This article recounts a real‑world incident where a simple JSON.parse() try‑catch block triggered a massive memory leak in a Node.js 12 application, explains how the V8 engine’s script_list retained orphaned script objects, and shows how tools like gdb, llnode and heapdump can be used to locate and fix the issue.
This tutorial explains how to handle errors in JavaScript using Promise.reject/resolve, then/catch/finally, Promise.all, Promise.any, Promise.race, Promise.allSettled, async/await, async generators, and Node.js callback and EventEmitter patterns, providing clear code examples for each approach.
This article recounts an eight‑year journey from a C++ internship to senior roles at Alibaba and Ant Group, highlighting how mastering Node.js, embracing code review, unit testing, open‑source contribution, and continuous sharing can accelerate a software engineer's career.
This guide shows how to install and run lowcode‑mock, create mock APIs with Koa, generate mock data from YAPI or JSON using the yapi‑code plugin, configure custom mock rules, simulate delays, handle HTTP error codes, and proxy requests to real back‑ends, all without needing regex‑based mocking.
This guide introduces lowcode-mock, a zero‑configuration mock server that forwards regex‑matched requests to backend endpoints, covering installation, startup, route creation, generating mocks from YAPI or JSON, adding delays, handling HTTP errors, and proxying requests, all with code examples.
This article explains why session management is needed, compares cookies, sessions and JWT, describes JWT's structure and workflow, and provides a complete Node.js/Koa implementation with code examples and a discussion of its advantages and drawbacks.
The article examines JavaScript’s event loop by contrasting macro‑tasks and micro‑tasks, tracing their spec‑defined origins, showing how callbacks, timers, Promises, async/await and generators are queued, and highlighting differences between browsers and Node.js (pre‑v11 vs v11+) that affect execution timing.
This article surveys the rise of microservices and presents a comprehensive list of widely used Java, .NET, Node.js, Go, and Python frameworks, highlighting their features, adoption statistics, and suitability for building scalable, loosely‑coupled backend systems.
This article details the Midway Serverless framework's cloud‑native, React‑Hooks‑inspired approach to backend development, covering Alibaba's Node.js serverless landscape, the framework's architecture, new integrated development model, functional R&D features, and future open‑source plans.
This talk walks through Alibaba's Node.js Serverless landscape, introduces the Midway Serverless framework and its new cloud‑integrated development model, and details its functional R&D, hook‑based APIs, performance optimizations, and real‑world adoption, highlighting future open‑source plans.
This article explains how Node.js child_process.spawn handles stdio options, why failing to attach 'data' listeners or consume pipe streams can cause the child to block, and demonstrates experiments, debugging techniques, and proper configuration such as using 'ignore' or 'pipe' to avoid deadlocks.
Umajs is a lightweight Node.js web framework written in TypeScript that offers rich built‑in decorators, IOC, AOP, a flexible plugin system, and a unified Result API, enabling developers to build high‑performance, maintainable backend services with minimal boilerplate.
Vivo Mall transformed its Java‑centric frontend into a layered Vue‑Node architecture, separating frontend and backend, unifying multiple platforms with BFF and SSR, building a shared UI library, adopting extreme modularization, and enforcing coding standards and quality tools to double development efficiency and improve scalability.
This article provides a step‑by‑step tutorial on installing Node, Vue‑CLI, and Electron, creating and running Electron projects, explaining the source directory layout, main and renderer processes, and showcasing real‑world examples such as a cloud music player and a QQ music client.
This article explains what serverless computing is, outlines its key advantages and limitations, presents typical use cases such as video transcoding and IoT monitoring, compares it with micro‑services, and provides a step‑by‑step Alibaba Cloud FaaS deployment tutorial using Funcraft scripts and CLI commands.
This tutorial walks you through creating a modular, plugin‑based CLI scaffold for a Valentine’s Day project, covering monorepo setup with Lerna, core CLI package creation, plugin registration, command handling, inter‑plugin communication with tapable, and deployment considerations.
