The article explains the unique challenges of monitoring and alerting in large‑scale big‑data environments, outlines the evolution and architecture of such systems, and provides detailed guidance on data collection, time‑series storage, rule definition, and alert actions for reliable operations.
This article supplements the earlier 'Architecture Design Principles' piece by presenting a company internal training that explains architecture concepts, forms, and design principles, and provides a link to the accompanying PPT slides for further study.
This article explains why asynchronous processing is needed for large‑scale file export and import, outlines typical use cases, compares its pros and cons, and provides a detailed backend architecture, API design, and implementation guidelines with code snippets and diagrams.
At the QCon 2023 Beijing conference, Lianjia's big‑data architect Li Xiaolong presented a comprehensive overview of the company's data platform, detailing its data taxonomy, application scenarios, multi‑layer architecture, and future roadmap for creating a data‑driven real‑estate service ecosystem.
This article explains how to define high availability for Redis, enumerates typical failure scenarios, compares four deployment patterns—from a single instance to a three‑sentinel setup—and provides practical steps, diagrams, and tips for achieving reliable Redis service using Sentinel and virtual IP failover.
This article from the 360 Qihu operations team explains Kubernetes' architecture, core components, and the three‑step registration‑watch‑action process, while also detailing custom load‑balancer and log‑collection controllers they built for HULK deployments, offering insights for developers and operators.
The article details Alipay’s comprehensive architecture for the Double 11 shopping festival, covering its three‑layer IAAS/PAAS/SAAS model, logical data‑center design, multi‑active disaster‑recovery, blue‑green deployment, distributed data sharding, transaction processing, and the Ant Credit Pay service’s performance and risk‑control mechanisms.
This article presents a visual summary of the Alibaba Java Development Handbook, covering programming conventions, exception logging, unit testing, security guidelines, MySQL usage, and project structure to help developers quickly recall essential backend Java practices.
This article provides a comprehensive introduction to blockchain technology, covering its origins, development milestones, formal definition, structural classifications, key characteristics such as decentralization and immutability, as well as security mechanisms and current limitations, supported by references and illustrative diagrams.
Serverless computing, the latest cloud paradigm merging microservices and serverless architectures, evolves from on‑premise monoliths through SOA and containers, offering rapid deployment, cost efficiency, and scalability, while also presenting challenges such as vendor lock‑in, complexity, limited long‑running tasks, and security considerations.
This article explains why monolithic applications become unmanageable as they grow, outlines the advantages of breaking them into independent microservices, and discusses the architectural, operational, and testing challenges that accompany a microservice‑based design.
This article explains the fundamentals of microservices architecture, contrasting it with monolithic systems, and covers design principles, messaging patterns, integration methods, API‑gateway usage, and data decentralization to help developers build scalable, maintainable backend services.
This article explores how to design a high‑performance, highly available, and scalable e‑commerce platform by separating business and technical architectures, detailing subsystem decomposition, scaling strategies, and the evolution from simple single‑server setups to distributed, clustered solutions.
The 8th Meitu Internet Technology Salon in Shenzhen showcased four expert talks covering Meipai’s high‑concurrency prop‑trading system, a comprehensive monitoring platform, the evolution of Meitu’s IM architecture, and live‑streaming optimization, revealing how the company supports over 1.5 billion users with robust backend engineering.
This article explains how to design and build a lightweight Java web crawler framework, covering crawler fundamentals, anti‑scraping challenges, core components such as URL manager, scheduler, downloader, parser and pipeline, and provides concrete code examples and architectural diagrams.
This article surveys the technical architectures of major web platforms—including Wikipedia, Facebook, Yahoo! Mail, Twitter, Google App Engine, Amazon, and Youku—highlighting their design patterns, scaling techniques, storage solutions, and caching strategies to reveal how massive online services are built and operated.
The article reflects on the evolution of front‑end technology from early HTML/CSS/JS to Node‑based BFF architectures, discusses the convergence of front‑end with mobile, IoT and design, and outlines future directions such as TWA, UI intelligence, data visualization, and immersive experience technology.
