This tutorial walks you through creating a complete five‑in‑a‑row (Gomoku) web game using vanilla JavaScript, covering development approaches, board rendering, event delegation, win‑checking algorithms, piece placement logic, game reset, testing strategies, and essential JavaScript event handling techniques.
This article chronicles the complete redesign of the BugHound bug‑submission system into UFT, covering data modeling with MySQL, migration from PHP/MongoDB to Node.js, progressive frontend upgrades from jQuery to Angular, schedule‑table algorithms, Git collaboration tactics, and future open‑source plans.
This article details Tencent’s QQ large‑scale scheduling architecture, covering multi‑site distribution, rapid dispatch mechanisms, cross‑region data synchronization, automated operation platform ZhiYun, flexible services, overload protection, rapid scaling, and comprehensive monitoring that together enable resilient, high‑performance social services.
This article explains the Promise pattern in JavaScript, showing why nested Ajax callbacks hurt readability and user experience, how Promise improves flow with three states, and demonstrates practical usage with a lightweight promise.js library and jQuery Deferred examples.
This article chronicles the author's seven‑year evolution from a disinterested student to a seasoned developer, detailing study plans, key algorithm and data‑structure books, internship experiences, custom parsers, performance‑critical mobile features, and the indispensable role of algorithms for serious programmers.
This article highlights five common programming mistakes—copying code without understanding, reinventing the wheel, over‑relying on Google, ignoring warnings, and applying quick fixes instead of permanent solutions—explaining why they harm code quality and offering practical advice to help developers write cleaner, more maintainable software.
The article presents a comprehensive list of one hundred concrete web‑application security techniques—ranging from HTTP request analysis and token validation to WAF rule conversion, honeypot deployment, IP reputation checks, and response‑time monitoring—derived from the book “Web Application Defender's Cookbook” and illustrated with real‑world examples and tool references.
This article showcases seven remarkable PostgreSQL extensions—including multi‑master replication, Greenplum MPP OLAP, pg_shard/FDW sharding, PostGIS 3D GIS, GPU‑accelerated PG‑Strom, PipelineDB streaming, and the versatile FDW interface—illustrating how they enable high‑availability, massive analytics, geographic intelligence, and real‑time data processing.
This article explains how Docker’s build‑ship‑run model bridges front‑end development and containerization, covering Docker’s history, core concepts, a sample Dockerfile for a Node.js app, and practical scenarios where Docker improves environment consistency, resource efficiency, and scalability.
Learn how to quickly set up a Python 3.4.3 development environment using pythonbrew, create a virtual environment, and install essential packages like Django 1.7 and Selenium, with step‑by‑step commands and tips for efficient workflow.
This article details Meituan Cloud's evolution from a private, self‑developed cloud platform to a high‑performance public cloud, covering the motivations, architectural upgrades across physical links, host networking, gateways, controllers, and the adoption of overlay technologies like VXLAN to achieve industry‑leading scalability and reliability.
This article provides a comprehensive guide to PHP design patterns, covering fundamentals such as cloning, singleton, factory, abstract factory, composite, decorator, facade, strategy, observer, visitor, and command patterns with clear explanations and practical code examples.
The article explains how large‑scale website architectures evolve from simple LAMP stacks to modern distributed, service‑oriented, virtualized systems, emphasizing the need for scalability, cost efficiency, middleware reuse, and continuous architectural transformation to meet growing user and development demands.
When a massive container explosion threatened Tencent's Tianjin data center, the operations team executed a 24‑hour, continent‑wide user migration that moved over 200 million QQ users to Shenzhen and Shanghai without service interruption, showcasing unprecedented disaster‑recovery capabilities.
Horizontal sharding splits a large table into multiple databases using hash‑modulo routing, improving performance and scalability; the article explains the basic algorithm, shows example calculations for a 4‑shard setup, and demonstrates how to expand shards from four to eight.
This article examines the difficulties of achieving strong consistency and continuous availability in database replication, reviews the Paxos consensus protocol and its variants, and explains how Multi‑Paxos and clock‑driven leader election can be applied to build robust high‑availability architectures.
This article presents two Oracle SQL challenges from the 3rd ITPUB "Shengtou Media Cup" Tic‑Tac‑Toe contest, detailing how to generate every possible terminal game sequence for insertion into a table and how to compute forced win strategies for any given board using pure SQL techniques.
This article explains virtualization fundamentals, categorizes its various types—including emulation, full, para‑, OS‑level, library, and application virtualization—covers memory and I/O virtualization mechanisms, and describes networking approaches such as bridging, isolation, routing, host‑only, and NAT.
This article explains how to use Redis bit operations and bitmap keys to record daily user logins and efficiently compute statistics such as today’s active users, users active over the past three days, and users active within a week.
Immutable Infrastructure treats every server or container as a read‑only unit that is replaced rather than modified, offering repeatable configuration, faster CI/CD, easier rollback, and reduced operational complexity, while requiring stateless applications and automated provisioning templates to succeed.