This article chronicles Yuque's evolution from a low‑cost prototype built on internal BaaS services to a fully commercialized, cloud‑native knowledge platform, highlighting the shift to IaaS, micro‑services, and serverless function compute to improve scalability, stability, security, and cost efficiency.
This article chronicles Yuque's evolution from a hobbyist prototype to a commercial cloud‑native knowledge platform, detailing its backend migrations, adoption of Node.js, Egg, React, serverless function compute, micro‑service splits, and the architectural lessons learned for stability, cost efficiency, and scalability.
This article analyzes the shortcomings of the existing RESTful Node BFF service for Qunar's domestic hotel platform—such as data customization difficulty, manual documentation, and redundant fields—and demonstrates how adopting GraphQL can provide precise data fetching, automatic schema documentation, and unified request composition to improve development efficiency and system performance.
This article details Suning’s comprehensive front‑end strategy for the 818 shopping festival, covering Node.js‑based release workflows, the no‑code Titan platform with Weex, a multi‑platform mini‑program system, and a Pixi.js game engine that together boost performance, flexibility, and developer efficiency.
This article explains Midway Serverless's core capabilities, design principles, anti‑corrosion architecture, toolchain, and migration workflow, showing how a single codebase can run unchanged across multiple cloud platforms while simplifying legacy application transition to serverless environments.
This article introduces Midway Serverless, explains its background in the serverless trend, details its architecture, directory structure, toolchain, dependency‑injection mechanism, anti‑corruption layer, lifecycle hooks, and how it enables seamless migration of traditional Node.js applications to multiple cloud platforms with minimal code changes.
The article demonstrates how to use Puppeteer—a Node.js API built on the Chrome DevTools Protocol—to run headless Chrome for tasks such as scraping Google emoji images, generating screenshots or PDFs, and automating front‑end tests by launching a browser, navigating pages, handling cookies, simulating user input, capturing responses, and saving results.
This tutorial explains four practical methods—PyExecJS, js2py, Node.js, and PyV8—to execute JavaScript code from Python, providing code examples and tips for handling encrypted parameters during web crawling.
This article explains how to build cross‑platform desktop applications using Electron, covering its Chromium‑Node.js architecture, the transition from CLI to GUI, practical workflow automation, update mechanisms, and comparisons with alternatives, illustrated with code examples and real‑world use cases.
Node.js’s single‑threaded model relies on an asynchronous continuation framework, and this article explains the core concepts—execution frames, continuations, link points, ready points—and how async_hooks, AsyncLocalStorage, and related APIs can be used to trace, debug, and ensure clean async task handling in backend applications.
This article explains how Alibaba's Midway Serverless framework reduces server and governance costs by up to 70%, accelerates front‑end development and deployment, and addresses the benefits, challenges, and operational impacts of adopting a serverless, cloud‑native architecture.
This article provides a comprehensive tutorial on building cross‑platform desktop applications with Electron, covering environment preparation, installation of Node, Vue‑CLI and Electron, project creation, directory structures, main‑renderer architecture, and practical examples such as a cloud music player and a QQ music client.
This guide demonstrates how to use a single Dockerfile and Jenkins to test a Node.js project against multiple Node versions in a CI pipeline, leveraging Docker build arguments, custom scripts, and volume caching to simplify environment management without installing numerous tools.
This article explores VSCode’s modular architecture for building large‑scale IDEs, dives into micro‑kernel plugin patterns with Vue and Xigua Player, showcases UI animation trends, introduces ARCore Depth API, highlights Flutter’s desktop support, and reviews Node.js monitoring and load‑testing tools.
This article explains how to upgrade the think-mongo module for ThinkJS to work with MongoDB 4.x, detailing API changes, new CRUD method mappings, transaction support, and provides code examples for adapting existing projects to the latest MongoDB features.
This tutorial walks you through using Pipcook to create an image style‑transfer pipeline with CycleGAN, covering dataset preparation, pipeline configuration, model training on GPU, and inference code that converts apples to oranges and vice versa, all illustrated with example images.
