This guide demonstrates how to use Selenium WebDriver with Java to delete an existing shipping address and add a new one, including handling dropdown selections for province, city, and area, with complete code examples and step‑by‑step explanations.
This guide shows how to create reusable UiAutomator helper methods that perform long‑press actions on Android UI elements—by resource ID, visible text, or explicit coordinates—using a swipe call with a 300‑step duration, and mentions extending the approach to custom gesture paths.
This article explains how to test a probabilistic lottery API where the winning chance increases with consecutive losses, outlines the required interfaces, discusses two large‑scale testing approaches, and highlights the challenges of ensuring correctness without consecutive wins.
This article explains how to set up a Windows environment with Node.js, Python, and Appium, dynamically generate desired capabilities for multiple phones, launch parallel Appium services and tests using multi‑process techniques, and handle port detection and release to achieve efficient multi‑device automation.
This article analyses the historical background, recent trends, and future outlook of the software testing industry, identifies key factors influencing test engineers' career growth, and offers practical recommendations on technical skill development, management pathways, and navigating the changing QA landscape.
When automating a download flow with Selenium Java, you may encounter three browser windows; this article explains how to enumerate all handles, switch to each window, perform actions, and close them safely using explicit checks and WebDriver commands.
To avoid building separate search services for each Xianyu business, the team created a unified, generic search architecture based on Alibaba’s HA3 engine and a control layer that automates data dumping, indexing, query translation, and result ranking across five subsystems, enabling new services to be onboarded in minutes instead of weeks.
This guide explains how to solve Selenium‑Java cookie expiration by fetching the latest user token from a MySQL database and inserting only the essential MyName and User_token_Session cookies before refreshing the browser session.
The article explains traditional release practices, contrasts monolithic and microservice architectures, highlights challenges of scaling microservices, and shows how Kubernetes provides automation, configuration management, fault handling, and elastic scaling to streamline cloud‑native deployments.
This document provides a detailed, chapter‑by‑chapter guide to Jenkins, covering its fundamentals, installation on various platforms, management, integration with tools, pipeline creation for frontend, backend, and mobile projects, as well as container deployment and monitoring solutions.
This article shares a comprehensive collection of reusable UiAutomator methods—including swipe gestures, screenshot handling, image analysis, UI element lookup, waiting strategies, click actions, scrolling, app launch/stop commands, and miscellaneous helpers—providing Android developers with ready‑to‑use Java code for robust UI automation testing.
This guide shows how to automatically change the Android input method to UTF‑7 or any other IME during UiAutomator tests by executing ADB commands, listing available IMEs, and handling command output on both macOS and Windows environments.
This article shares a collection of Java Selenium utility methods that use JavaScript to click hidden or obstructed elements, scroll pages, and manipulate element visibility, providing ready-to-use code snippets for web automation challenges.
The article explains why DevOps and SRE engineers top the 2019 StackOverflow IT job popularity list, outlines their responsibilities, career prospects, required skills, and provides practical advice for aspiring professionals.
This guide explains how to configure a Jenkins slave Docker image by installing JDK, Maven, and other build tools, adding the agent.jar, setting environment variables, and providing a startup Bash script to launch the Jenkins agent within the container.
When using UiAutomator on macOS you must prepend the full path to the Android command and adjust slash handling, otherwise you encounter "Cannot run program" errors; this guide shows the errors, the required fixes, and provides a complete Java helper class for automated testing.
This article shares a DevOps consultant’s personal journey, detailing the diverse responsibilities, tools, and mindset required—from early full‑stack experience and virtualization research to CI/CD pipelines, infrastructure‑as‑code, security, load balancing, and fostering a DevOps culture across teams.
This article examines the evolution of Youzan's Opsflow workflow engine, detailing its architecture, components, and how it solved numerous operational challenges such as low customizability, lack of progress visibility, and fragmented approval processes, while outlining its current status and future roadmap.
When clearTextField() fails to delete entire content—especially for Chinese characters—in Android UI automation, this article presents a custom cleartext() method that retrieves the field length and programmatically sends delete key events to reliably clear the input.
This tutorial shows how to use the polar equation of a heart, convert mathematical coordinates to screen coordinates, and employ UiAutomator's swipe method to draw a heart shape on an Android device using Java.
This guide demonstrates how to create Jenkins roles, authorize plugin APIs, and automate user creation and role assignment using Python scripts and HTTP POST requests, including sample code for creating accounts, granting roles, and managing a list of users via a parameterized Jenkins job.
