This article explains why web performance is critical today, presents ten practical optimization techniques—including reverse proxy, load balancing, caching, compression, SSL/TLS tuning, HTTP/2, software upgrades, Linux and server tuning, and real‑time monitoring—to potentially increase web application speed by up to tenfold.
This comprehensive guide walks you through installing Nginx from source, configuring global settings, mastering common directives, enabling gzip compression, setting up reverse and forward proxies, load balancing, SSL, systemd service management, and troubleshooting, providing ready-to-use code snippets and practical examples for server administrators.
This article explains the concept of load balancing, illustrates it with a bank queue analogy, and demonstrates how to register multiple Spring Cloud service instances, use Feign and DiscoveryClient, configure Ribbon's load‑balancing interceptor, and customize the balancing rule for effective microservice traffic distribution.
This article explains the essential characteristics of high‑availability architectures—master‑slave failover, load balancing, and horizontal scaling—and reviews six practical solutions including LVS + Keepalive, NGINX, Zookeeper, client‑side strategies, service‑level replication, and middleware approaches.
The article compares four consistent‑hashing algorithms—Ketama’s ring with virtual nodes, Rendezvous’s highest‑random‑weight method, Google’s Jump Consistent Hash, and Maglev’s lookup‑table approach—evaluating their balance, monotonicity, stability, scalability, and time complexity, and concludes that Ketama and Jump offer the best overall trade‑off.
This tutorial walks through building a three‑node UCloud lab, installing ipvsadm, configuring NAT and TUNNEL load‑balancing modes with LVS, adjusting routing and ARP settings, and verifying the setup using ipvsadm commands and curl requests.
This article explains the evolution from monolithic to microservice architectures, defines microservices, compares Spring Cloud and Dubbo solutions, and provides a detailed overview of Spring Cloud’s core components such as Eureka, Ribbon, Feign, Hystrix, Zuul, Gateway, Config, Bus, OAuth2, and Sleuth, illustrated with diagrams.
This article outlines practical guidelines for designing and implementing enterprise‑grade APIs, covering request/response definitions, unified error handling, interceptor chains, token‑based authentication, rate limiting, load balancing, clustering, caching, and strategies for achieving high concurrency and high availability.
This article provides a comprehensive overview of the Domain Name System (DNS), covering its fundamentals, protocol choices, hierarchical structure, delegation, configuration with BIND, load balancing, debugging tools, and security considerations such as amplification attacks.
This article presents a comprehensive design guide for a microservice gateway, covering functional aspects such as routing, load‑balancing, aggregation, authentication, rate limiting, circuit breaking, and retries, as well as non‑functional concerns like high performance, high availability, scalability, extensibility, and observability.
This article explains the meaning of Nginx upstream directives max_fails and fail_timeout, shows their default values, walks through a step‑by‑step experiment with two PHP‑FPM backends, and clarifies common misconceptions about failure handling and timeout settings.
This article outlines a comprehensive design for a microservice API gateway, covering functional aspects such as routing, load‑balancing algorithms, service aggregation, authentication, traffic control, circuit breaking, and caching, as well as non‑functional concerns like high performance, high availability, scalability, statelessness, and monitoring.
This article explains how to achieve high availability for stateless services by employing redundancy, vertical and horizontal scaling, various load‑balancing algorithms (random, round‑robin, weighted, least‑connections, source‑hash), and automatic scaling techniques in cloud‑native environments, while also covering performance monitoring and CDN/OSS usage.
This article explains how to design highly available stateless services by covering redundancy, vertical and horizontal scaling, load‑balancing algorithms, high‑concurrency identification, and the use of CDN/OSS, offering practical guidance for robust backend architecture.
This article walks through the step‑by‑step evolution of a Java‑based e‑commerce platform, covering single‑machine deployment, separating application and database servers, clustering, load‑balancing algorithms, session handling, read/write splitting, search integration, caching, vertical and horizontal database sharding, micro‑service decomposition, and the introduction of message middleware.
This article explains how to design backend architectures that meet the "three high" goals—high concurrency, high performance, and high availability—by using load balancing, connection pooling, traffic filtering, multi‑level caching, log optimization, and failover strategies.
This article introduces a web‑based visual generator for Nginx that lets developers quickly create configurations for reverse proxy, HTTPS, load balancing, caching, and various platforms, eliminating the usual manual editing pain and providing ready‑to‑use config files.