Midway Serverless v1.0 introduces a cloud‑native, TypeScript‑based framework that unifies front‑end and back‑end development, simplifies platform migration, prevents vendor lock‑in, and leverages existing koa and egg ecosystems to dramatically improve development efficiency.
The article traces JavaScript’s module evolution from inline scripts to CommonJS’s file‑scoped exports and require system, explains its minimal bundler implementation, compares AMD and CMD alternatives, and finally introduces native ES6 import/export syntax, highlighting key differences and the gradual deprecation of CommonJS.
This article surveys the rise of microservices, explains their advantages, and provides a concise overview of the most popular Java, .NET, Node.js, Go, and Python frameworks that enable developers to build scalable, loosely‑coupled services.
This article outlines a decade‑long, game‑style learning path for aspiring front‑end engineers, covering fundamentals, framework mastery, Node.js, engineering tooling, code abstraction techniques, and higher‑level thinking to help developers progress from beginner to senior level.
This guide walks you through running Jenkins in Docker, unlocking and configuring it, creating development and production Git branches, writing a Jenkinsfile with build, test, deliver and deploy stages, and executing the pipeline for both environments using Blue Ocean.
This guide explains how to use Node.js, Puppeteer, and Nodemailer to capture Grafana panel images, generate email reports, and schedule automated deliveries, covering environment setup, code modules, screenshot techniques, font handling, and optional cron integration for continuous monitoring.
This article describes the design and implementation of a Serverless‑based one‑stop node service management platform, covering its full‑stack engineering architecture, frontend and backend project organization, logging, process monitoring, one‑click deployment, and a comparison of Serverless solutions, while sharing practical challenges and technical solutions.
This article explains how Node.js’s AsyncHooks API can be used to implicitly propagate request context across asynchronous calls, illustrates the mechanism with login flow diagrams, compares explicit context handling in frameworks like Express and Egg, and discusses performance and adoption considerations.
This article introduces Nightwatch.js 1.3, outlines its new BDD interface, additional assertions and APIs, provides step‑by‑step installation of Nightwatch and browser drivers via npm, explains CLI options, demonstrates running a sample test, and offers guidance on unit testing and example projects.
This article explains how to add a health‑check endpoint to a Node.js service, use gateway polling to verify availability, and coordinate smooth releases with Egg.js plugins, while also covering CDN asset management and manifest‑based code discovery for front‑end resources.
This guide walks front‑end developers through the essential steps, tools, and best practices for using Midway FaaS to build serverless applications, highlighting four key pitfalls and how to avoid them while simplifying deployment across major cloud providers.
This article explains the fundamentals of HTTP caching, covering strong and conditional cache mechanisms, the relevant response headers, and provides practical Node.js/Express code samples to demonstrate how browsers handle cache validation and expiration.
This article introduces Boa, a Node.js library that bridges CPython, enabling JavaScript developers to import and use Python packages—especially machine‑learning libraries like PyTorch—seamlessly within Node.js, complete with practical code examples and API explanations.
This article walks through setting up a comprehensive testing workflow for a Node.js backend, covering Jest configuration, unit and integration tests with SuperTest, in‑memory MongoDB, login helpers, mocking, snapshot testing, coverage reporting, CI integration, and the adoption of TDD/BDD practices.
This step‑by‑step guide shows how to set up a personal blog on a CentOS 7.7 server with Hexo, configure Git, SSH keys, and a GitHub repository, then deploy the site to GitHub Pages and optionally bind a custom domain.
A 2020 survey of 1,113 Node.js developers led by Alibaba and Tencent uncovers demographic distributions, typical job roles, preferred application and development scenarios, toolchains, language usage, pain points, learning resources, and future technology interests, providing a comprehensive view of the Node.js ecosystem.
A 2020 survey of 1,113 Node.js developers, conducted by Ecma members and led by Alibaba and Tencent, reveals demographic trends, preferred languages, frameworks, tools, deployment practices, learning habits, and future interests, providing a comprehensive snapshot of the Node.js ecosystem.