This guide shows how to install inotify-tools and gzip, use inotifywatch to monitor directory events, filter specific events, and create a bash script with inotifywait that automatically moves and compresses newly added files for secure storage.
The author encountered unexpected security‑warning pop‑ups during Android UIAutomator testing and created a UiWatcher that automatically clicks "Do not remind" and "Allow" to keep the test flow uninterrupted, sharing the full code for others to use.
This article explains how to parse a Swagger JSON document and automatically generate maintainable Java test code for each API endpoint, detailing the handling of GET query parameters, POST form‑data, RESTful path variables, and header conventions.
This article presents a detailed, categorized list of DevOps tools—including version control, automated build and testing, CI/CD, container platforms, configuration management, micro‑service platforms, logging, and monitoring solutions—providing concise descriptions for each to help teams select appropriate utilities for modern software delivery pipelines.
This guide walks through setting up a two‑node Linux environment, installing Ansible, configuring its inventory and SSH keys, and demonstrates common Ansible commands for managing hosts, checking connectivity, and executing remote tasks.
This tutorial explains how to write Ansible Playbooks in YAML to automate complex tasks such as batch installing MySQL on remote servers and creating scheduled cron jobs, including code examples, parameter explanations, execution commands, and result verification.
This comprehensive tutorial walks you through Ansible fundamentals, including its architecture, installation, core modules, playbook structure, variables, templates, handlers, roles, and advanced features such as conditional execution, loops, and tagging, providing step‑by‑step examples and practical demonstrations for effective automation.
This article explains how to use Jenkins' Lockable Resources Plugin to lock and release virtual machines across Linux, AIX, Windows, Solris, and HP‑UX, ensuring that concurrent jobs do not interfere with each other's environments during development and testing.
This tutorial explains how to retrieve Zabbix alarm data via its API, deduplicate and count triggers, generate an HTML report, and automatically email the report using Python, with optional weekly scheduling via Linux cron.
This article shares a set of operational Murphy’s laws, practical process‑management tips, and automation strategies to help ops engineers reduce human error, improve safety, stability, efficiency, and cost‑saving in daily work.
This article explains the fundamental differences between SVN and Git, outlines the git‑svn bridge commands, and describes a self‑service migration architecture that enables large‑scale, stable migration of thousands of projects across multiple business units.
This guide explains how to set up Android project packaging paths, write Python upload scripts for fir.im and Pgyer, configure a Jenkinsfile with checkout, build, and upload stages, and define Jenkins global variables and parameters for automated CI/CD of mobile apps.
This article presents a detailed overview of the 58 Deployment System (USP), covering its evolution, Java‑based architecture, communication and deployment models, traffic management, one‑stop and parallel deployments, gray‑scale rollout, fast rollback, task‑driven workflow, and future direction within private‑cloud environments.
This article examines how Amazon revamped its organization, migrated from a monolithic to a micro‑service architecture, built unified tooling such as APOLLO, and automated its delivery pipeline, enabling thousands of deployments per day while also promoting a DevOps hackathon for practitioners.
This guide explains how to package a Spring Boot service, publish the artifact and startup script to remote hosts, and remotely start the service using Jenkins pipelines and SaltStack commands, covering preparation, Jenkins project setup, Jenkinsfile logic, and deployment logs.
This article presents a Java method that uses Apache POI to write data into XLSX files, detailing the implementation steps, code example, and practical considerations for generating test reports with Excel in automated testing environments.
This article introduces Fastmonkey, an open‑source iOS Monkey testing tool, outlines its key advantages, provides step‑by‑step environment setup, explains bundle‑id and runtime configuration, details optional and custom actions, and describes how to execute tests and view logs.
The article presents a scalable ESLint‑based framework for large front‑end teams that combines a layered, unified rule configuration, CI/CD and pre‑commit lint checks, a one‑click onboarding CLI, and automated metrics collection with dashboards, enabling consistent code standards across diverse projects while reducing maintenance overhead.
The article outlines how to automate the end‑to‑end mobile app packaging workflow—from code submission and continuous integration to data collection, automated testing, and release management—highlighting the benefits of reducing manual effort, improving reliability, and enabling comprehensive historical package tracking.
This article shares practical experience using the Python wxpy library to automate WeChat, detailing outdated API challenges, custom wrapper functions for friends, groups, message recall, image sending, and Turing chatbot integration, along with code snippets and logging tips.
This guide explains how attackers can use shell scripts on a Linux server to modify, backup, and restore file timestamps—masking their activity—by leveraging tools like touch, stat, ls, and custom Bash scripts that automate the entire process.
