This article explains the purpose and definition of software architecture, categorizes different architecture diagrams, introduces the 4+1 and C4 view models, and provides practical guidance on drawing clear, audience‑focused architecture diagrams that align with code and system design.
This article summarizes the most commonly used architecture diagram types, provides template examples, and outlines their characteristics, typical use cases, visual appeal, and complexity to help developers quickly create diagrams that match business requirements.
This article explores architecture fundamentals, covering business architecture methodology, system architecture evolution from monolith to microservices, and technical strategies for reliability, scalability, performance, maintainability, security, and cost reduction, concluding with expression methods like the 4+1 view.
The article systematically defines software architecture, distinguishes systems, subsystems, modules, and components, compares frameworks with architectures, explores TOGAF and RUP classifications, traces the evolution from monoliths to micro‑services, and presents concrete design principles and common pitfalls for building scalable, maintainable systems.
This guide compiles the most commonly used architecture diagram types, explains their key characteristics, ideal use cases, visual appeal, and complexity, and offers ready‑to‑use templates so developers can swiftly produce clear, business‑aligned diagrams.
A Tencent architect explains that effective software architecture requires clear distinctions between systems, subsystems, modules and components, understanding frameworks versus structural design, applying TOGAF classifications, evolving from monoliths to microservices, and following fifteen practical principles while avoiding common misconceptions such as over‑design and technology‑driven choices.
The article explains why testing teams need systematic public resource management, outlines the challenges of resource flow, asset control, and security, and details the evolution from a simple approval pipeline (v1.0) to a more autonomous, domain‑aware system (v2.0) with practical solutions.
This article reflects on years of designing large‑scale backend systems at Tencent, discussing how to define clear architecture boundaries, ensure high availability, integrate diverse technologies, and use observability and monitoring to continuously evolve and improve massive service architectures.
The article presents a comprehensive design and implementation of a unified push notification platform that abstracts variable configurations, systematizes immutable logic, and employs asynchronous processing, sharding, rate limiting, and resource allocation strategies to achieve scalable, reliable, and maintainable multi‑business push services.
This article examines how JD Logistics’ Contract Center manages millions of daily contract queries by analyzing call patterns, identifying high rates of empty results, and implementing a three‑layer protection strategy using Bloom filters, Redis caching, and database safeguards to ensure high‑availability and data consistency.
This article explains the architectural mindset behind high concurrency, defines key performance metrics such as TPS, RPS, RT and VU, analyzes test results, and presents practical techniques like rate limiting, frequency limiting, degradation and caching to balance performance, availability, and resource usage.
The article shares the author’s years of architecture experience at Alipay, arguing that growth into a true architect is a cognitive upgrade, explains what architectural ability really means, illustrates it with a multithreading interview example, and presents systematic thinking methods and practical steps for building architectural competence.
The article examines how applying the open‑closed principle and domain‑driven design in software architecture can lower programmers' cognitive load, streamline development, and enable cost‑effective, scalable evolution of complex systems, especially in fast‑iteration internet services.
This article explains how large hotel‑booking platforms such as Airbnb, Booking.com and OYO use a micro‑service architecture—including hotel management, customer search/booking, and view‑booking services—combined with load balancers, Kafka, Elasticsearch, Redis, Cassandra and Hadoop to achieve a seamless, high‑throughput booking flow.
This article outlines the essential design principles, client optimizations, CDN usage, clustering, caching, database tuning, and service governance techniques needed to create robust high‑traffic, high‑concurrency systems that scale reliably and maintain performance.
This comprehensive guide clarifies the concept of software architecture, explores related notions such as systems, subsystems, modules, components, frameworks, and various architectural classifications, and outlines design goals, evolution paths, common pitfalls, and recommended reading for building effective, scalable, and maintainable systems.
This article outlines the essential principles, architectural patterns, client optimizations, CDN usage, clustering, caching strategies, database tuning, and service governance techniques required to design, build, and maintain high‑traffic, high‑concurrency backend systems effectively.