This tutorial introduces GitLab CI/CD, explains its core concepts, reasons to choose it, outlines typical pipeline stages and jobs, and provides a complete example .gitlab-ci.yml configuration with code snippets for building, testing, and deploying a Node.js application.
This article explains the role of a middle tier in web systems, describes middleware concepts, outlines the advantages of using Node.js as a middle layer, and provides a step‑by‑step Koa‑based implementation with code examples and deployment considerations.
This technical guide explains how to build a Vue SSR service using Koa, outlines the project benefits and trade‑offs, details the directory structure, server and client entry files, webpack configurations, and describes a Docker‑based CI/CD pipeline with Kubernetes deployment for scalable production environments.
This article explains how the Taro IDE team built a cross‑platform desktop client using Electron, covering its architecture, development workflow with electron‑react‑typescript, performance and size optimizations, and future plans for modular web‑based capabilities.
This article walks through the benefits, trade‑offs, and step‑by‑step implementation of Vue server‑side rendering using Koa, then shows how to containerize the service with Docker and automate deployment with Kubernetes, covering code, configuration, and common pitfalls.
This tutorial explains how to install Node.js and docsify-cli, initialize a docsify project, customize the navigation bar, cover page, search and code highlighting, and finally deploy the documentation site to GitHub Pages or a cloud server using Nginx, while providing troubleshooting tips.
This article explores the origins and purpose of the JavaScript event loop, explains how browsers and Node.js implement it with external and internal queues, compares their differences, and illustrates the concepts through detailed code examples and visual diagrams.
This article provides a comprehensive, step‑by‑step tutorial for installing and configuring the Yapi API management platform on a CentOS 7.6 server, covering system prerequisites, Node.js and MongoDB setup, environment configuration, deployment commands, and common error troubleshooting.
This tutorial provides a comprehensive introduction to Node.js, covering its runtime environment, core global objects, module system, command‑line interface development, npm package management, script automation, and event handling with practical code examples and explanations for front‑end engineers transitioning to back‑end development.
This article describes how a content‑heavy company built a scalable, high‑quality image generation service for its app by leveraging Puppeteer, a custom connection‑pool implementation, CDN caching, launch‑argument tuning, and performance monitoring to achieve low latency and high throughput.
Learn how to implement request-scoped data in Node.js by leveraging Async Hooks and AsyncLocalStorage, covering use cases, trace ID management, code examples, and best practices for building robust, session-level isolation in backend services.
This article provides a step‑by‑step technical guide to the AES encryption and decryption algorithm, covering state matrix construction, key expansion, round operations, final round differences, and practical Node.js code examples for handling padding and common implementation pitfalls.
This article explains how the react-native-cli tool automates the creation of a React Native project by installing required software, generating the project structure from templates, installing node and iOS dependencies, and detailing the underlying code flow from the CLI entry point to the init and generateProject functions.
This article explains why personalized tech‑news gathering is valuable, proposes a DIY framework for controlling sources, collection, filtering, reading experience and iteration, and demonstrates three concrete Node.js scraping examples—HTML pages, API data, and WeChat public accounts—plus extended thoughts on building a simple product.
This article introduces the free, open‑source kmdr CLI tool, explains how to install it with Node.js or use the web demo, and demonstrates its ability to break down complex Linux commands into readable modules, covering a wide range of common utilities.
This article introduces Appium, an open‑source cross‑platform mobile automation tool, and provides a step‑by‑step guide to set up the Android development environment, install the Appium server (both CLI and desktop), and configure Python with the Appium‑Python client, including necessary code snippets.
Node.js, a JavaScript runtime built on Chrome’s V8 engine, originated in 2009 when Ryan Dahl applied event‑driven, asynchronous I/O to achieve high‑concurrency server‑side performance, and has since grown into a widely adopted platform—supported by npm, governed by the OpenJS Foundation, and used for scalable I/O‑intensive web, enterprise, and data applications despite challenges like callback complexity and package‑registry incidents.
This article explains how MPM's PageData serves as the core JSON abstraction that links the visual editor with various rendering engines, detailing its structure, generation process, and parsing workflows for static H5, direct H5, and mini‑program platforms.
