This article breaks down Tomcat’s modular architecture, explaining how a single Server contains multiple Services, each pairing Connectors and a Container, and details the inner workings of Connectors, Containers, and their pipeline‑Valve processing to help developers master Tomcat internals.
This article explains core refactoring techniques—Move Method, Move Field, Extract Class, Inline Class, Hide Delegate, Remove Middle Man, Introduce Foreign Method, and Introduce Local Extension—showing when to apply each, how to identify candidates, and the benefits for cleaner, more maintainable object‑oriented code.
This article explains entropy, joint entropy, conditional entropy, and related measures such as KL divergence and cross‑entropy, using intuitive coin‑flip examples and mathematical formulas to show how they quantify uncertainty and information in probability distributions.
This article explains the different ways to run Python on Windows, covering the IDLE interactive shell, command‑prompt execution, special variables, error handling, command history, and how to write and run longer scripts using a text editor within IDLE.
In 2017 Ctrip reorganized its wireless engineering to adopt a lifecycle‑driven, platform‑based approach, introducing the Mobile Tech Platform (MTP) and Mobile Continuous Delivery (MCD) platforms that unified component services, development frameworks, and automated build‑release pipelines for over 20+ apps, dramatically improving efficiency and quality.
This article outlines the comprehensive set of fundamental skills, tools, methodologies, and knowledge domains that a software engineer should master to effectively solve real-world problems, ranging from computing models and data processing to system architecture, testing, and continuous learning resources.
This article recounts a 2017 internal high‑performance competition where a C server handling a 40 million‑row user‑info dataset was progressively optimized through data compression, custom hash tables, memory layout redesign, and a thread‑pool model, ultimately achieving a four‑fold throughput increase.
This tutorial walks programmers through building a simple TensorFlow linear regression model that learns the relationship between attack power and damage in a game, covering data preparation, model definition, loss calculation, optimization, training loops, and evaluation with complete Python code examples.
This article provides a comprehensive overview of PHP 7.2's upgrade changes, detailing backward‑incompatible core modifications, new language and extension features, deprecated functions, altered behaviours, added functions and classes, removed extensions, and updated INI and Windows support, all essential for backend developers.
京东游戏精灵 is a component-based game platform that enables businesses to rapidly develop and deploy interactive games by reusing pre-built modules, significantly reducing development time and costs while enhancing user engagement through features like red envelopes and rewards.
This article provides a beginner-friendly guide to shell scripting, covering script creation, variable definitions, read‑only and unset variables, string handling with quotes, echo usage, conditional if‑else statements, for and while loops, and two methods for executing scripts, all illustrated with clear code examples.
This article explains the DevOps concept, its historical evolution, the advantages of faster and more reliable software delivery, the cultural and technical drivers behind its rise, and current adoption trends and tools used by enterprises worldwide.
The article introduces ArthurCI, a front‑end continuous‑integration platform developed by 58, detailing its design, performance optimizations such as yarn caching and parallel webpack compression, ease‑of‑use integration steps, stability features, and future data‑driven enhancements, while comparing it with tools like TravisCI.
This article explains how Rax combines React Native‑style syntax with Weex capabilities to let front‑end developers write once and run on both web and native platforms, detailing the underlying native implementation, virtual‑DOM design, layout and component differences, and practical tips for using Rax in real projects.
This article explains key refactoring techniques—Extract Method, Inline Method, Inline Temp, Introduce Explaining Variable, Split Temporary Variable, Remove Assignments to Parameters, and Replace Method with Method Object—showing when to apply each, why they improve code clarity, and providing Java code examples for each transformation.
This article compiles 35 Linux operations interview questions—including multiple‑choice, coding, and essay topics—along with detailed answers covering VLANs, system calls, IP addressing, TCP/UDP, process handling, data structures, and networking fundamentals to help candidates prepare effectively.
An in‑depth recount of eight backend interview experiences across companies like Afanti, Guokr, Veeva, Zhihu, and ByteDance, detailing each round’s questions, technical challenges such as browser request flow, database design, and code snippets, while offering practical advice for aspiring Python developers.
The article reflects on how DevOps, Docker, Kubernetes and lean/TOC thinking have transformed over the past two years, explains the three‑step workflow for building a value‑stream delivery pipeline, and offers practical guidance on culture, feedback loops, and handling unplanned work to achieve reliable, business‑focused IT operations.
The article recounts the author’s 2017‑onward journey building an intelligent operations platform at Tencent, detailing challenges such as legacy thresholds, AIOps talent shortage, and lack of frameworks, and explains how a two‑stage hybrid unsupervised‑supervised model was devised to automatically detect anomalies across millions of KPI time‑series, enabling scalable root‑cause analysis and cost optimization.
This article compares the XA protocol and the TCC model, explaining their architectural differences, performance characteristics, scalability benefits, and suitable application scenarios to help architects choose the right distributed transaction solution for their systems.
