This article explains what a Content Delivery Network (CDN) is, how it works through DNS and smart scheduling, its key components, and essential terminology such as CNAME records, origin host, and protocol origin, illustrating how CDN optimizes web traffic and speeds up user access.
This article explains the fundamentals of video streaming, media transcoding, and CDN technology, then details Alibaba Cloud's live streaming architecture, including terminology, workflow stages, system components, business functions, and typical application scenarios such as UGC, e‑commerce, sports, gaming, and online education.
This guide presents nine practical methods to accelerate GitHub access—including mirror sites, Cloudflare Workers proxies, raw file CDN replacements, JsDelivr usage, Gitee fork transfers, and manual hosts file edits—complete with URLs, step‑by‑step instructions, and illustrative screenshots.
This guide presents nine practical methods to accelerate GitHub access, including using mirror sites, Cloudflare Workers proxies, raw file CDNs, Chrome extensions, Gitee fork imports, and manual hosts file modifications, each with step‑by‑step instructions and relevant URLs.
This article analyzes how traditional CDN infrastructure can be transformed into a comprehensive edge computing platform, covering CDN fundamentals, edge computing layers, IaaS/PaaS/SaaS models, container and Kubernetes deployment, future trends, and practical Q&A insights.
This article explains what a Content Delivery Network (CDN) is, how it optimizes web traffic through caching and intelligent DNS routing, details the traditional versus CDN-enabled access processes, and clarifies related terms such as CNAME records, DNS, origin host, and protocol origin.
This article explores how traditional CDN infrastructure can be transformed into a large‑scale edge computing platform, covering architectural layers, cloud‑edge collaboration, container‑based deployment with Kubernetes, emerging technologies such as programmable CDN, secure containers, and practical Q&A from real‑world implementations.
This guide explains multiple practical techniques—including mirror sites, Cloudflare Workers proxies, Chrome extensions, JsDelivr, Gitee forks, and hosts file modifications—to significantly speed up GitHub repository cloning, release downloads, and raw file access for users facing slow connections.
This article explains what a Content Delivery Network (CDN) is, how it optimizes web traffic by caching resources at edge nodes, compares traditional and CDN-enabled access flows, and clarifies related terms such as CNAME records, DNS, and origin host configuration.
This article compares Cloudflare and Amazon CloudFront, outlining their respective CDN architectures, setup processes, feature sets, performance characteristics, security offerings, and ideal use cases to help users choose the most suitable service for their web applications.
The article details Wukong’s systematic H5 performance overhaul—adding DNS‑prefetch, CDN and HTTP/2, compressing fonts and images, applying lazy‑load and WebP, minimizing reflows with Vue lifecycle hooks, using skeleton screens, and reporting metrics—resulting in load‑time cuts of up to 70 % and scores rising from the 40s‑60s to over 90.
This article explains how Content Delivery Networks (CDNs) dramatically reduce page load times by caching static resources near users, outlines the step‑by‑step request flow, discusses cache strategies, and highlights both the advantages and limitations of CDN adoption.
This article explains why and how to enable CDN caching for server‑side rendered pages, outlines the conditions for its use, offers optimization tips, and provides step‑by‑step Koa middleware code to control cache behavior and avoid common pitfalls.
This article explains the fundamentals of the Domain Name System (DNS), covering its hierarchical structure, the different types of top‑level domains, and the detailed nine‑step process by which a user's request is resolved from a human‑readable URL to an IP address.
This article explains the DNS system, its hierarchical structure from root servers to local resolvers, and walks through the nine‑step process that converts a human‑readable domain name into an IP address, including record types, TTL, GTM, CDN, and application server interactions.
The article chronicles the development of static resource services—from early ASP examples and static‑dynamic separation to modern CDN, cloud storage, URL handling, online concatenation, and multi‑region deployment—highlighting technical decisions, performance trade‑offs, and future challenges for front‑end infrastructure.
This article explores the limitations of traditional front‑end performance techniques for first‑page loads and introduces a new Edge Stream Rendering (ESR) approach that leverages CDN edge computing to stream static and dynamic content sequentially, reducing TTFB, white‑screen time, and core content display latency across various network conditions.