Facing over 60 million daily users and 100 K QPS, iQIYI’s Bubble platform migrated from a monolithic codebase to a business‑driven microservice architecture—splitting services by entity and function, adopting the internal RPCHUB RPC framework, establishing ownership, fault‑tolerance, monitoring and CI/CD pipelines, and addressing scaling challenges to sustain rapid growth.
This article chronicles Bilibili’s transition from a traditional MVC workflow to a modern front‑end/back‑end separation, detailing the adoption of Node middle‑layers, Vue SSR, architecture refactoring, deployment strategies, performance testing, and lessons learned throughout 2017.
This article breaks down Tomcat’s modular architecture, explaining the roles and interactions of Server, Service, Connector, and Container components, and illustrates how requests flow through the system using detailed diagrams and a step‑by‑step analysis of the underlying pipelines.
The talk presented at the Global Architect Summit detailed JD Daojia's backend architecture evolution, covering physical deployment, microservice adoption, gateway design, LBS caching, order system structure, idempotency, data consistency, high‑availability strategies, gray releases, rate limiting, and stress testing, illustrating practical engineering challenges and solutions.
Alibaba’s UED outsourcing platform integrates AI-driven image verification, DDD‑based architecture, CQRS, and API interfaces to streamline design task distribution, real‑time budgeting, automated settlement, and quality assessment, enabling efficient, controllable, and intelligent management of over 700 external designers across the group.
This article describes how WiFi 万能钥匙 designed and implemented the Roma monitoring platform to handle billions of daily requests, covering background challenges, architectural principles, component design, data collection, transmission, storage, alerting, and future directions for large‑scale observability.
This article details the business scope, challenges, architectural evolution, and practical solutions of Suning's inventory system—including front‑mid‑back separation, self‑developed high‑concurrency services, unitization, multi‑active deployment, and pre‑Double 11 capacity planning—to ensure stable, scalable e‑commerce operations during massive traffic spikes.
This article presents a comprehensive case study of building a front‑end business framework for a mobile e‑commerce app, covering the initial design thinking, technical selection, architecture (infrastructure, router, MVC), componentization, hybrid performance optimizations, server‑side rendering, SPA‑React integration, Redux usage, and the engineering workflow including automation, testing, and continuous integration.
The author, a mobile development team leader, shares a detailed account of a recent iOS codebase refactoring, describing the removal of unused libraries and code, architectural improvements, memory‑leak fixes, and best‑practice guidelines such as avoiding singletons, unnecessary layers, and over‑reliance on third‑party frameworks.
This article explains why the Suning+ Android app adopted the MVP pattern, details each layer's responsibilities, showcases the project’s multi‑layer structure, directory layout, and code snippets, and demonstrates how MVP reduces coupling and accelerates iterative development.
This article explains how to use the Model‑View‑Presenter (MVP) pattern in Android to reduce module coupling, prevent memory leaks with WeakReference, and organize code into clear layers—View, Presenter, Model, and a Data Manager—while providing step‑by‑step implementations and reusable base classes.
This article outlines the historical evolution of application architecture—from early vertical monolithic designs through RPC and SOA approaches to modern microservice architectures—highlighting their characteristics, deployment models, and the motivations behind each transition.
This article explains Kafka's origins, design goals, core architecture, message routing, consumer groups, push‑vs‑pull semantics, and delivery guarantees, while comparing it with other popular message‑queue systems to show why it is widely adopted in modern data pipelines.
This article explains the concepts of vertical (monolithic) and horizontal (distributed) architectures, compares onion, SOA, and microservice models, describes typical frameworks for data access, MVC, IoC, and service governance, and provides guidance on choosing the appropriate architecture for different project sizes and teams.
This article explains microservice architecture fundamentals, typical design patterns such as chain, aggregator, data‑sharing and asynchronous messaging, and presents practical solutions for service splitting, data consistency, and distributed transaction management based on real‑world experience at the ZhaiZhai platform.
Chief architect at Hulu shares a high‑level overview of the company’s tech ecosystem, detailing its microservice‑based backend on the Donki PaaS, cloud‑flexible deployments, extensive machine‑learning pipelines, VOD and live‑streaming services, multilingual codebases, and the operational challenges of scaling a global streaming platform.