The article explores how an architect’s cognitive upgrade—through systematic thinking, model-driven analysis, and practical design methods—drives effective system architecture, business modeling, and trade‑off decisions, illustrated by a multithreading interview example and a suite of methodological tools.
The article examines why a distributed configuration system is needed, outlines its constraints, traces its evolution from single‑machine files to centralized and database‑backed stores, and presents WeChat’s design—key‑object protobuf model, secure SDK, asynchronous pull loading, versioned consistency, and gray‑release support—demonstrating a two‑year case study that cut configuration rollout time from days to minutes.
This article outlines the essential design principles, client‑side optimizations, CDN usage, clustering, caching, database tuning, and service governance techniques required to build and maintain high‑traffic, high‑concurrency backend systems that are reliable, scalable, and performant.
This guide walks developers through the essential design principles, client‑side optimizations, CDN usage, clustering, caching, database tuning, and service‑governance techniques needed to build robust high‑traffic, high‑concurrency applications.
This article describes the background, design goals, core technical solution, versioned implementation process, and performance improvements of a real‑time final‑price calculation module that integrates product price, coupons, and promotions to deliver up‑to‑date pricing for e‑commerce users.
This article explores the comprehensive architecture of modern payment systems, detailing the interaction between transaction and payment cores, system components such as gateways, accounting, service governance, data consistency, async processing, and practical performance and stability practices used in large‑scale financial platforms.
Vivo’s e‑commerce inventory system evolved from a monolithic design into a multi‑layered service architecture that separates warehouse, scheduling, and sales layers, introduces distinct stock types, implements deduplication, anti‑oversell, high‑concurrency and hotspot mitigation strategies, and integrates sync mechanisms with warehouses and product systems.
This article explains the concept of software architecture, distinguishes it from frameworks, outlines its components, design objectives, classification methods such as RUP 4+1 and TOGAF, evolution from monoliths to micro‑services, evaluation criteria, typical misconceptions, and recommends essential reading for architects.
This article outlines the essential design principles, client‑side optimizations, CDN usage, clustering, caching, database tuning, and service governance techniques required to build robust, high‑traffic, high‑concurrency backend systems.
The ZZ Business Check Platform (ZZBCP) is a backend system designed to detect and correct real‑time data anomalies across complex C2C, C2B, B2B, B2C, and C2B2C transaction flows by integrating message subscription, rule execution, alerting, automatic repair, and monitoring modules.
The article shares a senior engineer’s reflections on technical architecture at Alibaba, covering top‑level design, physical and application architecture, the evolving role of architects, essential problem‑solving skills, the need for a global perspective, broad technical breadth, continuous learning, and how these insights shape effective R&D management.
This article explains the purpose and classification of software architecture diagrams, introduces the 4+1 and C4 view models, describes business, application, technical, and data architectures, and provides practical guidance on drawing clear, audience‑focused diagrams that accurately reflect system design.
This article explains the definition and essence of software architecture, outlines its layers and classifications, describes architectural levels and the evolution from monolithic to micro‑service designs, and discusses how to evaluate architectural rationality while highlighting typical misconceptions and best‑practice guidelines.
The article outlines essential high‑availability techniques for internet‑scale systems, covering availability metrics, microservice modularization, database redundancy, load balancing, rate limiting, circuit breaking, isolation, retry strategies, rollback plans, stress testing, monitoring, and on‑call procedures.
This article outlines a step‑by‑step asynchronous processing pattern—including request reception, backend handling, exception retry, failure compensation, and alerting—to prioritize functional improvements and quickly enhance system performance while aligning technical actions with business goals.
This article explains the definitions and differences of QPS and TPS, describes concurrency and throughput concepts, introduces related metrics such as PV, UV, DAU, MAU, and outlines key considerations for system performance testing and capacity planning.
This article outlines fifteen practical techniques—including horizontal scaling, microservice decomposition, database sharding, connection pooling, caching, CDN, message queues, Elasticsearch, circuit breaking, rate limiting, and load testing—to help engineers build robust, high‑concurrency systems that can handle massive traffic spikes.