This article outlines a comprehensive technical architecture for internet services, covering DNS resolution (including traditional and HttpDNS), load balancing strategies and algorithms, API gateway functions and configurations, push notification mechanisms, and microservice communication patterns, providing practical references for building scalable, reliable backend systems.
This article explains the technical architecture of an internet company, covering DNS, load balancing, long connections, API gateways, push notifications, microservices, distributed transactions, and the supporting foundational services, providing a comprehensive reference for learners.
This comprehensive guide explains DNS fundamentals, its hierarchical distributed database design, TCP/UDP usage, recursive versus authoritative servers, configuration with BIND, load‑balancing techniques, sub‑domain delegation, and common security concerns such as amplification attacks.
This comprehensive guide explains DNS fundamentals, its distributed hierarchical database, TCP/UDP usage, top‑level domains, resolution workflow, recursive versus authoritative servers, caching, smart routing, bind configuration, load balancing, sub‑domain delegation, debugging tools, and DNS amplification attacks.
The article presents sixteen practical TCP network‑programming best practices—from setting SO_REUSEADDR and defining port standards to using application‑layer heartbeats, exponential backoff, connection limits, client‑side load balancing, periodic DNS refresh, optimal buffer sizing, configurable timeouts, proper connection‑pool sizing, and comprehensive metrics—to help developers build stable, reliable applications.
The article introduces load balancing as a vital solution for high‑traffic systems, explains vertical and horizontal scaling, classifies balancers by hardware, layer and algorithm, and details common algorithms—random, weighted, round‑robin, least‑active, IP‑hash, and consistent hash—with code examples and usage guidance.
This guide explains Nginx's core concepts, installation on Linux, common commands, configuration structure, reverse‑proxy and load‑balancing implementations, static‑dynamic separation, and high‑availability setup with keepalived, providing step‑by‑step examples and practical code snippets.
This comprehensive guide explains Nginx’s core concepts—including reverse and forward proxy, load balancing, static‑dynamic separation, common commands, configuration blocks, and high‑availability setup with keepalived—providing step‑by‑step examples, diagrams, and practical tips for deploying scalable, high‑performance web services.
Learn how to set up basic Nginx load balancing with a minimal nginx.conf, create multiple Node.js services, and explore common strategies like round-robin, weighted round-robin, and IP hash, complete with code examples and testing results to ensure even request distribution.
This comprehensive guide explains what HAProxy is, its core functions and key features, then walks through installing, configuring, and running both L7 and L4 load balancers on Linux, adding logging, log rotation, monitoring, and achieving high availability with Keepalived.
This article provides a comprehensive overview of Kubernetes, covering its core components, container operations, service discovery layers, pod shared resources, common CNI plugins, multi‑layer load balancing, isolation dimensions, network model principles, and various IP address categories for large‑scale deployments.
This article presents a high‑availability Jenkins distributed architecture that leverages master‑slave deployment, label‑based node management, Kubernetes containerization, and LVS load‑balancing to address resource constraints, configuration complexity, and maintenance overhead in large‑scale CI pipelines.
This guide demonstrates how to achieve high availability for Nginx by deploying Keepalived in a virtual IP failover setup, covering installation via yum or source, configuration of keepalived and VRRP scripts, service management, and verification steps on two CentOS servers.
This article provides a detailed introduction to Nginx, covering its architecture, core configuration directives, installation steps, reverse proxy and load‑balancing setups, caching, HTTPS, CORS handling, gzip compression, and practical examples to help developers and operations engineers configure and use Nginx effectively.
This article outlines a comprehensive design for a microservice API gateway, covering functional aspects such as routing, load balancing, aggregation, authentication, rate limiting, circuit breaking, caching, retries, and logging, as well as non‑functional concerns like high performance, high availability, scalability, and monitoring, with practical implementation options and recommendations.
This article explains the DNS system, its distributed architecture, protocol details, hierarchical database structure, resolution process, server types, configuration with BIND, load balancing, subdomain delegation, and security considerations such as amplification attacks, providing a comprehensive guide for operations and networking professionals.
