This article explains why high‑concurrency design is essential for modern internet services, compares vertical (scale‑up) and horizontal (scale‑out) scaling, revisits the C10K/C10M challenges, and reviews process, thread, coroutine, and event‑driven models to help engineers build ultra‑scalable web servers.
Wang Xing, the CEO of Meituan, shares hard‑earned startup lessons, arguing that relentless growth often outweighs strict focus, while also highlighting counter‑examples and ancient Chinese principles that can guide modern entrepreneurs in building and scaling a company.
In this talk, Alibaba wireless expert Xu Zhao outlines the evolution of the massive Mobile Taobao app—from early webview tools to a component‑based, containerized architecture—detailing challenges such as PC‑mobile migration, device fragmentation, heavy client complexity, and the strategies employed to achieve scalable, flexible, and high‑performance mobile services.
This article explains what product evaluation is, why it matters, and outlines a step‑by‑step process—including defining goals, setting standards, selecting methods, executing tests, analyzing results, and presenting findings—to ensure both functional and experiential quality of products.
This article walks through why service discovery is essential, compares Consul's features, and provides step‑by‑step instructions for deploying a Consul cluster, integrating it with Nginx/LVS/Docker, managing nodes, and safely upgrading the system.
This guide introduces the lsof utility, explains its basic usage for listing open files, demonstrates practical scenarios such as identifying files used by specific processes, checking which process occupies a port, and leveraging lsof to recover deleted files, helping administrators troubleshoot I/O and security issues.
This article explains Docker's underlying architecture, covering why Docker needs a Linux VM on macOS/Windows, the roles of boot2docker and docker‑machine, and a step‑by‑step breakdown of what happens when you run the classic "docker run hello‑world" command.
The article outlines the design principles, modular architecture, front‑back separation, lifecycle management, testing, and deployment strategies of Alibaba’s Detail platform, aiming to improve collaboration efficiency, stability, extensibility, and reuse across various business scenarios.
This article investigates a surge of memory‑leak bugs in an Android app, tracing the root causes to WebView usage, CookieSyncManager, Dialog listeners, and handler threads on Android 4.3 devices, and offers concrete mitigation steps for developers.
The article outlines the design requirements, sharding strategies, capacity planning, cost trade‑offs, and indexing techniques for building a highly available, scalable distributed storage solution for Weibo, focusing on storage‑layer decisions without involving caching or ID generation.
A JavaScript snippet shared on Twitter claims to crash Firefox, Chrome, and Safari browsers and even force an iPhone to restart, prompting security researchers to examine its behavior, potential as a 0‑day exploit, and possible misuse in attacks.
A JavaScript snippet shared on Twitter claims to crash Firefox, Chrome, and Safari browsers and even force an iPhone to restart, prompting security researchers to examine the code, observed effects on desktop and mobile, and discuss whether it is a bug or a true 0‑day exploit.
This article explains RAID technology, detailing each RAID level's design, performance trade‑offs, and reliability characteristics so readers can choose the most suitable configuration for their storage needs.
This article compiles a comprehensive set of Linux command‑line shortcuts, Bash expressions, daily utilities, data‑processing commands, and system‑debugging tools, providing practical examples and code snippets to help users work faster and manage servers more effectively.
This article explores anticipatory interaction design, showing how platforms like Taobao, WeChat, browsers, and iOS predict user intentions to streamline sharing and navigation, and discusses two main strategies—aligning with user behavior and adapting to context—to create more efficient, respectful user experiences.
This article examines the evolution of MySQL parallel replication across versions 5.5, 5.6, MariaDB, and 5.7, comparing their threading strategies, binlog handling, performance trade‑offs, and practical deployment considerations for reducing replication lag.
This report ranks Beijing data centers by network quality, using over 27 million ping samples to evaluate packet loss and latency, and explains the testing methodology, key terminology, and the resulting comprehensive ranking of 40 facilities.
This article walks you through designing, installing, and configuring a custom WAF using Nginx and Lua (OpenResty), covering core modules, pain points of native Nginx security, code examples, deployment tips, and future enhancements for robust web protection.
This article explains how to query sharded tables by routing single‑value and multi‑value lookups using hash functions, handling non‑sharded fields, and performing cross‑database joins, illustrating each case with SQL examples and diagrams of shard selection.
This article traces the evolution of image server architectures—from a simple single‑directory setup on Windows/.NET, through cluster‑based real‑time synchronization and shared‑storage solutions, to modern FastDFS‑backed distributed file systems with CDN acceleration—highlighting scalability, reliability, and migration challenges.