The article examines backlog, abnormal and over‑consumption problems in a small court’s task distribution, proposes an active‑claim model with user‑task lock queues to decouple qualification checks, and shows that these changes raise completion to 100%, cut processing time from 20 hours to under 2 hours while recommending a factory‑plus‑strategy architecture for future extensibility.
This article explains what a software architect does, outlines the three architectural levels (application, solution, enterprise), describes the architect’s daily responsibilities, and details ten essential skills—including design, decision‑making, simplification, programming, documentation, communication, estimation, balancing, consulting, and market awareness—required for a successful career in software architecture.
This article walks through the evolution of a user system—from a basic email/phone login to third‑party OAuth, multi‑type user accounts, diversified password schemes, and real‑person (entity) verification—showcasing a flexible, extensible backend design that can handle rapid business growth.
This guide outlines how to prepare for technical interviews by reviewing algorithms, core computer science fundamentals, essential backend technologies such as MySQL, Redis, and Docker, and provides a collection of real interview questions and tips for each interview round.
This article outlines fifteen practical techniques—including horizontal scaling, microservice decomposition, database sharding, connection pooling, caching, CDN, message queues, circuit breaking, rate limiting, and load testing—to help engineers design backend systems that remain reliable and performant under extreme traffic spikes.
When joining a new project, understanding its software design by first examining the model, then the interface, and finally the implementation helps avoid getting lost in code, clarifies design decisions, and builds a clear mental map of the system.
This article explains the purpose, architecture, modules, and detailed design steps of a payment reconciliation system, covering internal and channel reconciliation, data acquisition, file parsing, storage, transaction matching, error handling, and settlement processes for robust backend payment operations.
This article breaks down the essential design and operational considerations for achieving high availability across six layers—development standards, application services, storage, product strategy, operations deployment, and incident response—providing concrete practices, metrics, and safeguards to reach four‑nine (99.99%) uptime.
This article explains product architecture as the skeleton of a product, outlines a step‑by‑step design process from business overview to detailed UI considerations, and lists the typical deliverables such as business flow diagrams, product maps, functional charts, and prototype or PRD documents.
This article explains the essence of software architecture, its definitions, hierarchical layers, classification, architectural levels, strategic versus tactical design, evolution from monolithic to micro‑service systems, criteria for evaluating architectural soundness, and typical misconceptions that developers should avoid.
This article provides a detailed introduction to software architecture, covering its definition, essential concepts such as systems, subsystems, modules, components, and frameworks, various architectural layers and classifications, evolution from monolithic to micro‑service designs, common pitfalls, evaluation criteria, and recommended learning resources.
This article outlines a cost‑effective IM architecture optimization, detailing a four‑layer design, separation of third‑party services, message reception strategies for online, offline and historical data, unified distribution management, data‑exception handling, and key performance metrics to guide robust instant‑messaging implementations.
This article explains how a large‑scale internet‑finance payment system integrates dozens of channels and products, employs decision‑tree routing, sliding‑window feedback, adaptive pressure detection, and Redis fallback for RabbitMQ to achieve high availability, low latency, and robust handling of millions of daily transactions.
This article provides a thorough overview of backend development, covering system design principles such as high cohesion and low coupling, architectural patterns for high concurrency and availability, network communication techniques, common fault scenarios, monitoring and alerting strategies, service governance practices, and deployment workflows.
This article systematically explores high‑availability system design from development standards, capacity planning, application services, storage, product strategies, operations deployment, to incident response, presenting key concepts, architectural patterns, and practical guidelines for building resilient services.
This article systematically explores the challenges of microservice service splitting—from technical choices and architectural reliability to business model validation and team collaboration—offering static and dynamic solutions, design principles, and practical guidelines for effective service decomposition.
The article examines why engineers favor reuse, outlines the logical arguments that link reuse to productivity, exposes common misconceptions and hidden costs, and proposes autonomy and consistency metrics as practical criteria for deciding when and how to abstract shared components in software systems.