This article explains how to build a highly available, high‑performance, easily extensible, scalable and secure web application system by describing the evolution of large‑site architectures, common patterns such as layering, clustering, caching, asynchronous processing, and the core architectural factors of performance, availability, scalability, extensibility and security.
This article presents a collection of frequently used Nginx configuration examples—including listening ports, access logs, server names, static assets, redirects, reverse proxy, load balancing, and SSL settings—to help developers quickly set up and customize their web server deployments.
This article provides a comprehensive technical overview of large‑scale distributed website architecture, covering characteristics, goals, common patterns, high‑performance and high‑availability designs, scalability, extensibility, security, agility, a seven‑layer reference model, and the evolutionary steps of modern e‑commerce systems.
This article explores Nginx's origins, why it outperformed Apache, its core features such as event‑driven architecture and modularity, explains forward and reverse proxy concepts, and details the load‑balancing algorithms Nginx supports, providing practical insights for backend engineers.
The article presents a comprehensive overview of large‑scale distributed website architecture, detailing its characteristics, performance and availability goals, layered design patterns, high‑performance and high‑availability techniques, scalability, extensibility, security, and practical e‑commerce case studies.
This article provides a comprehensive technical overview of large‑scale distributed website architecture, covering characteristics, design goals, high‑performance, high‑availability, scalability, security, and detailed patterns such as layered design, caching, clustering, load balancing, database sharding, CDN, and service‑oriented decomposition.
The article thoroughly examines Tars’s Java RPC client, explaining its initialization, proxy generation via JDK dynamic proxies, diverse load‑balancing strategies, NIO‑based Reactor networking, and both synchronous (CountDownLatch) and asynchronous callback mechanisms, supplemented with detailed source‑code illustrations of each component.
This article explains the core Spring Cloud modules—including service discovery with Eureka, client‑side load balancing via Ribbon, declarative HTTP calls with OpenFeign, circuit breaking with Hystrix, API gateway features of Zuul, centralized configuration with Config, and message broadcasting with Spring Cloud Bus—illustrating their concepts, usage patterns, and integration examples for building resilient microservice architectures.
This article explains how consistent hashing, combined with Docker-based microservice architectures, reduces data movement during dynamic scaling by using a ring‑shaped hash space and intelligent node placement, making auto‑scaling more efficient and resilient.
This cheat sheet provides concise Nginx configuration examples covering listening ports, logging, domain handling, static file serving, redirects, reverse proxy, load balancing, and SSL setup, helping developers quickly configure a high‑performance web server.
This article explains how to build highly available stateless services by using redundant deployment, vertical and horizontal scaling, various load‑balancing algorithms, and automatic recovery mechanisms, while also covering monitoring, high‑concurrency identification, and the role of CDN and OSS in resilient architecture.
This article explains the origin and necessity of load balancing, compares DNS, hardware, and software approaches, details the Linux Virtual Server (LVS) architecture, its netfilter foundation, and the DR, NAT, and Tunnel operating modes with their advantages, disadvantages, and typical use cases.
This article explains the fundamentals of consistent hashing, compares the classic ring‑based method with the more efficient jump consistent hash algorithm, provides reference implementations in C++, discusses their time‑complexity and practical trade‑offs, and shows how they are applied in systems such as Greenplum.
This article dissects how China’s 12306 ticket platform handles millions of simultaneous requests by using layered load balancing, distributed clustering, Nginx weighted round‑robin, Redis‑based pre‑deduction, and a Go implementation that demonstrates local and remote stock deduction, performance testing, and fault‑tolerant design.
Spring Cloud provides a comprehensive suite of tools—including Eureka, Ribbon, Feign, Hystrix, and Zuul—that simplify service discovery, load balancing, fault tolerance, and routing, enabling developers to efficiently build, manage, and scale microservice architectures illustrated through an e‑commerce order‑processing scenario.
This article provides a comprehensive overview of Kubernetes architecture, covering container operations, core components, multi‑center deployment models, service discovery methods, pod resource sharing, CNI plugins, load‑balancing layers, isolation dimensions, network principles, and IP address classifications.
This article explains the meaning of Nginx upstream directives max_fails and fail_timeout, demonstrates their behavior with a PHP‑FPM test setup, and clarifies common misconceptions and best‑practice settings for reliable load balancing.
