This tutorial walks through setting up a Python web project, creating a virtual environment, installing Flask, deploying with Gunicorn, managing processes via Supervisor, and configuring Nginx as a reverse proxy, providing a full end‑to‑end deployment workflow.
This article compiles practical Linux system administration techniques, covering how to check physical CPUs and cores, interpret load averages, understand vmstat columns, differentiate buffer and cache, monitor memory usage with top, inspect network connections, manage services, configure IP addresses, use iptables, rsync options, cron jobs, and troubleshoot hardware issues.
This article explains how Electron lets web developers create cross‑platform desktop applications with familiar JavaScript and Node.js, compares it to NW.js, outlines learning stages, offers documentation tips, and provides guidance on selecting and extending useful demo projects.
This article walks through creating a lightweight WebAR Pokémon‑Go‑style game using WebRTC, covering the basics of WebAR, WebRTC APIs, compatibility issues on Android and iOS, and step‑by‑step implementation details such as camera access, video rendering, and overlay techniques.
This tutorial walks through creating a Spring Boot microservice that uses Spring Cloud Stream to bind to RabbitMQ, covering project setup, required dependencies, a simple consumer implementation, application startup, log verification, core annotations, and a unit test for message production.
This comprehensive guide uses a gaming‑level analogy to walk readers through MySQL fundamentals, architecture, storage engines, memory structures, logging, backup and recovery methods, high‑availability designs, and advanced performance tuning, providing practical commands, diagrams, and best‑practice recommendations.
This guide outlines a step‑by‑step learning path for Java, covering environment setup, core language features, libraries, build tools, debugging, concurrency, native integration, security, mobile development, and the language’s history, helping beginners become proficient Java developers.
This article explores whether regular programmers should switch to AI engineering, presents three detailed real‑world transition cases, outlines step‑by‑step learning paths, essential resources, and practical advice for mastering machine learning and deep learning technologies.
This article details a company's migration from commercial load balancers to an open‑source Nginx‑based Layer‑4 solution, covering project background, technical selection, architecture design, network and Nginx configurations, operational scripts, health‑check automation, performance testing, and data analysis using Elasticsearch and Grafana.
Recent tech news highlights China’s demand that Google and Facebook obey local laws to access its 751 million users, Firefox Quantum’s rapid 170 million installations, Ruby’s gradual decline, Google’s shutdown of Project Tango, and Beijing’s new autonomous‑vehicle testing regulations with strict safety and insurance requirements.
Shield is Meituan‑Dianping’s open‑source modular UI framework for Android and iOS that splits pages into independent, lifecycle‑managed modules (Agents) defined by a remote configuration, enabling dynamic layout changes, cross‑platform consistency, decoupled communication via a RxJava‑based WhiteBoard, and easier maintenance and testing.
The article demonstrates how applying Domain‑Driven Design to a lottery platform’s microservices—by defining bounded contexts such as lottery and risk control, modeling aggregates like DrawLottery and AwardPool, using domain services and anti‑corruption layers, and enforcing high cohesion and low coupling—solves over‑coupling and anemic domain model challenges while tightly aligning the system with business logic.
This article explores the Weex SDK architecture on iOS, detailing its cross‑platform workflow, the division of JS, bridge, and native layers, the registration of modules and components, and the role of WXSDKInstance in loading and rendering JS bundles.
This article explains how the BBR congestion control algorithm, designed for long‑fat networks, overcomes the limitations of traditional TCP to dramatically improve cloud storage download speeds, detailing its principles, implementation steps, and real‑world performance gains.
The Guangzhou City Information Research Institute built a nationwide leading smart‑city spatiotemporal information cloud platform on Huawei FusionSphere OpenStack, detailing its architecture, data handling, service layers, and the concrete benefits it brings to urban governance and development.
The article explains why Percona‑MySQL 5.6 experiences occasional high‑latency connections, analyzes the role of thread pools and thread cache settings, and shows step‑by‑step how increasing thread_cache_size to match active connections eliminates the slowdown.
Learn a systematic approach for Linux system administrators to diagnose and resolve six typical problems—including filesystem errors, 'argument list too long', inode exhaustion, undeleted file space, too many open files, and read‑only filesystem—using command‑line tools, log analysis, and practical fixes.
The 2017 Double 11 stability monitoring project introduced a four‑layer monitoring architecture—including customer & sentiment, business, system water‑level, and infrastructure monitoring—along with data archiving and system‑level reliability measures to detect, respond to, and mitigate issues far faster than traditional manual processes.
The article describes how a company replaced costly commercial load balancers with an open‑source architecture based on Nginx for layer‑4 traffic and a layer‑7 cluster, detailing project background, technology selection, redundant design, network and Nginx configurations, operational scripts, performance testing, and data analysis.
This article shares a data engineer's three‑year experience using Apache Kylin for real‑time OLAP on petabyte‑scale data, describing the business background, challenges of pre‑computation, cube modeling, dimension reduction, and various optimization techniques such as hierarchy, mandatory, and joint dimensions, as well as precise count‑distinct handling.