This article examines the technical challenges of B‑end contract advertising systems, tracing the evolution of Baidu's ad‑placement platform from a monolithic architecture through multiple business stages to a domain‑driven microservices design, and discusses service governance, observability, anti‑corruption, and iterative development practices.
This article provides a comprehensive overview of payment system architecture, describing the transaction and payment cores, their interactions, service governance, asynchronous processing, data consistency, performance testing, and production practices, while illustrating each component with diagrams and practical insights.
This article systematically explores the challenges of microservice decomposition, presenting static and dynamic solutions, architectural principles, and practical guidelines to help organizations design scalable, reliable, and business‑aligned service boundaries.
This article introduces a practical methodology for creating effective software architecture diagrams, explains the purpose and classification of various diagram types—including context, container, component, and code diagrams—offers guidelines for audience‑centric design, and showcases the C4 model with real‑world examples and tool recommendations.
This article provides a thorough overview of backend development, covering system development principles, architectural design patterns, network communication techniques, common faults and exceptions, monitoring and alerting strategies, service governance practices, and deployment workflows, all illustrated with clear explanations and practical examples.
This article explains the essential concepts of software architecture, distinguishing systems, subsystems, modules, components, frameworks, and architecture itself, and then details the various architectural layers—including business, application, data, code, technical, and deployment—while highlighting their purposes and design considerations.
This article provides a comprehensive overview of backend development, covering system development principles, architecture design patterns, network communication techniques, fault and exception handling, monitoring and alerting strategies, service governance, testing methodologies, and deployment practices to help developers build robust, scalable, and maintainable services.
The article analyzes the Chengdu COVID‑19 testing system failure, outlining its architecture, estimating traffic, identifying infrastructure and software bottlenecks, and recommending sharding, message‑queue decoupling, comprehensive monitoring, and multi‑vendor coordination to build a more reliable backend platform.
This article compares standard service interfaces and standard messaging, explains their characteristics, and shows how to choose the appropriate approach for different scenarios such as content moderation, points systems, open platforms, monitoring, and task execution pipelines.
This article compiles essential software architecture diagrams—including application, technical, security, and deployment views—providing visual references for developers to understand system structures, and encourages exploration of best practices in system design.
This article explains the capabilities, positioning, and three‑tier architecture of JD Daojia's after‑sales system, detailing how it handles multi‑endpoint requests, distributed locking, promotion‑aware split data, Elasticsearch synchronization, combined return logistics, and accurate refund processing.
This article provides a comprehensive overview of low‑latency architecture, covering network hardware, system‑level programming strategies, language choices, memory management techniques, event‑driven designs, high‑performance data structures, and visualization approaches for building ultra‑fast computing systems.
This article describes the motivation, requirements, design, and implementation of a lightweight asynchronous message processing framework built by ByteDance to handle near‑real‑time metadata changes for DataLeap's Data Catalog, detailing its architecture, thread model, state management, delay handling, monitoring, and operational experiences.
This article explains the purpose and classification of software architecture diagrams, introduces the 4+1 view model and the C4 model, and provides practical guidance on choosing the right view for different audiences to produce clear, self‑describing architectural drawings.
This article explains the concept of system architecture, outlines the classification of architecture diagrams—including the 4+1 and C4 views—describes each view’s purpose and audience, and provides practical guidelines for creating clear, self‑describing diagrams that align with code and stakeholder needs.
The article examines the common belief that reuse improves productivity, explains the logical fallacies behind it, highlights the hidden costs of over‑generalization, and proposes autonomy and consistency metrics as practical guidelines for evaluating when reuse truly adds value.
This article explains the responsibilities, required skills, and career advice for software architects, covering job duties, real‑world examples, essential technical and soft‑skill preparation, and practical tips for advancing toward and succeeding in an architecture role.
This article explains the fundamental concepts of software architecture, distinguishing it from frameworks, defining system, subsystem, module, and component, outlining the four core aspects of architecture, and detailing the various layers such as business, application, data, code, technical, and deployment architectures.