This article explains how service routing selects the most suitable service node for a consumer, covering scenarios such as grouped calls, gray releases, traffic switching, read/write separation, and provides concrete condition, whitelist, blacklist, and script‑based routing rules with implementation details.
This guide walks through configuring Spring Boot 2.3.9 with Spring Cloud Hoxton to register services in Zookeeper, set up provider and consumer applications, and achieve client‑side load balancing using Spring Cloud LoadBalancer.
This article explains Feign’s internal workflow, details its key annotations, shows how to enable GZIP compression, configure logging, set timeouts, and handle multi‑parameter GET/POST requests, including custom request interceptors and dependency options for advanced Spring Cloud microservice communication.
This article describes the end‑to‑end design, implementation, and testing of a high‑throughput, extensible API gateway built with Spring WebFlux, Netty, Nacos service discovery, dynamic routing, load‑balancing, authentication plugins, and WebSocket‑based configuration synchronization.
From a simple CRUD application to a robust distributed architecture, this article explains why vertical scaling hits limits, how horizontal scaling and system partitioning work, the goals of transparency, scalability and reliability, and key concepts such as sharding, load balancing, CAP and BASE theories.
This article explains what API gateways are, why they are essential in microservice architectures, and how they address cross‑cutting concerns such as authentication, transport security, load balancing, request routing, dependency resolution, and data transformation, illustrated with a Node.js example.
This article distills Bilibili's technical director insights on building high‑service‑quality architectures, covering systematic load‑balancing strategies, sophisticated rate‑limiting mechanisms, robust retry policies, precise timeout controls, and comprehensive approaches to prevent cascading failures in large‑scale systems.
This article explains the origins, types, and inner workings of load balancing—including DNS, hardware, and software solutions—covers the Linux Virtual Server (LVS) architecture, netfilter fundamentals, and compares DR, NAT, and Tunnel modes with their advantages, drawbacks, and ideal use cases.
This guide walks you through Nginx's high‑performance architecture, explains forward and reverse proxy concepts, demonstrates load‑balancing and static‑dynamic separation techniques, shows step‑by‑step installation and common commands, and details a high‑availability setup with Keepalived, all illustrated with practical examples and diagrams.
This article explains the fundamentals of distributed systems, covering why they arise, vertical and horizontal scaling, system splitting, sharding and partitioning strategies, load balancing, replication, the CAP theorem, and the BASE model, all illustrated with practical examples and code snippets.
This article describes the design, architecture, implementation, and testing of a high‑throughput API gateway built with Spring WebFlux, Netty, and Nacos, covering technology selection, custom routing rules, load‑balancing, service registration, data synchronization, and performance benchmarking.
This article explains what Dubbo Spring Cloud is, how it registers Dubbo services as REST metadata, the core DubboMetadataService API, step‑by‑step integration with Spring Cloud clients, and the differences in routing and load‑balancing compared to traditional Spring Cloud Ribbon.
This article introduces LVS, a layer‑4 load‑balancing tool, explains its advantages over layer‑7 solutions like Nginx, describes how combining LVS with Nginx and Keepalived creates a highly available, horizontally scalable architecture, and details the three scheduling modes VS/NAT, VS/TUN, and VS/DR.
This article explains how Dubbo Spring Cloud enables Spring Cloud clients to invoke Dubbo services, covering metadata handling, code examples, configuration steps, and a comparison of routing and load‑balancing mechanisms between Dubbo and Spring Cloud.
This article explains the origins of Nginx, compares it with Apache, describes why Nginx gained popularity, details forward and reverse proxy concepts, and outlines the various load‑balancing algorithms it supports, providing a comprehensive overview for backend developers and operations engineers.
This article walks through the design and implementation of a Java RPC framework, detailing added serialization options, multiple load‑balancing strategies, client‑side service caching, TCP long‑connection handling with Netty, performance testing, and provides the full source code for replication.
This comprehensive guide walks you through installing Nginx on CentOS 7.6, explains core concepts such as simple vs non‑simple requests, CORS, forward and reverse proxies, then shows step‑by‑step configurations for virtual hosts, reverse proxying, gzip compression, load balancing, high‑availability with keepalived, device‑specific routing, HTTPS setup and dozens of practical tricks for production environments.
This guide explains how to combine Spring Cloud's service registration and discovery with RSocket, covering naming conventions, Consul setup, RSocket service implementation, client load‑balancing, broker mode support, and developer‑experience enhancements for robust backend communication.
