This article explains why Node.js throws errors like ETIMEDOUT and EADDRINUSE, detailing the underlying glibc connect() function, its error codes, and how non‑blocking sockets and thread cancellation affect resource handling.
This article introduces Elastic-Job, a Java‑based distributed job scheduling framework from Dangdang, covering its origins, core features such as sharding and elastic scaling, deployment with Zookeeper, best‑practice usage, open‑source development philosophy, future improvements, and detailed Q&A.
This 30‑minute session introduces Ansible's core concepts, demonstrates cross‑environment automation for PHP and Java services, showcases modular playbooks, discusses practical deployment workflows, and answers common operational questions, offering a concise yet comprehensive guide for ops engineers.
This article shares the author's personal journey of conceiving, planning, writing, and publishing a technical book on Puppet, detailing the motivations, step‑by‑step process, challenges, case studies, and the professional benefits gained from turning the writing effort into tangible value.
This article explains what a Content Delivery Network (CDN) is, why it improves website response times, outlines its basic acceleration strategy, describes its core components such as origin servers, edge caches and smart DNS, and walks through the typical CDN operation flow.
This article explains the evolution of MySQL architecture—from a simple single‑instance setup to vertical and horizontal scaling, sharding strategies, and cloud‑native SaaS solutions—highlighting scalability challenges, ideal states, and practical implementation steps for high‑concurrency web applications.
This article traces the evolution of game server architectures from the first MUD systems in 1978 through successive generations—including HTTP‑based card/runner servers, the MUDOS engine, split‑world models, seamless world servers, Battle.net, casual and modern action MMOs—highlighting design choices, scalability challenges, and practical trade‑offs.
This article explains why modern web sites face exploding concurrent connections, how richer front‑end interactions and browser limits increase load, and presents practical front‑end caching, request merging, and server‑side techniques—including Apache MPM tuning, Nginx adoption, sendfile, and epoll—to reduce memory and CPU pressure.
To monitor hundreds of web apps on UAE’s PaaS platform in near‑real time, we combined Storm with lightweight log transport, a memcached‑based fqueue, and adaptive cardinality counting to efficiently compute PV, UV, response times, and custom metrics while handling cross‑cluster log aggregation.
Google’s people‑first philosophy combines an open, democratic culture, flexible 20% time, flat organization, rigorous hiring, and data‑driven performance reviews to attract top talent, foster continuous innovation, and maintain exceptionally low employee turnover.
This article explains how Oracle wait events, especially latch contention such as cache buffers chains and LRU chain latches, reveal performance bottlenecks, and provides step‑by‑step methods, diagnostic tools, SQL examples, and tuning recommendations to locate and resolve database hotspots.
The article explains why modern web systems face ever‑increasing concurrent connections, analyzes how front‑end techniques and server‑side configurations such as Apache MPM modes, Nginx, sendfile, and epoll can reduce memory and CPU consumption, and offers practical recommendations for efficient backend architecture.
The article explains FastDFS, an open‑source lightweight distributed file system built from tracker servers, storage servers, and client libraries, detailing its component roles, file upload/download workflows, storage organization, small‑file merging, HTTP support, and current limitations such as data safety and load balancing.
The article chronicles how 58.com’s web architecture evolved from a tiny, single‑machine setup to a multi‑layer, Java‑based, highly available service‑oriented platform, detailing the technical decisions, scaling challenges, and automation practices adopted at each traffic milestone.
Xinhua adopted Huawei’s cloud infrastructure and ESRI’s ArcGIS portal, using the eSDK platform to create an elastic GIS system that balances load, monitors resources in real time, and improves geographic data handling for news reporting and public‑opinion monitoring, demonstrating scalable cloud‑native integration.
This article explains the motivations, design principles, compilation and runtime techniques of Ctrip's Android plugin‑based architecture and dynamic loading framework, detailing how it solves method‑count limits, improves build speed, enables hot‑deployment, and outlines the associated trade‑offs.
The article reviews Ctrip’s multi‑year technology journey, detailing its shift to distributed architecture, OpenStack‑based private cloud, custom asynchronous messaging, large‑scale search, security analytics, and mobile innovations, illustrating how strategic technical choices supported its dominance in online travel.
The article describes how Ctrip built a large‑scale mobile testing infrastructure, including device selection, scheduling, monitoring, and the Automation Platform as a Service (APS) that integrates TestNG, Appium, Jenkins CI, and reporting to support rapid, reliable app releases.
This guide demonstrates how to configure interfaces and static routes on three Cisco routers (R1, R2, R3) using CLI commands, assign IP addresses, enable interfaces, and verify the routing table, providing a step‑by‑step example of basic network routing setup.
The article explains microservice architecture as a set of independently deployable services each focused on a single function, illustrating their roles, communication methods, deployment considerations, and key characteristics such as single responsibility, own data storage, and replaceability.
