents a comprehensive case study of Ctrip's 2022 PC homepage redesign, detailing the motivations, requirement analysis, island‑style architecture, cross‑team component development, server‑side rendering, public component challenges, and the dynamic data‑configuration platform that together enable fast, maintainable, and scalable web delivery.
This article details how Qunar improved its Serverless FAAS platform by introducing Node.js worker_threads for parallel computation, designing a thread‑pool with shared buffers and postMessage communication, and implementing comprehensive cache pre‑heating and governance, resulting in a 72% reduction in P99 latency and more stable service performance.
Node.js v19.1.0 introduces function mocking in the test runner, recursive file‑system watching support, updated ICU, documentation collaborator additions, removal of experimental fetch warnings, MIME utilities, and performance improvements for text decoding, providing a comprehensive set of backend enhancements.
This article explains how to implement an efficient routing system for Node.js web frameworks using a Trie (prefix tree) data structure, covering static, dynamic, and regex route matching, code examples, performance considerations, and practical tips for optimizing route lookup.
This article explains the fundamentals of JavaScript's event loop, covering browser asynchronous execution, macro‑ and micro‑tasks, timer inaccuracies, view rendering, and the differences in Node.js implementation, while providing code examples to illustrate execution order and practical implications for developers.
This article reviews four widely used authentication mechanisms—HTTP Basic authentication, session‑cookie based authentication, token (JWT) authentication, and OAuth 2.0—explaining their workflows, security characteristics, and providing Node.js/Express code examples for each.
This article walks through installing Node.js and Docsify, initializing a project, customizing the sidebar, navbar, and cover page, adding useful plugins, and deploying the Docsify site with Nginx, highlighting its speed and simplicity compared to other static site generators.
Noslate is Alibaba’s new open‑source, cloud‑native serverless JavaScript runtime that combines a custom cold‑start‑optimized Node.js distribution, the Aworker container with Warmfork and V8 startup snapshots for sub‑millisecond launches, a Noslated control plane for flexible worker orchestration, and a Corefile‑based debugger for low‑impact diagnostics.
Mongoose 6.7, the asynchronous‑environment MongoDB object‑modeling library for Node.js, introduces driver upgrades, new UUID schema type, $fill pipeline stage, enhanced TypeScript support, aliasing, mergeHooks, and timestamp utilities, while encouraging readers to like and share the article.
This article explains the fundamentals of JavaScript's event loop, covering single‑threaded execution, the role of macro‑tasks and micro‑tasks, differences between browser and Node.js implementations, and includes code examples that illustrate task scheduling and execution order.
Node.js 19, released today, updates the V8 engine to version 10.7, enables experimental node --watch mode, defaults HTTP/1.1 Keep‑Alive, stabilizes the WebCrypto API, removes experimental specifier‑resolution flag, and deprecates DTrace/SystemTap/ETW support while bundling llhttp 8.1.0 and npm 8.19.2.
This guide explains how to use Alibaba Cloud Function Compute layers—including custom and official public layers—to overcome large dependency packages, reduce deployment size, share code across functions, handle OS/architecture constraints, and provides step‑by‑step examples for Node.js Puppeteer and .NET 6 custom runtimes.
Noslate is an open‑source, cloud‑native project from Alibaba that introduces a lightweight JavaScript runtime, optimized Node.js distribution, and an offline debugger to dramatically improve serverless cold‑start times, elasticity, and diagnostic capabilities across diverse platforms, including ARM and traditional x86 environments.
Noslate is an open‑source, cloud‑native suite comprising a custom Node.js distribution, the lightweight Aworker runtime with Warmfork and Startup Snapshot technologies, all designed to dramatically reduce cold‑start latency and improve JavaScript task elasticity in serverless environments.
This article shares a backend team's practical experience of adopting GraphQL with Express and Apollo Server as a BFF layer, covering motivations, implementation steps, schema merging, proxy configuration, HTTP caching strategies, DataLoader optimization, code generation, and integration testing to improve performance and developer efficiency.
This tutorial walks through building a full‑stack backend for a frontend publishing platform using Koa2, @koa/router, and MongoDB, covering project initialization, route modularization, controller and service layers, middleware for response handling, environment‑specific configuration, and complete CRUD operations verified with Postman and Mongo shell.
This comprehensive guide explores Node.js’s architecture, core APIs, global variables, built‑in modules, function styles, the event‑loop mechanics, task scheduling, next‑tick and microtasks, libuv’s role, and strategies for off‑loading work, providing developers with a deep understanding of how Node.js runs JavaScript efficiently.