This article describes a series of improvements to a Spring‑Boot based Java RPC framework—including support for Protobuf and Kryo serialization, multiple load‑balancing algorithms, client‑side service caching, TCP long‑connection reuse via Netty, and a performance test that reduces request latency by more than tenfold.
This article explains the background of server load balancing (SLB), compares layer‑4 and layer‑7 implementations, and details three transmission modes—reverse proxy, transparent, and triangle—illustrating packet flows, configuration examples, and security considerations with diagrams and analysis.
This article explains why the team built a dedicated online messaging system, the scenarios where Kafka fell short, the decision to adopt RocketMQ, deployment strategies, SDK design, load‑balancing, distributed monitoring, and performance tuning tips for a robust backend solution.
This article describes the end‑to‑end design, technology selection, architecture, core code implementation, data synchronization, and performance testing of a custom high‑throughput gateway built with Spring WebFlux, Netty, and Nacos, highlighting routing rules, load‑balancing, and gray‑release capabilities.
This article explains RocketMQ consumer fundamentals, covering concurrent and ordered consumption modes, how to achieve idempotent processing with Redis locks, the load‑balancing strategy implemented by RebalanceImpl, and the complete pull‑process‑consume workflow including code examples.
The article uses a historical story to illustrate basic hash‑based partitioning, its shortcomings when nodes change, and then introduces consistent hashing, hash rings, and virtual nodes as solutions for balanced load distribution and minimal data migration in distributed systems.
This article explains how to design an elastic microservice architecture that can handle sudden traffic spikes, covering data partitioning, cache design, service layering, governance, adaptive circuit breaking, and auto‑scaling techniques using Go, gRPC, Kubernetes, and load‑balancing strategies.
This article explains the evolution of load balancing, compares DNS, hardware, and software approaches, details the Linux Virtual Server (LVS) architecture, its integration with netfilter, and walks through the DR, NAT, Tunnel, and FullNAT modes with their advantages, drawbacks, and typical use cases.
This article explains Dubbo’s internal architecture, covering service registration and discovery with Zookeeper, RPC invocation details including load balancing, routing, and fault‑tolerance strategies, as well as its network protocol and thread‑dispatch mechanisms, providing practical insights for backend developers.
This guide explains Nginx’s core concepts—including reverse and forward proxy, load‑balancing strategies, static‑dynamic separation, essential commands, configuration file structure, practical reverse‑proxy setups, load‑balancing implementations, and high‑availability clustering with keepalived—providing a complete roadmap for building robust backend services.
This article explains Nginx’s core concepts—including reverse proxy, load balancing, static‑dynamic separation, common commands, configuration blocks, and high‑availability setup with Keepalived—providing step‑by‑step guidance and practical examples for building robust web infrastructure.
This article provides a comprehensive overview of Kubernetes, covering its core components, container deployment and scaling, service discovery methods, shared pod resources, common CNI plugins, multi-layer load balancing, isolation dimensions, network model principles, and IP address classifications for large-scale cloud-native deployments.
This article details the overall architecture of JD.com Data Science's JDDLB load balancer, its high‑performance and high‑availability features, and presents a comprehensive performance comparison of SSL/TLS offloading using Intel QAT acceleration cards, including async processing, user‑space driver zero‑copy implementation, crash analysis, and process‑level engine scheduling.
This article explains the background, three transmission modes of server load balancing (SLB), and detailed packet‑capture analysis for reverse‑proxy, transparent, and triangle modes, illustrating how traffic is rewritten and forwarded between clients, the load balancer, and real servers.
This guide walks developers through a step‑by‑step progression of performance‑boosting techniques—including zero‑copy I/O, epoll, thread pools, lock‑free programming, IPC, RPC, database indexing, caching, Bloom filters, full‑text search, and load balancing—to help build faster, more scalable backend services.
This article provides a comprehensive overview of Nginx, covering its role as a lightweight web and reverse proxy server, essential command-line controls, practical configuration examples for basic reverse proxy, load balancing, multi‑webapp routing, static site serving, file server setup, HTTPS, and CORS handling.
