The Ctrip Technology Center hosted a deep learning meetup in Shanghai featuring academic and industry experts who presented applications of AI in tourism, advertising, natural language processing, computer vision, knowledge graphs, recommendation systems, and discussed future research directions.
This guide demonstrates how to create MySQL tables with JSON columns, insert JSON data, perform queries using JSON functions, and update JSON fields, covering essential functions like JSON_CONTAINS, JSON_SEARCH, JSON_EXTRACT, JSON_MERGE, and JSON_SET.
The article explores how IT storage vendors can extend the value of aging equipment through comprehensive lifecycle management and stock operation strategies, emphasizing product competitiveness, design considerations, customer‑centric migration paths, and coordinated team efforts to balance risk, cost, and service continuity.
The article explains why traditional LIMIT OFFSET pagination becomes inefficient on large MySQL tables, analyzes the performance impact of counting rows and using SQL_CALC_FOUND_ROWS, and presents several optimized techniques—including index‑based counting, keyset pagination, page‑number caching, and temporary‑table approaches—to achieve fast and scalable pagination.
Node.js streams provide four core types—Readable, Writable, Duplex, and Transform—plus an objectMode for arbitrary data, and by using .pipe() they enable flow‑controlled processing with back‑pressure, as illustrated through detailed explanations, Gulp and Browserify case studies, and a hands‑on changelog generator example.
This tutorial explores advanced console.log techniques—including format specifiers, CSS styling, image rendering, and creating ASCII art—while detailing browser compatibility, practical code examples, and useful tools for front‑end developers seeking more expressive debugging output.
This article explains the WebP image format, compares its size and quality against JPEG/PNG, shows how to install command‑line tools, presents performance test results, and provides JavaScript and Nginx PageSpeed solutions for serving WebP to supported browsers.
feWorkflow replaces the original gulp‑ui by leveraging Electron to run a bundled gulpfile, while React, Redux, and Immutable.js provide a modern UI and state management, and Webpack compiles ES6 code; the article details the architecture, setup, key features, and code examples for this desktop workflow tool.
The article describes a step‑by‑step experiment that moves hourly partitioned indexes into memory on Oracle 12c to boost insert performance, then details the unexpected issue of offline index datafiles causing rebuild failures, and explains how to work around the problem by adjusting tablespaces and handling temporary segments.
This short tutorial explains how to enhance boring report pages by embedding a free weather forecast widget using an iframe and JavaScript, covering provider selection, code insertion, and integration with FineReport, plus tips for sizing and transparency.
This article outlines a step‑by‑step learning roadmap—including HTML/CSS/JavaScript, computer‑science fundamentals, algorithms, tooling, backend basics, and project work—that helped a complete beginner become a capable junior front‑end developer within just over half a year.
This article explains how Linux implements POSIX signal handling in multithreaded applications, detailing the relationship between signals and threads, the kernel structures like task_struct, signal_struct, and how signals are delivered, blocked, and cause group exits within a thread group.
This article explains the principles of version control systems, illustrating the evolution from manual file‑locking methods to modern distributed workflows with checkout, check‑in, merging, branching, and collaborative features exemplified by the custom Hit and HitHub platforms.
This guide explains how to prepare the FindBugs environment, define a custom rule that flags System.out and System.err calls, write the detector using BCEL/ASM, integrate it into FindBugs configuration files, repackage the tool, and verify the rule works on compiled Java bytecode.
The CVE‑2016‑4971 vulnerability in older wget versions allows attackers to redirect HTTP downloads to malicious FTP resources, causing hidden .bash_profile files to be written and executed, which can grant full host compromise and rootkit installation.
This guide demonstrates how to configure Huawei routers for IP Source Guard using static binding tables and DHCP Snooping dynamic binding, covering command-line steps to add static entries, enable IPSG on interfaces and VLANs, and set up trusted ports for DHCP snooping.
After nearly a decade of work in embedded, web, mobile, consulting, and integration projects, the author outlines four major knowledge areas—engineering methods, system integration, project management, and development—detailing essential practices, design principles, and technology stacks such as C, Android, cloud services, and big data.
This article compares JavaScript's var and let declarations, showing how let provides block scope, avoids hoisting pitfalls, and delivers noticeable performance gains in loops, illustrated with clear code examples and benchmark results.
This article explains how to enable MySQL scheduled events, shows the full CREATE EVENT syntax with practical timing examples, covers advanced operations like multi‑statement events and disabling, and then dives into table partitioning techniques (RANGE, HASH, KEY, LIST) with detailed commands and troubleshooting for large InnoDB tables.
This article explores building a scalable Python-based operations automation platform, detailing the OMServer architecture, why Python is chosen, module customization, security auditing, and client‑server implementation, while highlighting key third‑party libraries and future enhancements for DevOps teams.