This article recounts a four‑month journey of moving Alibaba's high‑traffic "Wow Video" shopping service from a traditional Java backend to a Node.js Serverless/FaaS platform, detailing the business background, development model, pain points, migration steps, challenges, and the lessons learned for front‑end engineers seeking capability upgrades.
This article reviews Youku's front‑end evolution over the past few years, detailing the migration from PHP to Node.js, the shift from Bigpipe + jQuery to React SSR, performance gains, component upgrades, and the roadmap toward serverless rendering.
This article provides a step‑by‑step tutorial on installing Node, configuring npm mirrors, installing Vue‑CLI and Electron, creating a sample project via the official quick‑start repository or vue‑cli template, and explains the key directory structures and main‑renderer process architecture of Electron applications.
This article recounts the half‑year journey of migrating the Wow Video short‑video shopping feature to a Serverless Node FaaS architecture, highlighting high‑traffic challenges, development pain points, the upgraded R&D model, migration steps, monitoring tools, and the strategic decisions that shaped the front‑end team's evolution.
This article recounts the six‑month journey of migrating the Waou Video short‑video shopping feature to a Serverless Node FaaS architecture, highlighting business characteristics, development pain points, the upgraded R&D model, migration steps, performance gains, and future considerations for front‑end engineers.
Fkill, a cross‑platform Node.js CLI tool, lets you interactively search and terminate multiple processes; this guide shows how to install it via AUR or npm, use its interactive UI, kill processes by PID, name or port, and leverage command‑line options for force, verbose, or silent modes.
The article outlines Node.js's rapid growth, its 2020 release cadence, and highlights major updates such as ECMAScript module support, WebAssembly integration, diagnostic reports, expanded internationalization, and other performance and security enhancements.
This article explores the evolution of ICBU’s cross‑border supply‑chain web architecture, detailing the rise of Serverless, the shift from traditional Webx to BFF and Egg‑based micro‑applications, the implementation of FaaS/EaaS, engineering and monitoring practices, and the resulting performance and business benefits.
This article explains why WebAssembly needs a standardized system interface, introduces the WebAssembly System Interface (WASI) for portable and secure execution, and provides a step‑by‑step tutorial for compiling a C "cat" program with wasi‑sdk and running it via Node.js.
This article explains Node.js's internal concurrency model, covering the distinction between processes and threads, debunking the single‑thread myth, and detailing how the event loop, child processes, cluster mode, and worker_threads enable high‑performance, multi‑core execution.
This article introduces Docker as a leading container platform, explains its core concepts, architecture components, and common commands, and provides step‑by‑step tutorials for deploying a Node.js application and MongoDB using Dockerfile, Docker Compose, and related tools.
This guide shows how to generate GitHub badges with shields.io, write unit tests using AVA, measure coverage with nyc, report results to Codecov, and automate the whole process with Travis CI, providing a complete CI/CD workflow for Node.js projects.
This tutorial walks through creating a lightweight Memcached client in Node.js, covering cluster routing with consistent hashing, low‑level TCP communication, a reusable connection‑pool implementation, and a custom protocol for get operations, complete with practical code examples.
This article delves into Node.js’s module system, explaining the CommonJS specification, how Node implements module loading, resolution, caching, and execution, and provides detailed analysis of core source code including Module constructor, require, _load, _resolveFilename, and file extension handling.
This article details how Ctrip builds, deploys, tests, releases, and operates Node.js applications—including engineering processes, core middleware, Docker-based deployment, multi‑process communication, monitoring, and full‑link tracing—while sharing practical lessons learned from real‑world production use.
This article explains the rarely understood ES6 features WeakMap and WeakSet, compares them to Java’s weak references, and demonstrates practical Node.js and front‑end use cases such as memory‑safe context storage, result caching, and tracking unhandled promise rejections.
This article walks you through converting an existing Node.js codebase to TypeScript, covering directory restructuring, TypeScript and ESLint setup, handling common import and type errors, configuring debugging in VSCode, and gradually strengthening type safety while preserving project functionality.