This article presents a detailed, step‑by‑step performance test of CDN acceleration on Tencent Cloud and Alibaba Cloud, comparing raw bandwidth, CDN‑enabled downloads, caching behavior, and regional variations to reveal when CDN brings measurable speed improvements and when it does not.
This article details the background, initial ECS‑based deployment, performance bottlenecks during rapid user growth, and the comprehensive cloud‑native migration—including DNS load balancing, managed Kubernetes, CDN acceleration, RDS/Redis replacement, and NAS/OSS storage—resulting in significant scalability and operational improvements for the Smart Citizen Pass mini‑program.
When a CDN becomes inaccessible, a website's static resources can disappear, but by detecting failed CDN requests and automatically retrying them from the main domain—while preserving HTML, CSS, image, and especially JavaScript execution order—developers can ensure continuous site availability.
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.
Youku completed a six‑month, full‑scale IPv6 migration in 2018, upgrading client and server stacks, deploying dual‑stack then IPv6‑only networks with 4over6, solving challenges like lack of IPv6 environments, OS module updates, MTU handling, address libraries, CDN coordination, and robust fallback, testing, and monitoring.
This guide shows how to build community and feed‑stream features on Tencent Cloud by combining COS for scalable media storage, CI for image processing and anti‑hotlinking, MPS for video transcoding and moderation, and CDN for fast global delivery, all configured via URL parameters.
This article details Xianyu’s comprehensive Flutter image‑loading optimizations—including native caching, low‑end device adaptation, disk caching, CDN size reduction, external‑texture bridging, multi‑page memory management, and package‑size cuts—offering practical techniques and insights for mobile developers seeking high‑performance image handling.
This guide walks you through deploying a low‑cost, private Bitwarden password manager on Tencent Cloud by preparing a domain and SSL certificate, installing Docker on a CentOS CVM, running Bitwarden and Nginx containers, optionally enabling CDN, configuring backups to COS, and applying security hardening such as two‑factor authentication.
To improve web performance, the article examines network‑level optimizations such as request flow, load balancing techniques (including DNS‑based and hardware load balancers), reverse proxy mechanisms like Nginx, and the role of CDNs in caching static assets to reduce latency and enhance scalability.
This guide explains how to set up Qiniu Cloud object storage as an image‑hosting service, configure a CDN domain with CNAME records, bind a custom domain, and use the MPic tool to automatically upload images for use in Markdown editors.
This article explains how web load balancing distributes HTTP/HTTPS requests across multiple servers to improve concurrency, availability, and scalability, covering DNS round‑robin, CDN acceleration, IP load balancing, reverse proxy, and layer‑4 techniques with practical insights and diagrams.
This article explains what a Content Delivery Network (CDN) is, how caching works at both the browser and edge‑node levels, the step‑by‑step request flow, common drawbacks, caching strategies, and how developers can refresh CDN caches to keep content up‑to‑date.
This article explains the concept of web load balancing, its basic principles, and the most common techniques—including DNS round‑robin, CDN acceleration, IP‑level load balancing, HTTP redirects, and reverse‑proxy solutions—while discussing hardware vs. software options, session handling, and high‑availability considerations.
The article details 360's external network quality monitoring system, explaining its background, real‑time detection features, CDN‑based source host selection, three‑layer architecture, data collection and storage pipelines, fault‑diagnosis strategies, and visualization approaches for rapid network fault localization.
This article explains the concept of web load balancing, its underlying one‑to‑many mapping principle, and compares common techniques such as DNS round‑robin, CDN acceleration, IP‑level load balancing, HTTP redirects, and reverse‑proxy solutions, highlighting their advantages, limitations, and typical deployment scenarios.
Youku’s low‑latency live‑streaming system replaces the traditional RTMP‑CDN pipeline with a controllable media‑transport architecture that combines private real‑time protocols, WebRTC, and edge nodes, cutting anchor‑to‑anchor latency below 300 ms and anchor‑to‑viewer latency to under 415 ms while preserving smooth playback.
Facing pandemic-driven remote teaching, Alibaba’s live streaming team redesigned their media pipeline, combining CDN, custom real-time protocols, WebRTC, and cloud-native techniques to control transmission and playback buffers, achieving sub-300 ms host-to-host latency and under-600 ms host-to-viewer latency while maintaining smooth playback.