This article outlines essential high‑concurrency and high‑availability principles—including stateless design, service decomposition, caching strategies, message queues, data heterogeneity, degradation, rate limiting, traffic switching, and rollback mechanisms—to help architects build scalable, reliable, and resilient systems.
This article outlines Taobao's learning objectives, traces the evolution of its backend architecture from V1.0 to V3.0, highlights the technical challenges faced at each stage, and explains the architectural decisions—such as modularization, service‑oriented frameworks, distributed storage, and large‑scale monitoring—that enabled massive scalability, reliability, and performance improvements.
This article traces the evolution of front‑end development from the early Web 1.0 era through the Ajax‑driven “first spring,” examining the rise of MVC, MVP, MVVM, and Flux/Redux patterns, and explains how each architectural shift addressed the growing complexity and maintainability challenges of modern web applications.
This article traces the historical evolution of front‑end development, examining early Web 1.0 JSP/ASP architectures, the rise of AJAX, and the progression through MVC, MVP, MVVM, and Flux/Redux patterns, highlighting their benefits, drawbacks, and impact on modern front‑end engineering.
This article explains the evolution of microservices, their architectural concepts, advantages such as smaller size, faster delivery, stronger resilience, and how they relate to cloud, DevOps, and operational practices, providing a solid foundation for building and evaluating microservice applications.
This article introduces JD's Aura component framework, detailing its origins, four foundational pillars, three supporting systems, key tools, SDK specifications, and the associated portal, CI, and management platforms that enable scalable Android componentization within the Avatar ecosystem.
This article explores applying big‑data thinking and platforms—such as Flume, Spark Streaming, and HBase—to operations monitoring, detailing data sources, metric categories, architecture design, implementation steps, and the benefits of a scalable, low‑code monitoring platform.
This article presents a comprehensive collection of technical knowledge maps compiled over years, covering architecture, Java, microservices, consistency, big data, cloud computing, mobile development, front‑end, back‑end, DevOps, and more, aiming to help engineers and architects master essential skills and best practices.
The article offers a clear, beginner‑friendly overview of Kubernetes architecture—including master‑slave roles, key components like etcd and kube‑apiserver, the registration‑watch workflow, and custom controllers such as lb‑controller and log‑controller—while inviting readers to share feedback and explore deeper implementation details.
Facebook’s architecture, built on a LAMP‑style foundation yet vastly scaled, relies on technologies such as Memcached, HipHop for PHP, Haystack, BigPipe, Cassandra, Scribe, Hadoop, Hive, Thrift, and Varnish, alongside progressive deployment strategies like Gatekeeper, to handle billions of daily requests and petabytes of data.
The article outlines a comprehensive front‑end architecture for an internet‑finance development team, detailing how component‑based, configuration‑driven design, migration from PHP to Node, and shared services (FMS, AXE, SCENE) address frequent scenario changes, risk‑control requirements, and aim to boost development efficiency and product management capability.
This article traces Alibaba's e‑commerce platform evolution from a simple LAMP stack through Java migration, distributed caching, custom middleware, and multi‑active global deployment, highlighting the technical challenges, solutions like HSF RPC, TDDL sharding, and the high‑availability practices that now power Alibaba Cloud services.
This article provides a comprehensive overview of microservice architecture, covering its definition, historical development, differences from monolithic systems, core characteristics, comparison with SOA, practical implementation concerns such as API gateways, communication, service discovery, fault tolerance, common design patterns, advantages, challenges, and a mindset shift required for successful adoption.
This article introduces Apache Kafka as a fast, scalable distributed publish‑subscribe system, explains its core components, Zookeeper coordination, startup workflow, key features, and common scenarios such as log collection, activity tracking, and stream processing.
This article traces the evolution of game server architectures across seven types, from early weak‑interaction HTTP servers and the first MUD systems to modern seamless, dynamically balanced, and P2P‑enabled back‑ends, highlighting design choices, scalability challenges, and practical implementation details.
This guide explains why an iOS app may be rejected for IPv6 incompatibility, how to set up a local IPv6 test environment with two iPhones and a Mac, troubleshoot network bugs, update the Reachability library, and strip unsupported architectures from frameworks to resolve App Store upload errors.