The article discusses the limitations of the existing procurement warning system, outlines the need for a comprehensive redesign to support complex business scenarios, and emphasizes continuous user feedback and seamless information and data flow to maintain long‑term competitiveness.
This article explains the concept of software architecture, its essential nature, and the relationships among systems, subsystems, modules, components, frameworks, and various architectural layers such as business, application, data, code, technical, and deployment architectures.
This article provides a comprehensive overview of software architecture, defining core concepts such as system, subsystem, module, component, framework, and architecture itself, and detailing the various layers—including business, application, data, code, technical, and deployment architectures—along with their design principles and practical considerations.
This guide walks you through structuring a system‑design discussion—from clarifying functional and non‑functional requirements, mapping user flows and API calls, to outlining high‑level architecture, scaling strategies, and drafting a database schema—using a Twitter‑like example to illustrate each step.
The article outlines a practical backend design for handling 20 million daily ID lookups across a billion records, showing how modest hardware—20 virtual machines with 16 GB RAM each—can meet the load using simple sharding, in‑memory storage, and basic networking techniques.
This article explains the importance of clear software architecture diagrams, defines basic concepts and various diagram types such as context, container, component, and class diagrams, offers practical guidelines for creating self‑describing, audience‑focused diagrams, and shares tools and examples to improve communication among developers, ops, and stakeholders.
The article outlines a simple, cost‑effective backend architecture for handling up to 20 million daily health‑status queries across a billion users, detailing data storage, sharding by ID, memory requirements, load handling, and redundancy strategies, while noting practical limitations and promotional notes.
Rate limiting safeguards distributed systems by controlling request rates through algorithms such as leaky bucket, token bucket, fixed and sliding windows, and back pressure, while client‑side tactics like exponential backoff, jitter, and careful retries, and requires atomic distributed storage solutions (e.g., Redis+Lua) to avoid race conditions.
This article details the motivation, design goals, architecture, and implementation steps of a reverse transaction microservice that handles cash and promotional refunds, reduces technical debt, and improves operational efficiency for a fast‑moving e‑commerce platform.
This article curates a selection of high‑quality open‑source repositories—including Awesome lists, freeCodeCamp, developer‑roadmap, Build‑Your‑Own‑X, Git‑ignore templates, System Design Primer, and Coding‑Interview‑University—to help developers quickly find valuable learning and reference material across many domains.
This article explores the concept of architecture—from its origins in human societal division of labor to its application in software design—highlighting why recognizing problems, defining boundaries, and splitting responsibilities are essential for building effective, scalable systems that serve human needs.
This article explains what message queues are, outlines key application scenarios such as asynchronous processing, message distribution, and traffic shaping, compares popular solutions like ActiveMQ, RabbitMQ, RocketMQ, and Kafka across performance and reliability dimensions, and provides practical guidance for selecting the most suitable queue for different business needs.
This article explains why permission management is essential for data security, introduces various permission models including basic RBAC, role inheritance, constrained RBAC, and discusses user grouping, organization‑based roles, and detailed database schema designs for both standard and ideal RBAC systems.
This article explores how applying product thinking, structured analysis, and system design can transform chaotic error‑message handling into a clear, maintainable process, offering practical tools for defining, standardizing, and dynamically configuring error prompts across multiple platforms and scenarios.
The article surveys three data‑replication models—master‑slave, multi‑master, and leaderless—explains how they enable scalability and fault‑tolerance, and examines core distributed‑system challenges such as partial node failures, unreliable networks, and unsynchronized clocks, while stressing safety‑liveness trade‑offs and design techniques like quorum and timeouts.
Learn the eleven key strategies—including system splitting, decoupling, asynchronous processing, retries, compensation, backups, multi‑active deployment, isolation, rate limiting, circuit breaking, and degradation—that together form a robust high‑availability architecture for large‑scale internet services, ensuring reliability and scalability.
