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DevOps

Docker Cheatsheet

Containerization platform to build, ship, and run applications consistently across environments.

Enterprise-ready Docker commands, patterns, and best practices for development and production environments

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Automation

CSS Selectors Strategies Cheatsheet

CSS selectors offer fast, readable, and browser-native strategies to reliably locate elements in modern UI automation.

Production-ready CSS selectors cheatsheet for UI automation with basic to advanced strategies and real-world examples.

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Web

Complete XPath Cheatsheet

XPath is a query language used to locate and navigate elements in HTML and XML documents.

Complete generic XPath reference with real-world patterns and examples for locating elements in HTML and XML

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Git

GitHub Webhooks - Reference

Event notification system that triggers HTTP callbacks when repository events occur on GitHub.

Security headers, events, testing, and setup guide for GitHub webhooks

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Testing

Java Excel Utility - Comprehensive

Apache POI-based utility for reading and writing Excel files (.xlsx, .xls) with support for data-driven testing.

Production-ready Excel utility class with read/write operations, cell styling, and data manipulation for test automation

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Git

GitHub Webhooks - Node.js

Event notification system that triggers HTTP callbacks when repository events occur on GitHub.

Node.js Express and vanilla implementations for GitHub webhooks with signature verification

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Testing

K6 Load Testing Cheatsheet

Modern load testing tool using JavaScript to test API, microservices, and website performance at scale.

Enterprise-ready K6 performance testing cheatsheet with commands, scripts, thresholds, and CI usage

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Git

GitHub Webhooks - Java

Event notification system that triggers HTTP callbacks when repository events occur on GitHub.

Java Spring Boot implementation for GitHub webhooks with signature verification and deployment

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Testing

Java Selenium - ScreenshotUtil

Reusable Java utility for capturing browser, element, and failure screenshots in Selenium-based automation frameworks.

Reusable ScreenshotUtil implementation for capturing browser, element, and failure screenshots in Selenium automation

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Git

GitHub Webhooks - PHP

Event notification system that triggers HTTP callbacks when repository events occur on GitHub.

PHP native implementation for GitHub webhooks with signature verification and deployment

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Testing

K6 Testing Snippets

Modern load testing tool using JavaScript to test API, microservices, and website performance at scale.

Ready-to-use K6 load testing scripts for common API testing scenarios with example outputs and performance metrics

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Certificate

Let's Encrypt - Certificates

Free, automated certificate authority providing SSL/TLS certificates for securing websites with HTTPS.

Issue, renew, and manage SSL certificates with Let's Encrypt and Certbot

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Certificate

Let's Encrypt - Installation

Free, automated certificate authority providing SSL/TLS certificates for securing websites with HTTPS.

Install Certbot and configure Let's Encrypt SSL certificate tool

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Maven

Maven Proxy Configuration

Build automation and dependency management tool for Java projects with powerful lifecycle management.

Configure Maven Proxy to download maven dependencies behind organization's proxy.

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Certificate

Let's Encrypt - Advanced

Free, automated certificate authority providing SSL/TLS certificates for securing websites with HTTPS.

Advanced Let's Encrypt features including Docker, monitoring, best practices, and production deployment

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Certificate

Let's Encrypt - Troubleshooting

Free, automated certificate authority providing SSL/TLS certificates for securing websites with HTTPS.

Common Let's Encrypt and Certbot errors with solutions and debugging steps

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Maven

Maven - Commands

Build automation and dependency management tool for Java projects with powerful lifecycle management.

Essential Maven commands for building, testing, and managing Java projects

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Maven

Maven Useful Commands

Build automation and dependency management tool for Java projects with powerful lifecycle management.

Maven commands to quickly get you going.

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DevOps

PM2 Cheatsheet

Production process manager for Node.js that keeps applications alive, enables load balancing, and provides monitoring capabilities.

Production-ready PM2 commands and patterns for Node.js process management

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Testing

Selenium Java Basics - Cheatsheet

Selenium is a browser automation framework used to automate and test web applications across browsers.

Complete reference of Selenium WebDriver basic commands used in real-world automation projects

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Telegram Bot APIs

Bot platform and API for sending messages, photos, and files via automated Telegram bots.

Quick-access to Telegram Bot APIs plus common troubleshooting steps.

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Docker Cheatsheet

CSS Selectors Strategies Cheatsheet

Complete XPath Cheatsheet

GitHub Webhooks - Reference

Java Excel Utility - Comprehensive

GitHub Webhooks - Node.js

K6 Load Testing Cheatsheet

GitHub Webhooks - Java

Java Selenium - ScreenshotUtil

GitHub Webhooks - PHP

K6 Testing Snippets

Let's Encrypt - Certificates

Let's Encrypt - Installation

Maven Proxy Configuration

Let's Encrypt - Advanced

Let's Encrypt - Troubleshooting

Maven - Commands

Maven Useful Commands

PM2 Cheatsheet

Selenium Java Basics - Cheatsheet

Telegram Bot APIs

Find Your Tool

Saved tools

Docker Cheatsheet

CSS Selectors Strategies Cheatsheet

Complete XPath Cheatsheet

GitHub Webhooks - Reference

Java Excel Utility - Comprehensive

GitHub Webhooks - Node.js

K6 Load Testing Cheatsheet

GitHub Webhooks - Java

Java Selenium - ScreenshotUtil

GitHub Webhooks - PHP

K6 Testing Snippets

Let's Encrypt - Certificates

Let's Encrypt - Installation

Maven Proxy Configuration

Let's Encrypt - Advanced

Let's Encrypt - Troubleshooting

Maven - Commands

Maven Useful Commands

PM2 Cheatsheet

Selenium Java Basics - Cheatsheet

Telegram Bot APIs

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