The article dissects Node.js v17’s source to reveal how the CommonJS `require` system is bootstrapped, how native modules are loaded, how `Module._load` resolves, caches, and executes user files, and how the overall CJS loading pipeline operates step‑by‑step.
This guide walks you through building a custom Node.js CLI scaffold using commander, chalk, inquirer, ora, and download‑git‑repo, explains essential package.json fields like bin and engines, and provides a complete demo that prompts users, downloads templates, and initializes projects ready for global installation.
This article explains how to use Wechaty’s PuppetPuppeteer to create a WeChat chatbot by intercepting login requests, injecting interaction scripts, and leveraging Angular services in the web client, while highlighting the risks of web‑client changes.
Building probe capabilities on OpenTelemetry gives cloud‑native teams a vendor‑neutral, standardized way to extend monitoring into full observability—supporting large‑scale, language‑specific instrumentation, plug‑and‑play plugins, and seamless integration with APM backends—so developers and operators can detect, debug, and predict faults across distributed containers.
This article walks through the design and implementation of a lightweight Mocha-like test framework for Node.js, covering automated testing concepts, core functions, asynchronous support, suite‑test tree construction, result collection, and verification with code examples and diagrams.
This article explains how Node.js determines its development direction through transparent governance, outlines how to track upcoming releases, describes the three release lines and recent features like ECMAScript Modules, node:test, and Corepack, and introduces active working groups and strategic initiatives for the next decade.
NodeGui combines Qt5 and Node.js, enabling developers to create desktop applications using familiar web technologies such as CSS and JavaScript, and offers support for popular frameworks like React, Vue, and Svelte seamlessly.
This guide walks you through installing Node.js, creating an npm account, initializing a Git repository, setting up package metadata with npm init, testing locally, logging in, and finally publishing or removing a package on the npm registry, complete with command examples and best‑practice tips.
This article reviews popular Node.js testing tools—including runners, coverage reporters, assertion libraries, mocking frameworks, HTTP and CLI testing utilities, and CI services—while discussing the practical necessity and ROI considerations of unit testing in modern development.
This article explains how third‑party library authors can configure package.json fields such as main, type, exports, and module to provide dynamic entry points for both CommonJS and ESModule consumers, while also covering TypeScript's resolution strategy and practical code examples.
This article explains the implementation principles of cnpm rapid mode, demonstrates how server‑side dependency‑tree generation, high‑speed downloading, tar‑based disk I/O, and a FUSE‑backed overlay filesystem together achieve up to ten‑fold faster npm installations and seamless CI/CD integration.
The recent Deno announcement reveals native npm package support, a faster HTTP server, and fierce competition from Bun, highlighting performance benchmarks, community reactions, and the ongoing race to become the fastest JavaScript runtime for backend development.
The article explains how toggling TypeScript's esModuleInterop flag changes import behavior between CommonJS and ES Module syntax, causing runtime errors like “TPS is not a constructor,” and offers fixes—either revert the flag and use namespace imports or enable it and use default imports.
This article explores how the Go‑based esbuild bundler can be used as a regular npm package in JavaScript, detailing the inter‑process communication protocol, binary encoding, and a minimal Node.js codec that enables fast, cross‑language API calls.
Node.js runs JavaScript on a single thread, limiting CPU‑intensive tasks, but the worker‑threads module enables developers to spawn hidden threads, offload heavy computations, and prevent main‑thread blocking, with a practical example showing how to parallelize a CPU‑bound task across multiple workers.
The ip2region 2.10.0 update introduces C# and Node.js query clients, provides detailed benchmark results, fixes a Python XDB searcher bug, disables buffer‑related functions for several languages, and includes a Maven dependency snippet for Java, all while maintaining microsecond‑level query performance for offline IP lookup.
The article traces EggJS’s seven‑year evolution, explains its original goals and architectural limits, discusses the shift toward TypeScript and cloud‑native design, and introduces Artus—a new pure framework of frameworks aimed at simplifying backend development and plugin reuse.
Library authors can configure package.json using main, type, exports, and module fields to provide separate CommonJS and ES module entry points, enabling runtime selection based on import or require, improving tree‑shaking, bundler compatibility, and TypeScript type resolution while restricting undefined sub‑paths.
This guide explains why and how to assess the health of npm dependencies, outlines a step‑by‑step upgrade process, highlights tools like npm outdated, npm audit, depcheck, and offers practical advice on changelog review, lock‑file management, and distinguishing dependencies from devDependencies.
Bun, a modern JavaScript runtime built on WebKit's JavaScriptCore, offers faster execution, built‑in Web APIs, TypeScript support, bundling, and npm compatibility, positioning itself as a high‑performance alternative to Node and Deno for server, edge, and local development.