The article describes how 360 implements an external network quality monitoring system that uses CDN nodes as source hosts to perform minute‑level, end‑to‑end ping measurements, stores results in time‑series and other databases, analyzes them to detect VIP, data‑center or ISP faults, and generates visualized alerts and reports for operations teams.
The guide explains Tencent Cloud CDN’s dual‑stack IPv6 architecture and walks users through adding an accelerated domain, enabling IPv6, configuring the origin server, creating the required CNAME record, and verifying both back‑to‑origin and public IPv6 access using command‑line tests, while noting the feature’s trial status.
This article walks through a typical image‑service architecture, detailing each step from the user's search query and DNS lookup through load balancing, caching, database access, asynchronous processing, search, cloud storage, CDN delivery, and final page rendering.
The article analyses practical drawbacks of S3 static‑website hosting, the complexities of CDN query‑string caching, and protocol incompatibilities such as HEAD + Range and If‑Match handling, offering concrete lessons and mitigation strategies for cloud operations teams.
At the Cloud+ Community Developer Conference, Tencent’s Liao Long highlighted how 5G’s high bandwidth and low latency are driving CDN edge‑computing innovations—such as live‑edge transcoding, smart‑retail analytics, voice‑assistant processing, MEC‑based low‑latency services, and dynamic burst‑resource systems—to meet the surge in mobile users and bandwidth‑intensive applications.
This article provides a comprehensive guide to caching technologies, covering HTTP caching, CDN caching, load‑balancer caching, in‑process caching, and distributed caching, while explaining strategies, algorithms, and common pitfalls such as cache avalanche, penetration, and breakdown.
This article explores the pervasive role of caching in modern systems—from browser and HTTP caches to CDN, load‑balancer, in‑process, and distributed caches—detailing their mechanisms, algorithms, common pitfalls like cache avalanche, penetration and breakdown, and practical mitigation techniques for robust backend performance.
The 2019 Tencent Cloud "5G Wind Rising" event examined how 5G's high bandwidth and low latency drive edge computing, reshaping CDN architectures, revealing new business opportunities, technical challenges, and real‑world case studies such as smart retail, voice assistants, and cloud gaming.
This article explains what Time to First Byte (TTFB) actually measures, why network latency and server processing heavily influence it, and lists the many factors—from DNS lookup to CDN routing—that can increase TTFB, helping developers prioritize performance improvements.
This article explains Alibaba Cloud’s Edge@ACK edge container solution, covering the rise of edge computing, the architecture and standardization of cloud‑edge‑device integration, autonomous edge node management, and real‑world IoT and CDN use cases, illustrating how cloud‑native Kubernetes enables a unified edge infrastructure.
This article explains the concept, architecture, and operation of Content Delivery Networks (CDN), using logistics analogies to illustrate how edge nodes, global load balancing, and content routing improve web performance, reduce latency, and enhance reliability for various online services.
iQIYI’s CDN scheduling system was redesigned for dual‑stack IPv4/IPv6, adding Anycast DNS, IPv6‑aware probes, and hybrid CDN integration, while upgrading data‑center, backbone, and server configurations through automated SDN and management platforms, enabling over 100 million IPv6 users and gigabit‑scale traffic.
Tencent Cloud’s overseas video live‑streaming architecture combines tiered carrier procurement across North America, APAC and Europe, decentralized origin servers with dual‑active synchronization, and network optimizations such as DNS‑based scheduling, QUIC and QTCP, cutting stutter rates while tightly controlling costs.
This article presents a case study of an overseas user experiencing video upload failures due to international roaming, explains how Qunar's network detection tool (QunarNDT) was used to diagnose the issue, outlines the findings about domestic routing and timeout, and offers recommendations for improving user experience.
This article explains the HTTP Live Streaming (HLS) protocol, its standard playlist and segment structure, the latency challenges of traditional HLS, and details Apple’s low‑latency HLS draft with five technical improvements, demo implementation, and a comparison to Periscope’s LHLS approach.
The article explains how to build a poster‑rendering service with Puppeteer, detailing its advantages over canvas, the Redis‑based caching and CDN workflow, optimization tricks for headless Chromium, and future plans to boost QPS and pre‑generate popular posters.