Node.js 13.2.0 removes the experimental flag, making ES module support stable and defining clear rules—file extensions, package.json type fields, and runtime flags—to decide whether a file is loaded as an ES module or a CommonJS module.
This article explains the limitations of short and long polling, introduces the WebSocket protocol and its handshake mechanism, and provides complete client‑side and Node.js server code to build a basic real‑time chat application with heartbeat keep‑alive support.
This article explains how V8 reduces the number of microtasks created by async/await by eliminating redundant Promise wrappers and streamlining then‑handlers, showing the original transformation code, the optimizations applied, and the resulting execution order in both browsers and Node.js.
This tutorial explains how to use the pkg tool to bundle a Node.js script into a standalone executable for Windows, macOS, and Linux, covering installation, sample code, configuration, and command‑line options to distribute applications without requiring a separate Node.js runtime.
This article recounts a four‑month journey of moving the high‑traffic "Wow Video" short‑video shopping service to a Node.js FaaS platform, detailing the business background, development workflow, pain points, migration strategy, and the technical and personal growth experienced along the way.
This article examines the rapid rise of Serverless in 2019, analyzes the specific front‑end challenges it creates, explores framework and rendering adaptations such as Egg.js, Next.js and Umi SSR, and proposes architectural upgrades and future directions for more efficient, empowered front‑end development.
This article explains how front‑end teams can leverage the Node.js Bull queue to implement lightweight asynchronous calls, rate‑limiting traffic spikes, and distributed scheduled jobs, detailing the selection rationale, architectural changes, core Redis‑based mechanisms, and practical deployment tips.
The article explains how serverless cloud functions can replace traditional SSR servers by running isomorphic React/Vue rendering within a FaaS environment, detailing the architecture, packaging, debugging, NGW gateway integration, performance bottlenecks like cold starts, and optimization strategies that cut deployment and operation effort by over 80%.
This article explains how V8’s compiler, garbage collector, and a bug‑inspired optimization improve async/await performance across Node.js versions, detailing benchmark results, code behavior differences, and the engine’s internal steps for handling await.
This article walks through a real‑world Node.js out‑of‑memory crash, explains how to detect the OOM killer via system logs, uses Heap Profiler and process.memoryUsage() to pinpoint memory growth, and presents a practical fix by throttling file‑write operations and improving monitoring.
This guide explains how the mongoose-modified-at plugin automatically records publication timestamps for MongoDB documents, covering installation, schema configuration, API options, simplified usage, async support, compatibility with Mongoose 4.x, and test‑coverage details.
NGW (Node Gateway) is a Node.js‑based frontend access layer that sits between a unified gateway and business services, providing dynamic request routing, Redis‑driven configuration, a Tapable plugin system, and containerized CI/CD to enable serverless BFF/SFF architectures with rapid builds, high reliability, and dramatically reduced deployment effort across multiple Tencent Cloud projects.
The OpenJS Foundation launched two professional Node.js certifications—JSNAD for application development and JSNSD for service development—detailing eligibility, domain competencies, exam format, costs, and the foundation's role in supporting the JavaScript ecosystem.
Tencent Video’s front‑end Node.js services achieve massive concurrency stability through a layered architecture that combines GSLB‑directed CDN, TGW, Nginx, and clustered workers, reinforced by process guardians, three‑tier disaster‑recovery fallbacks, multi‑level caching with lock mechanisms, and comprehensive logging and alerting.
This article examines why occasional ECONNRESET errors occur in HTTP RPC keep‑alive connections, explains the underlying TCP and OS mechanisms, and compares several practical mitigation strategies—including retries, connection pre‑discard, idempotent handling, and protocol upgrades such as HTTP/2 and gRPC—to help developers choose the most reliable solution.
This talk explains Alibaba's journey of upgrading its front‑end development and migrating thousands of Node.js BFF applications to a Serverless architecture, detailing the challenges, benefits, migration patterns, and practical insights for large‑scale cloud‑native transformation.