This article introduces NanoID as a modern alternative to UUID, explains how to install and use it in JavaScript projects, compares performance, size, and security, discusses customization options and limitations, and suggests when to prefer NanoID for future development.
This article explains how to migrate a traditional Node.js Express web application to a serverless environment by using an adaptation layer that maps function‑compute events to HTTP requests, covering both API‑gateway and HTTP triggers, core implementation steps, and alternative deployment methods.
This article compiles a curated list of popular backend development frameworks across various programming languages, detailing each framework’s key features, advantages, and typical use cases to help developers choose the right tool for modern web applications.
This roundup covers techniques to slash JavaScript bloat, AI‑driven code generation, the latest ECMAScript 2022 features, a Node‑based Git tutorial, a hands‑on Vue 3 reactivity implementation, cloud‑native database practices, design system fundamentals, grid layout insights, and why front‑end development keeps accelerating.
This article provides an in‑depth tutorial on implementing server‑side rendering (SSR) for React applications, covering basic concepts, Koa server setup, ReactDOMServer APIs, routing with react‑router, Redux state hydration, CSS handling, performance optimizations, and modern SSR frameworks such as Next.js and Umi.
This article explores the architecture and implementation of VS Code’s JavaScript Debugger, detailing its use of the Debug Adapter Protocol, breakpoint handling, JavaScript Debug Terminal, automatic browser debugging, profiling, and debug console features, while also showing how OpenSumi adapts the latest debugger version.
This tutorial walks through creating a headless‑browser crawler using Puppeteer, extracting data from Juejin, storing it in a MySQL database, and exposing the results through an Express web service with user authentication, subscription, and a simple front‑end UI.
This article provides a detailed examination of Node.js's built‑in path module, explaining common usage scenarios, the internal execution flow, and a line‑by‑line analysis of key utility functions like resolve and join, complete with code examples and a comparative behavior table.
This article explains why, despite years of ESM usage, Node 18 and TypeScript 4.7 still encounter import errors, explores the differences between CommonJS and ESM module resolution, and shows how to configure tsconfig and package.json to make Node correctly run ESM code.
This article explains how VS Code extensions work by detailing Electron’s architecture, the multi‑process model, and the plugin loading mechanism, then walks through building a custom extension that adds a right‑click command to generate a Lynx component scaffold, complete with code snippets and configuration steps.
This newsletter highlights the formation of a JavaScript runtime interoperability group, new Chrome 102 DevTools features, Google’s performance‑boosting private prefetch proxy, a comparison of Vue and React performance, Node.js advantages for microservices, and several recent articles on frontend tooling, image optimization, and modern JavaScript language features.
This article introduces the open‑source visual tool NginxConfig, walks through installing Node.js and NginxConfig, shows how to configure documentation, front‑end, and API sites, generate the Nginx configuration, and deploy it on a Linux server.
Learn how to install Node.js, set up the open‑source NginxConfig visual tool, generate Nginx configuration files for static and dynamic proxies, and deploy them on a Linux server, all with step‑by‑step commands, code snippets, and practical examples.
RedisInsight is a lightweight, cross‑platform visual tool for Redis that offers data browsing, filtering, real‑time command analysis, support for multiple modules like RedisJSON and RediSearch, and includes a Workbench CLI, with installation steps using Node.js and Yarn.
This step‑by‑step guide shows how to create a React project, build Docker images using slimmer base images, multi‑stage builds, and Nginx, reducing the final image size from over a gigabyte to just a few megabytes while keeping the app functional.
The article walks through creating a lightweight, extensible Node.js command‑line utility without third‑party libraries, covering the command‑pattern design, implementation of split, upper, and word‑count commands, dynamic command loading, and best practices for modular, maintainable CLI development on Linux.
Node.js 18 introduces built‑in fetch and test modules, modernizes the standard library, adds a native test runner, upgrades the V8 engine, and outlines future roadmap items such as modern HTTP, improved type support, and enhanced ESM capabilities, all while offering quick installation via version managers.
This article walks developers through the fundamentals of the OSI model, TCP three‑way handshake and UDP characteristics, explains socket concepts, demonstrates Node.js server and client implementations with heartbeats and custom protocols, and details how to build and use a socket connection pool with the generic‑pool library.
This article explains the OSI seven‑layer model, the differences between TCP and UDP, the mechanics of TCP three‑way handshake and four‑step termination, how sockets work in Node.js, and how to implement custom protocols and a socket connection pool for high‑concurrency applications.
Node.js 18 introduces an updated V8 engine, experimental global Fetch and Web Streams APIs, a new test runner module, and platform‑specific binary upgrades, providing developers with modern JavaScript features and improved tooling for backend development.