This article explores the design of a high‑concurrency train ticket‑seckill system, covering 12306 backend architecture, multi‑layer load balancing, Redis‑based stock deduction, Go code examples, performance testing, and strategies to prevent overselling and ensure fault tolerance.
This article explores the architecture and implementation of a high‑concurrency ticket‑spike system, covering distributed load‑balancing, Nginx weighted round‑robin configuration, Go‑based local and remote stock deduction with Redis, performance testing, and strategies to avoid overselling and underselling.
The article analyzes the extreme‑traffic challenges of China’s 12306 ticket‑spike service, presents a layered load‑balancing architecture using OSPF, LVS, and Nginx weighted round‑robin, and demonstrates a Go‑based prototype that combines local in‑memory stock deduction with Redis‑backed global stock control to achieve stable, high‑throughput ticket purchasing without overselling.
This article explains the purpose of Server Load Balancing (SLB), describes its three transmission modes—reverse proxy, transparent, and triangle—detailing packet flows, TCP handshakes, and HTTP interactions captured with Tcpdump and Wireshark, and discusses security considerations for each mode.
This guide walks through preparing four servers, installing and configuring Nginx as a load balancer, setting up Keepalived for virtual IP failover, and verifying that traffic seamlessly switches between the master and backup nodes.
This article presents ten practical recommendations—including reverse‑proxy deployment, load balancing, caching, compression, SSL/TLS optimization, HTTP/2/SPDY adoption, software upgrades, Linux and web‑server tuning, and real‑time monitoring—to dramatically improve web‑application performance, potentially reaching tenfold speed gains.
This article provides a detailed overview of Nginx, covering its high‑performance architecture, reverse‑proxy concepts, load‑balancing strategies, static‑dynamic separation techniques, common command‑line operations, configuration file structure, practical reverse‑proxy and load‑balancing examples, and a high‑availability solution using Keepalived.
This article provides a systematic overview of Nginx’s high‑performance architecture, covering its modular design, master/worker process model, event‑driven loop, HTTP request processing phases, location matching rules, upstream load‑balancing, FastCGI and proxy configurations, rate‑limiting mechanisms, and common 502 error troubleshooting, while offering practical tips for reading the source code.
This article walks through the step‑by‑step evolution of a Java web e‑commerce platform, covering initial single‑machine deployment, server‑database separation, application clustering, load‑balancing techniques, read‑write splitting, caching, database sharding, service‑oriented architecture, and the introduction of messaging middleware to achieve a highly scalable and maintainable system.
This tutorial walks through creating a Spring Cloud microservice ecosystem by configuring a Eureka registration server, building a service provider and consumer with Spring Boot, demonstrating REST‑template and Ribbon integration, and setting up high‑availability Eureka clusters using multiple instances and load‑balancing strategies.
This article explains the principles and procedures of disaster recovery switching, covering network switching methods (IP, DNS, load balancer), DNS resolution processes, load balancing technologies, and application-level failover techniques such as clustering and active‑active architectures, highlighting decision criteria and best practices for data‑center continuity.
The article explains how Distributed Hash Tables replace simple modulo hashing with a ring‑based scheme, demonstrates severe data skew in basic implementations, and shows that adding multiple virtual nodes plus a load‑boundary factor dramatically balances storage and request distribution across cluster nodes.
This comprehensive guide covers Nginx's architecture, reverse proxy and load‑balancing concepts, static‑dynamic separation, Linux installation steps, common command‑line usage, configuration file structure, practical reverse‑proxy and load‑balancing setups, high‑availability with keepalived, and the underlying master‑worker process model.
This article describes the architecture of JD.com’s JDDLB public‑traffic load balancer and details how offloading CPU‑intensive SSL/TLS cryptographic operations to Freescale C291 acceleration cards—via custom NGINX modules, OpenSSL Engine integration, and synchronous/asynchronous driver interfaces—significantly improves connection‑establishment rates and overall throughput.
This article explains how modern web services use server clusters and load‑balancing devices, compares the three most popular software balancers—LVS, Nginx, and HAProxy—by describing their architectures, operating modes, advantages, disadvantages, and suitable deployment scenarios for different site scales.
This article walks through the step‑by‑step evolution of a Java‑Web e‑commerce system—from a single‑server monolith to clustered services, read‑write separation, search integration, caching, sharding, and finally service decomposition—highlighting the architectural decisions and challenges at each stage.