The article traces website architecture evolution from a single‑server LAMP setup to distributed clusters, highlighting stages such as service separation, caching, load‑balanced application servers, read‑write database splitting, CDN/reverse proxy use, distributed storage, NoSQL/search integration, and finally SOA‑based business and service segmentation.
iQIYI built a three‑component CDN Inspection System that automatically generates tasks, centrally processes and analyzes results, and runs edge measurements to monitor millions of hybrid CDN servers in real time, detecting configuration errors, file mismatches and traffic anomalies, enabling proactive remediation and 100 % local coverage.
Live streaming platforms increasingly rely on CDN technology to handle sudden traffic spikes, improve latency and stability, and support various streaming protocols such as RTMP, HLS, and FLV, with a detailed workflow that shows how broadcasters, schedulers, and viewers interact through edge nodes.
This article explains why live streaming platforms rely on Content Delivery Networks, describes the CDN architecture and workflow, and compares the main streaming protocols—RTMP, HLS, and FLV—highlighting their characteristics and impact on latency and stability.
This article explains why video streams can still lag on high‑speed mobile networks, introduces the origin and principles of Content Delivery Networks (CDNs), and shows how CDNs reduce latency, improve user experience, and benefit both internet and telecom operators.
This article provides a beginner-friendly overview of traditional CDN components, their relationships, and a step‑by‑step download workflow, covering entry service, core indexing, core storage, content management, edge storage, and content distribution without delving into advanced features like grouping or P2P.
The article explains the concept of static/dynamic separation, compares deployment methods such as Nginx and CDN, discusses domain strategies, outlines its benefits and drawbacks, and presents an architecture suitable for high‑traffic static content delivery.
The article explains how 75CDN, a static resource CDN maintained by the 360 front‑end team, has added ES Module support, details browser compatibility, shows how to enable ESM on the platform, and provides practical code examples for importing modules in web projects.
This article revisits and updates a previous guide, replacing webpack3 with webpack4 and adding modern automation concepts, then systematically walks through network transmission, page rendering, and JavaScript blocking optimizations—covering caching, resource compression, sprite generation, GPU acceleration, and server‑side techniques like gzip, CDN, load balancing, and Node.js scaling.
This article outlines a layered architecture—including load balancing, CDN, caching, micro‑services, read/write separation and database clustering—to handle the massive data volume and high concurrency of modern e‑commerce platforms during peak events like Double‑11 and 618.
This article introduces three Tencent TEG sessions that reveal the automated operation systems behind massive storage and CDN services, billion‑level promotional event guarantees, and intelligent DCI network management, highlighting the challenges, solutions, and speaker expertise.
Tencent CDN’s implementation of HTTP/2 Server Push predicts and preloads dependent resources via link tags or headers, creates PUSH_PROMISE frames, and streams assets before the main response, yielding measurable latency reductions on real‑world pages when used with proper sizing, priority, and cache awareness, while avoiding slow‑start and buffer issues.
This article traces the progressive evolution of website architecture—from the early single‑server model through application‑data separation, caching, clustering, read‑write splitting, CDN deployment, distributed and NoSQL databases, and finally microservice architectures—illustrating each stage with diagrams and explaining the motivations behind each architectural upgrade.
At the China Video Consumption User Experience Summit, iQIYI detailed how its AI‑driven adaptive bitrate streaming, proprietary HCDN architecture, hotspot prediction and AI‑upscaling technologies collectively reduce stalling, shift traffic away from peak periods, and deliver higher‑quality, cost‑effective playback across devices, from standard video to 8K VR.
The article outlines how Tmall’s product‑detail service evolved through three architectural phases—system staticization, unified web caching, and CDN staticization—to handle Double‑11 traffic spikes with cost‑effective scalability, high availability, and improved performance.
Meitu cut short‑video CDN bandwidth by over 50 % while preserving quality, reduced error rates from 1 % to 0.1 %, and achieved millisecond‑level startup for most videos by deploying a data‑driven fusion scheduler, multi‑CDN failover, FastDNS, buffer control, moov‑relocation and player‑tuning techniques.
This article reviews how Tmall’s product‑detail and other browsing systems were transformed through static‑page generation, multi‑level caching, unified web cache layers and CDN deployment to handle Double‑11 traffic spikes while improving performance, availability, and cost efficiency.