Node.js web frameworks have evolved from lightweight tools like Express to enterprise solutions such as Nest and Midway, and now to front‑end‑focused platforms like Next.js, with modern designs emphasizing modularity, type safety, serverless support, and developer‑friendly hooks that bridge front‑end and back‑end development.
This article introduces the open‑source Wiki.js platform, explains its features, and provides a step‑by‑step guide to install it on Linux using Docker Compose, including Docker‑compose installation, configuration files, container management, and optional HTTPS setup with Caddy.
This guide walks you through installing the open‑source NginxConfig visual tool, configuring Node.js, generating Nginx configuration files for static and dynamic proxies, and deploying them on a Linux server to simplify backend operations.
This article introduces a set of ESLint rules that help developers write safer and more efficient asynchronous JavaScript by avoiding common pitfalls such as async promise executors, awaiting in loops, improper promise handling, and callback-related race conditions.
SingleFile is an open‑source browser extension and command‑line utility that lets you capture any web page—including images and resources—into one self‑contained HTML file, with support for Chrome, Firefox, Edge, and other major browsers, plus Docker and manual installation options.
In April 2022 Node.js will retire v12 LTS, launch v18, and follow its stable release policy that includes six‑month even releases, 18‑month Active LTS, and a 12‑month maintenance phase, prompting developers to upgrade to newer LTS versions such as v14 or v16.
This article describes how to capture Dingdong's delivery slot API using a mobile packet‑capture tool, set up a Node.js project that polls the API, parse the response, and send iOS notifications through the Bark service, enabling semi‑automatic grocery ordering.
This article introduces Alibaba's open‑source LowCodeEngine, outlines its key features, and provides a step‑by‑step tutorial—including environment setup, dependency installation, project launch, component configuration, data source integration, preview, and code export—to help developers quickly build a low‑code front‑end platform using React.
SingleFile is a cross‑browser extension and command‑line utility that lets users capture entire web pages—including images and resources—into a single HTML file, offering multiple installation methods, Docker support, detailed usage commands, and integration with custom user scripts.
This article investigates a Node.js V8 heap snapshot crash, tracing the segmentation fault to a faulty context extension slot, detailing the assembly analysis, reproducing the issue, and presenting a backported fix for Node‑v14.
This article explains what JSON Web Tokens are, how they are composed of a header, payload, and signature, demonstrates creating and encoding each part with Base64 and Node.js, and discusses the security purpose of signatures and appropriate use cases for JWTs in web applications.
This article explains the lightweight JWT specification, demonstrates how to build a token with header, payload, and signature using Base64 encoding and Node.js, and discusses its security properties, verification process, and suitable use cases for web authentication.
This article explains how to create the open‑source pm2-intercom-log4js tool to reliably synchronize log4js output in PM2’s multi‑process mode, covering log4js’s sync mechanism, PM2 process management, IPC communication, and alternative messaging approaches with practical code examples.
This newsletter curates a selection of recent technical articles and resources, covering front‑end development breakthroughs like Vue component extraction, React 18 features, Babel compilation, as well as Web 3.0 perspectives, Node.js design principles, email HTML/CSS techniques, and a collection of efficiency‑boosting tools for developers.
Front‑end development has progressed from early back‑end‑only sites to a distinct discipline covering HTML, CSS, and JavaScript, embracing SPA techniques, micro‑frontend architectures, and full‑stack capabilities via Node.js and BFF layers, requiring engineers to grasp both client presentation and server‑side concepts for collaborative, modular, reusable web applications.
This article curates recent front‑end developments, covering emerging frameworks like Pinia, evolving Node.js web standards, low‑code engine open‑source releases, architectural insights, Puppeteer PDF performance tricks, and sandbox security, while also inviting developers to join the Cloud Academy front‑end team.
This article explains the lightweight JWT specification, walks through its three-part structure (header, payload, signature), shows how to encode and sign a token with Node.js, and demonstrates using a JWT‑based link to perform a friend‑request operation without requiring the recipient to log in.
This article traces the evolution of Node.js web frameworks—from early lightweight options like Express and Koa, through enterprise‑grade solutions such as Egg and Midway, to modern front‑end‑oriented stacks like Next.js and Nuxt.js—highlighting their features, trade‑offs, and the progressive design principles behind Alibaba’s Midway framework.
This article explains how JavaScript's single‑threaded engine uses the event loop to manage synchronous and asynchronous tasks, distinguishes macro‑tasks from micro‑tasks, and compares the implementations in browsers and Node.js, including version‑specific behavior and common pitfalls.