This article chronicles Ctrip's multi‑year architectural evolution—covering operations, framework, application layers, publishing system, configuration management, SOA, and the large‑scale UserProfile project—highlighting the motivations, challenges, and solutions that shaped its high‑availability, high‑performance platform.
The article reviews the evolution of big‑data architectures from a simple RDB‑centric pipeline to a SaaS‑based solution, highlighting common bottlenecks such as scaling, integration, cost, and operational complexity, and shares practical experiences and best‑practice recommendations for building efficient, maintainable data platforms.
The CCF TF Architecture SIG hosted a densely attended microservices practice seminar in Beijing, featuring leading experts from 25 top tech companies who shared deep insights on service discovery, high‑availability architectures, Spring Cloud adoption, and large‑scale microservice frameworks such as Vintage, OCTO, and rest.li.
The article chronicles Youzan's transition from a monolithic PHP system to Java‑based microservices, outlines the architectural challenges encountered, and presents practical solutions such as Spring Boot adoption, BOM management, health‑check standardization, Hystrix circuit‑breaker patterns, automated API documentation, contract testing, and continuous integration to improve scalability, maintainability, and operational efficiency.
This article outlines the development of Tencent Cloud Block Service, describing the transition from the monolithic CBS1.0 through the streamlined CBS2.0 to the two‑layer CBS3.0 architecture, and discusses the design choices, operational challenges, performance optimizations, and industry comparison with Ceph.
This article details JD.com's front‑end architecture for its homepage, covering the challenges of massive DOM growth, static page generation via CDN, layered page loading strategies, disaster‑recovery measures, performance optimizations, and the JDF engineering toolchain that enables modular development, automated builds, and efficient deployment in a high‑traffic e‑commerce environment.
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 presents a curated list of essential Java books covering JVM internals, HotSpot, concurrency, multithreading, effective coding practices, web technologies, large‑scale site architecture, middleware, distributed consistency, MySQL, and deep Spring source analysis, offering guidance for developers seeking to deepen their backend expertise.
This article explores how applying a Lego‑like page‑structuring approach to Android MVP can improve decoupling, reduce method count, and enhance maintainability, while comparing its benefits and drawbacks against traditional MVP implementations.
This article explains how Lianjia designed and implemented LTrace, a zero‑intrusion, high‑performance distributed tracing system that captures full request chains across heterogeneous services, supports multi‑language environments, offers flexible sampling, and enables rapid fault isolation and performance optimization.
This article consolidates e‑commerce platform architecture practices, covering design principles, multi‑level caching, indexing strategies, parallel and distributed computing, high availability, scaling techniques, resource optimization, static blueprint, component analysis, and supporting middleware such as load balancers, routers, HA, messaging, caching, buffering, search, and log collection.
This article reviews Ctrip's two‑year architecture transformation, describing the limitations of the legacy Croller release system, the design of a new group‑based configuration model, the introduction of seven‑layer load balancing and the TARS deployment platform, and detailing the implementation of a unified configuration management system (CMS) to improve operational efficiency and reliability.
This article compiles an extensive collection of architecture knowledge maps and a detailed overview of DevOps tools, categorizing them by development, deployment, and maintenance functions while also presenting related big‑data and cloud‑computing skill maps for engineers seeking a holistic view of modern software infrastructure.
This article outlines the principles and components of a scalable game server architecture, covering login management, region selection, gateway handling, communication protocols, publish‑subscribe, RPC, server merging, and the evolution from single‑threaded to cloud‑native designs.
This article outlines six essential design principles—architecture independence, deployment friendliness, operability, fault tolerance, quality monitoring, and performance cost—that help engineers build microservice systems that are efficient, reliable, and easy for operations teams to manage.
This article outlines Ctrip’s evolving architecture—covering its operational backbone, framework components, release system, configuration management, SOA evolution, and the massive UserProfile big‑data platform—offering practical insights from a senior developer on how the company achieves high availability and scalability.
This article chronicles the evolution of WeChat's Android architecture from a simple layered design through multi‑process and modular restructurings, explains why a major refactor was needed, and details the new communication, module, and code‑boundary strategies that enable faster development, better isolation, and a lightweight WeChat nano demo.