This article chronicles a game company's operations team evolution over seven years, detailing how it grew from a tiny manual crew to a large, automated, cloud‑native organization that built its own CDN, monitoring, and platform solutions while tackling scaling, reliability, and service‑orientation challenges.
The guide details how a SaaS platform can transition to full‑site HTTPS by explaining the TLS handshake, inventorying static assets, domains and third‑party services, using protocol‑relative URLs, configuring redirects and CSP, testing securely, and addressing common migration challenges such as legacy references and external dependencies.
This guide explains how to create a personal CDN by deploying multiple edge servers, using Geo‑IP‑aware DNS routing, leveraging Amazon Route 53 latency‑based routing, synchronizing content, handling SSL with Let’s Encrypt, and evaluating performance across continents.
This guide explains why a custom CDN can outperform commercial services, walks through using geo‑aware DNS, BGP Anycast limitations, setting up edge servers, distributing static content, handling SSL certificates, and shares real‑world performance results and lessons learned.
This article explains what a flash‑sale (秒杀) is, outlines its technical challenges such as massive concurrency and database load, and presents practical strategies and architectural designs—including independent deployment, static pages, CDN bandwidth leasing, dynamic URL generation, and order‑handling mechanisms—to reliably support ultra‑high traffic spikes.
This article summarizes the origins, core principles, typical evolution stages, and common toolkits of large website architecture, highlighting how network growth, performance demands, and scalability challenges drive the adoption of caching, load balancing, database sharding, CDNs, and distributed services.
This article analyzes how Tencent Cloud CDN addresses the massive, unpredictable traffic spikes of popular mobile games like "Honor of Kings" by building a Tb‑level burst‑pool using Docker virtualization, enabling automated 10‑minute scaling, reducing costs, and maintaining high service quality.
This article explains the evolution of web front‑end development, introduces the concept of server‑side rendering (SSR) with Node, details practical implementation steps—including pure front‑end, Node‑based SSR, AJAX request merging, and build‑time code splitting—and shares lessons learned from applying these techniques in real projects.
This article explains the concept of server‑side direct output (Node direct output), its evolution from static pages to modern front‑end/back‑end separation, and provides a practical implementation using Node, webpack loaders, conditional compilation, and CDN asset management to accelerate page loads and improve SEO.
The article details a real‑world investigation of a surge of HTTP 406 errors on a Chinese e‑learning platform, tracing the issue to malformed Accept headers sent by a search‑engine crawler and illustrating how CDN routing and header negotiation can cause widespread client‑side failures.
This article reviews the evolution of the Internet and presents practical strategies for designing high‑concurrency, high‑traffic website architectures, covering mirror sites, CDN, layer‑4 switching, server and cache optimization, web server choices, database selection, and scaling and fault‑tolerance techniques.
To cope with a sudden, X5‑driven traffic surge that overwhelmed a migrated forum’s servers, the team enabled elastic scaling, redirected missing avatars with soft‑404 responses, off‑loaded avatar and post requests to a CDN, and created a pseudo‑static domain, allowing a single modest server to sustain massive loads.
This article explains the fundamentals of CDN, introduces QunarCache (CDN + Cache) architecture, compares cache solutions such as Squid, Varnish, ATS and Nginx, describes deployment patterns, operational monitoring, and future improvements for scalable, resilient content delivery.
This article breaks down the key factors affecting web server performance, from disk I/O and request handling to dynamic content processing, and presents a step‑by‑step optimization plan—including hardware upgrades, Nginx tuning, PHP caching, MySQL tweaks, and CDN deployment—to dramatically reduce page load times.
This article explains the fundamentals of video live streaming, covering terminology, bitrate, frames, key vs. non‑key frames, CDN caching strategies, and the end‑to‑end live streaming pipeline—including capture, preprocessing, encoding, pushing, transcoding, distribution, and playback—along with typical use‑case scenarios.
This article compiles a comprehensive checklist of front‑end performance techniques—ranging from reducing HTTP requests and using CDNs to caching Ajax, lazy loading, minimizing DOM size, avoiding redirects and iframes, and applying compression and caching headers—to help developers build faster, more responsive web pages.