This article explains how to build a high‑concurrency ticket‑seckill service that can handle millions of requests by combining distributed load‑balancing (OSPF, LVS, Nginx weighted round‑robin), a pre‑deduction stock strategy using local memory and Redis with Lua scripts, and a Go‑based HTTP server, and it demonstrates performance testing results.
This article details the architectural evolution of a price‑increase coupon system used in a C2B digital‑product recycling business, covering its initial experimental phase, platformization, sharding, intelligent recommendation, Elasticsearch integration, and stability enhancements through NoSQL and read‑replica strategies.
Baidu Wenku revamped its download function by breaking the monolith into an independent microservice, establishing unified protocols, a modular framework for security, rate‑limiting and logging, and real‑time monitoring, which reduced maintenance costs, improved user experience, and enabled rapid, system‑wide updates.
This article explores the architecture, load‑balancing strategies, and Go‑based implementation of a high‑concurrency ticket‑sniping system that can handle millions of simultaneous requests while preventing overselling and ensuring high availability.
This article explains the fundamentals of message queues, compares Kafka, RabbitMQ, and RocketMQ in terms of architecture, key concepts, advantages, and drawbacks, and provides practical guidance on selecting the most suitable queue for different application scenarios such as high‑throughput logging, financial transactions, or small‑scale services.
This article presents a comprehensive case study of how the ZhuangZhuang QA team designed, built, and deployed a payment verification tool to automate and accelerate testing of complex e‑commerce payment scenarios, detailing the business background, requirements analysis, system architecture, core functionalities, generic service invocation, and measurable efficiency gains.
This article details how Dada Express improved the efficiency of rider withdrawal payments by redesigning the clearing and disbursement workflow, introducing asynchronous thread‑pool concurrency, extending API timeouts, implementing idempotent retry logic, and adding safeguards to ensure fund security, resulting in a three‑fold reduction in processing time during peak periods.
The author refactors a high‑traffic gather‑order page by introducing a reusable multi‑level cache with update‑key validation, Redis distributed locks and asynchronous refresh, and by restructuring the processing flow using a chain‑of‑responsibility/command pattern, while also handling pagination, weighted sorting, and time‑bound marketing keys to improve reliability, extensibility, and performance.
This article explores the design of a high‑concurrency ticket‑spike system inspired by China’s 12306 platform, covering load‑balancing strategies, distributed stock deduction using Redis, Go‑based HTTP services, weighted round‑robin Nginx configuration, performance testing with ApacheBench, and practical architectural insights for handling millions of simultaneous requests.
During the Chinese New Year campaign, Douyin integrated video creation with red packet gifting, supporting both B2C and C2C flows; this article details the system’s core operations, modular design, high‑traffic subsidy handling, concurrency strategies, fault tolerance, security measures, and comprehensive performance testing.
This article explains the purpose and benefits of software architecture diagrams, introduces basic concepts and the 4+1 view classification, describes what makes a good diagram, outlines common pitfalls, and presents the C4 modeling approach with practical examples for clear communication among stakeholders.
This article explains the purpose and definition of software architecture diagrams, introduces the 4+1 view classification and the C4 model (system context, container, component, and code diagrams), discusses common pitfalls, and provides practical guidance and tool recommendations for producing self‑describing, audience‑focused architecture visuals.
This article introduces the problems of the legacy permission approach at Zhuanzhuan, compares industry‑standard RBAC and ABAC models, explains the design rationale for a hybrid RBAC‑based system, and outlines the core modules, role hierarchy, and permission types for the new unified permission management platform.
The article analyzes why modern software systems repeatedly collapse—due to growing business complexity, unpredictable changes, and architectural decay—and proposes principles such as decentralization, integration, and diversity, along with practical strategies like service mesh and eBPF, to design more sustainable, observable, and self‑evolving architectures.
This article explains the evolution of programming—from machine code, assembly, and high‑level languages—to the software crises that led to structured programming, object‑oriented design, and ultimately the emergence of software architecture as a solution for managing system complexity.