This article introduces StackStorm as an event‑driven automation platform, explains its core components (sensors, triggers, rules, actions, workflows), details the structure and management of packs, and provides step‑by‑step instructions for installing, registering, and uninstalling packs.
This article presents a Groovy‑driven, modular API testing framework that automates login, token handling, and password‑change requests using multithreaded execution, and includes full source code for the test driver, UserCenter, and OkayBase classes.
This article presents a Groovy‑based modular framework for automating complex, interrelated API tests, detailing how to structure test modules, manage user credentials and tokens, and execute concurrent requests using custom thread handling, with full source code examples for the main driver, UserCenter, and base classes.
Learn a step‑by‑step Python solution to locate, download, and store high‑resolution, royalty‑free images from ColorHub by navigating its three‑tier page structure, generating request headers, parsing HTML with BeautifulSoup, and saving files locally, enabling offline PPT creation without copyright concerns.
This comprehensive guide explores Linux’s dominance in servers, outlines the various Linux‑related fields, details the responsibilities and classifications of Linux operations roles, lists essential tools and skills, and highlights the evolution and future trends for aspiring Linux ops professionals.
This article explains how to build a Groovy‑driven, modular API testing framework that logs in, obtains a token, and programmatically changes a user's password while handling concurrency and response validation.
This article explains how the ZhuangZhuang QA team builds and operates a remote device scheduling workflow on the MCP cloud testing platform, detailing the interaction between the automation test platform, MCP, and Agent services, and presenting three practical device allocation strategies for stable, scalable mobile automation.
At the 2019 DevOps International Summit in Beijing, Guangdong Mobile and Huawei unveiled their first carrier‑level DevOps deployment for 5G network elements, detailing the challenges of traditional rollout, the shift to X86‑based cloud infrastructure, and a step‑by‑step pipeline that cut deployment time by over 90%.
This guide presents a collection of practical Bash snippets for Linux administrators, covering random string generation, colored output, batch user creation, package and service checks, host ping testing, CPU/memory/disk monitoring, remote disk usage, website availability, and MySQL replication status verification.
The article explains how to evolve a microservice‑based transaction system’s testing framework from a simple all‑in‑one approach to a modular, aspect‑oriented architecture with separate action, assertion, and proxy layers, enabling scalable, reusable, and maintainable test cases across expanding business scenarios.
This guide explains how to configure ZenTao to trigger Jenkins builds automatically when tasks reach a designated status, covering Jenkins parameterized builds, webhook setup, integration testing, and practical tips for controlling builds based on task state.
This article details Tencent's online‑education mini‑program ecosystem, covering business matrix, native framework selection, engineering practices, audio/video integration, automated release pipelines, performance optimization through sub‑packages, and a comparison of WeChat and QQ mini‑program platforms.
This article explains how to structure modular Puppet code by configuring environments, creating reusable modules, and designing classes, covering environment paths, hiera data, module generation, publishing to the Forge, and key class functions such as include, require, contain, and hiera_include.
This tutorial walks you through creating a Python‑based GitHub monitoring tool that logs in, crawls code search results for sensitive keywords, extracts repository details, writes findings to CSV, and sends email alerts, providing a practical approach to detecting accidental source‑code leaks.
OpenKruise, announced at KubeCon Shanghai 2019, is Alibaba's open‑source cloud‑native automation engine that extends Kubernetes with custom controllers for deployment, upgrade, scaling, and sidecar management, offering in‑place updates, parallel upgrades, and a GitHub repository for community contributions.
This guide explains how to locate the Android SDK path in Jenkins, list available SDK components, upgrade a specific version of the tools and build‑tools, and verify the update so that Jenkins can successfully build Android APK packages after a toolchain upgrade.
This article introduces a macOS app that automatically generates all required icon and launch image sizes for various platforms, outlines its key features, lists the supported platform rules, describes the user interface, and provides a step‑by‑step guide for preparing source images, selecting platforms, choosing export paths, and exporting the assets.
This guide consolidates best‑practice conventions for writing readable, maintainable, and efficient shell scripts, covering shebang usage, commenting, parameter validation, variable naming, indentation, quoting, function structuring, scope handling, heredocs, path resolution, performance tricks, parallel execution, and static analysis with ShellCheck.
This article compiles the most common shell script interview questions, providing clear explanations of script basics, variable types, redirection, control structures, special variables, file testing, arithmetic, functions, and debugging techniques to help candidates master Linux automation.