This article explains how microservices evolved from SOA as a fine‑grained implementation, compares their concepts, benefits, and drawbacks, and provides practical guidance for choosing architectures, communication protocols, and frameworks—especially in Java‑based systems.
This article explains the differences between libraries and frameworks, outlines common front‑end solution categories such as DOM manipulation, communication, utilities, templating, components, routing and architecture, and provides practical recommendations of popular JavaScript tools for each area.
This article offers a practical, non‑technical overview of the differences between Service‑Oriented Architecture (SOA) and Microservice Architecture (MSA), discussing concepts such as ESB, service granularity, communication protocols, complexity, maintainability, high‑concurrency handling, and Java framework choices for building robust systems.
This article explains why architecture practice is essential, introduces the concept of unit (cell) architecture, discusses its performance and cost advantages, and details how Weibo applied it to its fan service platform, including handling of partitioning and job management.
After leaving Baidu in 2015, the author recounts nearly two years of evolving a startup’s backend architecture—from a single‑server Tomcat setup to multi‑node clusters with Nginx reverse proxy, database sharding, caching, session sharing, and service‑oriented design—highlighting challenges, optimizations, and lessons learned.
The article examines the rise of microservices, outlines their key characteristics, recounts a company's painful transition from a monolithic Tomcat‑based architecture to a decentralized microservice ecosystem, and shares the practical challenges and pitfalls encountered during the migration.
The article discusses a systematic .NET application architecture that separates the presentation, business, and data layers, explains UI and controller responsibilities, compares data‑transfer and domain models, and reviews various data‑access strategies such as ADO.NET, ORM, and DataMapper to achieve maintainable, extensible software.
This article provides a comprehensive overview of SAP HANA, covering its purpose as an in‑memory database platform, key architectural components, various deployment options such as appliances and TDI, and typical application scenarios ranging from OLAP analytics to OLTP workloads.
This article presents a comprehensive redesign of Baidu Waimai’s client‑side activity module, detailing background challenges, design goals, functional and performance specifications, trade‑off analyses of three architectural alternatives, and the chosen parallel HTTP‑request solution with monitoring, degradation, and phased rollout plans.
This article provides a comprehensive overview of large‑scale website architecture, covering key metrics, evolutionary stages, core design patterns, performance testing, high‑availability strategies, scalability techniques, and security measures essential for building and operating robust web systems.
This comprehensive guide presents Uber engineering leader Raffi Krikorian's twelve practical rules for planning, executing, and managing architecture refactoring, covering purpose definition, incremental approaches, data handling, technical debt, team readiness, and non‑technical influences.
This article presents a curated list of essential Java books ranging from beginner fundamentals and agile testing to advanced architecture, software development processes, and project management, offering download links and concise commentary to help Java developers systematically improve their skills.
This article presents a detailed analysis of the evolution from MVC to MVP in Android hotel‑business development, illustrates common pitfalls such as bloated controllers and context loss, introduces Ctrip's extended MVCPI pattern with weakly‑typed IView, Presenter and Interactor components, and provides concrete code examples for each architecture.
The author recounts his nine‑year journey at Alibaba, detailing four career stages, the evolution of front‑end architecture for B‑class e‑commerce, internationalization challenges, team‑management insights, and practical advice for front‑end engineers seeking growth and resilience.
This article explains how distributed file systems overcome the limitations of traditional local file systems by using a master‑metadata server, multiple data nodes, and client interfaces, and it details the key architectural components, common problems, and practical engineering solutions such as replication, load balancing, and caching.
This article chronicles the development of our hybrid mobile technology from its 2014 inception, detailing the architectural decisions, bridgeJS integration, multi‑platform "N‑in‑1" strategy, tooling choices, performance optimizations, and future directions for efficient cross‑platform mobile app delivery.
This article explains how to design a payment system by covering product classification, module functions, business processes, and reference architectures, illustrating the role of microservice proxies, risk assessment, and integration with popular platforms like Alipay, WeChat Pay, and PayPal.
Li Qiang, Operations Director at TianpiaoChe, shares the step‑by‑step transformation of a legacy e‑commerce infrastructure, covering network latency fixes, hardware re‑allocation, OS tuning, open‑source component upgrades, virtualization changes, and future plans, providing practical insights for large‑scale site operations.