This article details a cost‑effective hybrid DDoS/CC protection architecture that blends overseas traffic‑scrubbing services with domestic CDN and smart DNS, explaining the attack background, analysis, chosen solutions, implementation steps, and operational results.
This article explains how various web caching techniques—including browser, proxy, CDN, and storage APIs—work together through HTTP headers, expiration policies, and validation mechanisms to dramatically improve frontend load times and reduce bandwidth usage.
This article explains how Tencent CDN tackles ever‑growing Tb‑scale traffic spikes by virtualizing resources into a shared Docker‑based burst pool, detailing the challenges, architectural solutions, technical optimizations, and the resulting cost savings and rapid scaling capabilities.
This article explains the fundamentals of video streaming, media transcoding, and CDN technologies, then details Alibaba Cloud's live streaming architecture—including capture, preprocessing, encoding, push‑stream, transcoding, distribution, and client playback—along with business functions, monitoring, and typical application scenarios.
This article walks through practical techniques for speeding up web pages by compressing code, merging files, enabling gzip, leveraging CDN and caching, applying CSP for security, and using Webpack 2's tree‑shaking, providing code examples and configuration snippets for each step.
The article reviews the evolution of the video livestream industry, summarizing a July 29 51CTO‑hosted technical salon where experts from Momo Live, Hulu, Kingsoft Cloud, and GSX shared practical strategies on CDN probing, H.265 adoption, adaptive bitrate algorithms, and education‑focused streaming architecture to reduce costs and improve user experience.
During Alibaba’s Double‑11 shopping festivals, Tmall’s product‑detail and shop pages faced traffic spikes dozens of times higher than normal, prompting a multi‑stage architectural evolution—from early static‑page caching to unified web cache and finally full CDN staticization—delivering massive performance gains, high availability, and scalable cost‑effective solutions.
At Meitu’s fifth Internet Technology Salon in Xiamen, senior engineers from Meitu and Hulu detailed the company’s self‑built cloud live‑streaming stack, multi‑center optimization, DASH‑based high‑definition delivery, and the evolution of Meipai’s bullet‑screen architecture that now supports near‑million concurrent users, highlighting performance gains, cost control, and future intelligent dispatch strategies.
This article recounts Stack Overflow’s multi‑year migration to HTTPS, detailing technical hurdles such as handling hundreds of domains, certificate management, HTTP/2 performance, HAProxy configuration, CDN integration, and the operational practices that ensured a secure and high‑performance global platform.
The article explains how high‑concurrency systems can be built by decomposing workloads through optimistic locking, read‑write database splitting, resource separation with CDN acceleration, dynamic‑to‑static conversion, caching, and load‑balancing strategies, providing practical code examples for each technique.
This article details Tencent's large‑scale live streaming architecture for NBA games, covering the rapid growth of live video, key technical features, network transmission challenges, multi‑angle production, CDN deployment, monitoring, big‑data processing, and strategies for ensuring low latency and high reliability for millions of concurrent viewers.
This article explains how to host a simple front‑end project on Qiniu Cloud by uploading static files, obtaining public URLs, replacing local references, and accessing the index.html URL, while also outlining Qiniu's free tier and additional services.
This article explains how modern websites rely on HTTPS and CDN, details SSL/TLS and HTTP/2 fundamentals, describes Alibaba Cloud's CDN HTTPS architecture, dynamic certificate management, key‑server solutions, optimization techniques, and practical guidance for deploying HTTPS end‑to‑end.
This article explains what a CDN (Content Delivery Network) is, how it differs from traditional website access, outlines common application scenarios, and details the relationship and configuration of origin servers, origin hosts, and back‑origin settings.
This article explains the architecture of 360’s image hosting platform, detailing the Davinci upload pipeline and the Picasso download flow, the processing steps, caching layers, and the supporting infrastructure that enables billions of image requests daily.
This article explains how to improve service availability and optimal user routing by comparing traditional DNS‑based access with advanced techniques such as smart DNS, smart routing, CDN multi‑point access, and global server load balancing (GSLB), highlighting their advantages, drawbacks, and practical deployment considerations.
This article dissects YouTube's massive infrastructure, detailing the basic platform, web and video services, thumbnail handling, database evolution, CDN usage, and data‑center strategies that enable over half a billion daily video clicks with a surprisingly small engineering team.