This article explains how a frontend team migrated from SVN to GitLab, leveraged GitLab CI/CD to automate building and publishing HTML assets, outlines the previous manual workflow, details the new CI/CD pipeline, runner configuration, .gitlab-ci.yml structure, encountered issues, and future improvements.
Alibaba’s AI Lab introduces AutoAI, a fully managed AutoML platform that automates data production, model training, and deployment, reducing human effort, improving efficiency, ensuring data security, and enabling one‑click model training across NLP, speech, and vision applications.
The Replay Comparison Engine built by Youzan captures live online requests, replays them against a staging environment, automatically compares responses to spot regression errors, and provides a configurable SDK, server and console that dramatically cut testing cost while boosting coverage and efficiency across its SaaS services.
This article explains what large‑scale website operations entail, outlines the product lifecycle and the crucial role of operations engineers, lists essential technical skills and personal qualities, and discusses current challenges, future prospects, and key technical topics such as cluster management, monitoring, fault handling, and automation.
The iQIYI testing team created a high‑stability, low‑latency iOS remote‑control platform by extending WebDriverAgent with native gesture and screenshot APIs, deploying a Mac‑mini‑based device pool for parallel testing, and adding AI‑driven UI anomaly detection, performance logging, and crash‑monitoring services to enable scalable automated and Monkey testing.
Bianque, TDSQL’s intelligent operation platform, automatically collects and indexes database metrics, applies a knowledge‑base‑driven analysis engine to diagnose availability, performance and reliability issues, issue risk warnings and optimization recommendations, dramatically cutting DBA effort and support tickets across Tencent’s cloud services.
This article shares a small team’s step‑by‑step journey from basic monitoring to fully automated CI/CD pipelines, detailing why Prometheus was chosen, how Ansible and GitLab integrate with Jenkins, and tips for configuration versioning, alerting, and scaling the setup.
This guide introduces HttpRunner, covering supported operating systems, Python environment setup, installation via pip, key commands, parameter correlation, global configuration, variable handling, data‑driven testing, report generation, and a practical workflow using HAR files to create and run test cases.
Learn how to use the netcat (nc) command together with simple shell scripts to efficiently check whether one or multiple ports are open across a list of servers, eliminating manual checks and speeding up network diagnostics for both single‑port and multi‑port scans.
This guide walks through installing SaltStack components (salt‑master, salt‑minion, and salt‑api) on CentOS, configuring them, testing the API, and then integrating SaltStack with Jenkins by creating Jenkinsfiles that invoke Salt commands via the API or direct CLI for automated deployments.
This article compiles the most frequently asked shell script interview questions, providing clear explanations, essential concepts, and practical code examples to help Linux and cloud engineers master scripting for automation, debugging, and system administration tasks.
This article presents the goals, methods, and evolution of Qunar's operations team in reducing application failures, improving reliability through fault definition, rapid repair, automation, and AIOps-driven fault prediction, while sharing lessons from industrial PHM and outlining future challenges.
This article explains how CI/CD transforms software release practices by detailing continuous integration, delivery, and deployment, describing their benefits, challenges, and common tools such as Jenkins, while highlighting the role of pipelines and cloud environments in modern DevOps workflows.
Facing a legacy .NET and Oracle‑based vendor system serving ten countries, a global bank doubled release frequency and halved failures by separating small data‑patch deployments from monthly releases, automating testing and deployment with Jenkins, GitHub, and custom scripts, and aligning release windows to regional business hours.
This comprehensive guide walks new MacBook users through hardware upgrades, system preferences, essential shortcuts, and a curated list of productivity apps—including window managers, terminal enhancements, and development tools—to create an efficient and customized working environment.
Learn how to use Python, wxpy, and a timer to automatically fetch a daily quote and send personalized good‑morning or good‑night messages to a WeChat contact, complete with code examples and deployment tips.
This article explains how to automate repetitive remote‑server tasks such as directory navigation, script execution, and file transfer by using the pure‑Java JSch library to establish SSH connections, run shell commands, and perform uploads and downloads programmatically.
This article explains how to transform a traditional monolithic setup into a fully automated, cloud‑native microservice architecture using Docker containerization, Consul for service discovery and configuration, and HAProxy for dynamic DNS‑based routing, detailing the challenges, solutions, and practical configuration examples.
This article introduces GSIL, a near‑real‑time GitHub sensitive‑information‑leakage monitoring tool, and provides step‑by‑step instructions for installing the Python package, configuring email and GitHub token settings, defining scanning rules, and scheduling automated scans and reports via cron.