This guide walks through the evolution of a small .NET‑based e‑commerce system, covering its initial LAMP‑style setup, detailed backend architecture, logging and monitoring solutions, master‑slave database design, shared‑storage image server, mobile M‑site construction, capacity estimation methods, and caching strategies.
This article presents a comprehensive methodology for reviewing internet‑scale system architectures, focusing on non‑functional quality attributes such as performance, availability, scalability, security, and maintainability, and provides detailed guidelines, metrics tables, and a classic case study for capacity and performance planning.
The article explains microservice architecture as a set of small, independently deployable services communicating via lightweight protocols, contrasts it with monolithic applications, and discusses its benefits, challenges, organizational impact, and common integration patterns such as REST, messaging buses, and service boundaries.
The article outlines Meituan‑Dianping’s tourism recommendation system, detailing its evolution from simple hot‑sale recall to sophisticated decay‑based, GPS‑aware, collaborative filtering and XGBoost reranking pipelines, the four‑layer architecture supporting dozens of travel scenarios, and future plans to broaden recall, adopt deep models, and expand multimodal travel recommendations.
This article introduces the concept of isomorphic JavaScript, distinguishes content‑ and form‑isomorphism, explains the layered spectrum of isomorphism, outlines its practical benefits for SEO, performance and maintainability, and details the IMVC framework design, controller pattern, simplified Redux (relite), and engineering tooling for modern front‑end development.
The article recounts a recent team restructuring that shifted NodeJS from pure backend development to a broader "big wireless" strategy, introduced large‑scale React Native adoption, created a dedicated architecture group, and shares practical lessons on aligning technology choices with business value.
This article outlines the rapid growth of Baidu Takeaway's operations backend, analyzes the limitations of the FIS‑based modular approach, describes the transition to React‑Redux componentization, and presents a third‑generation, model‑driven component sharing platform designed to reduce repetitive development and improve developer happiness.
This article chronicles the step‑by‑step evolution of a LNMP‑based website, detailing how increasing traffic drove architectural changes such as separating web and database servers, adding memcached, implementing MySQL master‑slave replication, load balancing, NFS sharing, and finally integrating NoSQL caching to handle millions of daily visits.
This article explains why product operation and marketing are essential skills for architects, describing how the rise of mobile internet, big data, and cloud computing creates new platforms for product lifecycle management, and urging engineers to integrate market analysis into design and planning.
The article outlines twenty‑five practical principles for becoming an excellent software model designer, emphasizing the importance of people over technology, thorough requirement analysis, humility, low coupling, high cohesion, portability, scalability, performance, proper documentation, and continuous learning to build robust, maintainable systems.
Mt‑Falcon, Meituan’s re‑engineered successor to Zabbix, introduces a modular architecture—Agent, Transfer, HBS, Judge, Graph, Alarm, Portal—and extensive refactorings that boost memory efficiency, asynchronous data handling, multi‑condition alerts, and API exposure, enabling over one million QPS, 200 million metrics, and robust, scalable monitoring across the company.
This article outlines a cost‑effective, scalable backend architecture built on Alibaba Cloud services—including VPC, RDS, ECS, OSS, and security measures—to support the early stages of a mobile and web application and to enable gradual performance upgrades as traffic grows.
The article outlines how a Discuz website’s MySQL infrastructure progresses through five stages—from a single‑machine setup for low traffic to multi‑master, read‑write split, and finally sharding and partitioning—to handle daily page views growing from under ten thousand to ten million.
This article examines YouTube's large‑scale architecture, detailing its platform components, web and video services, database evolution, data‑center strategy, and key lessons for building high‑concurrency, fault‑tolerant backend systems.
This article examines why long‑running software projects experience architectural decay, the limitations of new frameworks, and presents practical solutions such as environment upgrades, phased and distributed builds, refactoring into isolated components, and adopting modular, loosely‑coupled platform‑plus‑application designs to sustain development productivity.
This article examines common misconceptions and pitfalls of front‑end/back‑end separation, explains why proper preparation and clear API design are essential, and outlines practical steps—from project planning to testing and deployment—to implement a successful separation strategy in modern web development.