Developers can boost efficiency by using Excel to concatenate column values into SQL IN clauses or C# List syntax, locate duplicate entries, split cell contents by delimiters, and permanently disable automatic hyperlink creation, with step‑by‑step visual guides illustrating each technique.
This article examines the evolution of enterprise operations from manual processes to automated workflows, outlines current challenges and requirements, details standardization and management frameworks, compares leading open‑source automation tools, and presents a comprehensive design for an automated operations platform based on ITIL principles.
This guide outlines the career stages, skill sets, and practical tasks for DevOps engineers—from entry‑level troubleshooting to senior‑level architecture, automation, and performance optimization—providing concrete learning paths, tools, and personal development advice to help engineers advance their operations careers.
This article introduces Ctrip Hotel's automated comparison platform, detailing its motivation, overall architecture, and the four modules—interface, database, tracing, and cache comparison—along with configuration, execution methods, and results, highlighting its impact on testing efficiency and scalability.
This article explains what Android's Monkey tool is, its testing goals, commonly used command‑line options, how to run a test sending random events to an app, and how to collect and analyze the resulting logs for stability assessment.
This article compiles 22 DevOps predictions from XebiaLabs, G20Group, and Veritis, highlighting trends such as continuous integration pipelines, value‑stream mapping, real‑time data mining, shared responsibility culture, self‑service deployment, DevSecOps, AI‑driven automation, containerization, FaaS, and the growing importance of automation and security in software delivery.
This article introduces Puppet, an open‑source configuration‑management framework, explains its architecture and workflow, and provides step‑by‑step instructions for installing and configuring master, CA, and agent nodes, along with a detailed overview of the puppet.conf settings and common resource types for large‑scale server automation.
The article examines why test coverage matters, how Google and Facebook approach automated testing, the cultural emphasis on code ownership, and the practical limits of achieving 100% coverage in large-scale software projects.
This article explains how to use a Python script to automatically delete outdated images from a private Harbor registry, detailing the background, approach, deletion workflow, current limitations, and providing the full source code for easy adaptation.
This article explains how to transform a traditional monolithic deployment into a fully automated micro‑services environment by containerizing services, using Consul for dynamic service discovery and configuration, and configuring HAProxy with DNS resolvers to achieve seamless load balancing and zero‑downtime updates.
This guide outlines a step‑by‑step career roadmap for operations engineers, covering early‑stage tasks, essential Linux and networking skills, intermediate responsibilities like clustering and monitoring, and senior‑level challenges such as large‑scale automation, containerization, performance tuning, and security hardening.
The article describes a comprehensive CI/CD platform built on Jenkins and JBPM that streamlines compilation, process control, and external system integration for a large‑scale, plugin‑driven mobile app, addressing challenges such as build speed, code download, and task tracking.
The article explains how many companies struggle with inefficient DevOps communication and proposes a solution based on process, standardization, automation, and platformization, culminating in a lightweight Kubernetes‑based PaaS that reduces operational workload and improves reliability.
Learn how to use Python's wxpy library to create a WeChat bot that automatically sends personalized greetings, holiday wishes, birthday messages, and English learning prompts to your girlfriend at scheduled times, while also performing simple sentiment analysis of her replies.
This article details the design and implementation of an automated system to capture app advertisements, reducing manual effort and improving efficiency.
This article explores the full spectrum of modern operations, covering environment deployment, troubleshooting, backup, high availability, monitoring, security, automation, virtualization, and cloud services, while highlighting essential tools and best practices for both Linux and Windows environments.
This article explains how UCloud integrates Ansible with GlobalSSH to streamline overseas multi‑data‑center deployments, presents step‑by‑step Playbook examples, and shows performance tests that demonstrate up to a 57% speed boost for both Playbook and Ad‑hoc operations.
Reflecting on a decade of AWS, this article shares ten hard‑earned lessons—from building evolvable systems and anticipating failures to prioritizing security, automation, and open platforms—that guide the design, operation, and scaling of cloud services for today’s enterprises.
This article explains the evolution of Linux device management, introduces udev’s architecture and key features, details rule file syntax and operators, and provides practical examples—including disabling VXLAN offload, setting I/O scheduler, and enabling SR‑IOV—complete with command‑line snippets.
This article provides a comprehensive overview of Jenkins, covering its definition, key features, historical evolution from Hudson, and detailed descriptions of its web UI components such as management, project, and build pages, as well as project types, parameters, and triggers.
