GoPerf - Modern Load Testing Framework

A high-performance, concurrent website load testing tool with zero linter issues, clean architecture, and comprehensive automation. Built with modern Go practices and designed for production environments.

This is a complete modernization of the original gnulnx/goperf project, featuring clean architecture, dependency injection, comprehensive automation, and zero code quality issues.

🎯 Project Status

• Original Project: gnulnx/goperf
• This Fork: Gosayram/goperf
• Current Version: v0.1.0
• Code Quality: 🏆 Zero linter issues (150+ issues resolved)

🚀 What's New in This Fork

✨ Clean Architecture & Code Quality

• 🏆 Zero Linter Issues - Comprehensive code quality improvements (150+ issues resolved)
• 🏗️ Clean Architecture - SOLID principles with dependency injection
• 🔧 Interface-Driven Design - Easily extensible and testable components
• 📝 Professional Documentation - GoDoc comments for all exported functions
• 🚫 Zero Magic Numbers - All constants properly defined with descriptive names

🛠️ Modern Development Infrastructure

• 📦 Go Modules - Modern dependency management (Go 1.24+)
• 🏷️ Semantic Versioning - Proper release management with CHANGELOG.md
• 🔨 Professional Makefile - 50+ automation targets for development
• 🧪 Comprehensive Testing - Unit tests, benchmarks, and integration tests
• 🔍 Linter Integration - golangci-lint with zero tolerance for issues

🔒 Security & Reliability

• 🛡️ Security Audit Passed - Removed suspicious IPs and fake domains
• 🔐 Safe Defaults - localhost:8080 instead of suspicious external IPs
• ⚡ Resource Management - Proper HTTP body closure and error handling
• 🏃 Graceful Shutdown - Clean resource cleanup and signal handling

🎨 Enhanced Features

• ⚙️ Multi-Source Configuration - CLI flags, environment variables, config files
• 📊 Multiple Output Formats - JSON, CSV, HTML, plain text
• 📈 Advanced Load Testing - Stress testing, benchmark suites, custom scenarios
• 🌐 Web Interface - Browser-based testing dashboard
• 📋 Structured Logging - Better debugging and monitoring

📦 Quick Start

Installation

# Clone the repository
git clone https://github.com/Gosayram/goperf.git
cd goperf

# Quick build and run
make build
make version

Professional Development Setup

# Install development tools automatically
make install-tools

# Run comprehensive checks (formatting, linting, testing)
make check-all

# Build for multiple platforms
make build-cross

🎯 Usage Examples

Basic Load Testing

# Simple load test with Makefile automation
make load-test-quick

# Custom load test
./bin/goperf -url https://httpbin.org/get -users 10 -sec 30

# Stress testing
make load-test-stress

Advanced Testing Scenarios

# Comprehensive benchmark suite
make benchmark-app

# Test with different intensities
make load-test          # Standard test (10 users, 30s)
make load-test-quick    # Quick test (5 users, 10s)
make load-test-stress   # Stress test (50 users, 60s)

Development & Analysis

# Fetch and analyze single page
make run-fetch

# Start web server for browser testing
make run-web

# Development mode with auto-reload
make dev

🏗️ Architecture Overview

This modernized version follows clean architecture principles:

goperf/
├── cmd/                    # 🚀 Application entry point (46 lines vs 213 original)
│   └── main.go            # Clean main with dependency injection
├── core/                   # 🏗️ Core application logic
│   ├── app.go             # Application coordinator with graceful shutdown
│   ├── config.go          # Multi-source configuration management
│   ├── container.go       # Dependency injection container
│   └── constants.go       # Named constants (zero magic numbers)
├── interfaces/            # 🔌 Business logic contracts
│   ├── client.go          # HTTP client interface
│   ├── parser.go          # Asset parser interface  
│   ├── metrics.go         # Metrics collection interface
│   └── formatter.go       # Output formatting interface
├── implementations/       # 🛠️ Mock implementations for testing
├── httputils/            # 🌐 HTTP utilities with constants
├── perf/                 # 📊 Performance testing engine
├── request/              # 🔗 Request handling with proper constants
└── Makefile              # 🔨 50+ professional automation targets

🔨 Professional Makefile Automation

Our comprehensive Makefile provides 50+ automation targets:

Building & Running

make build              # Build for current platform
make build-cross        # Build for Linux, macOS, Windows
make run-load          # Quick load test
make run-web           # Start web interface

Code Quality

make check-all         # Comprehensive quality checks
make fmt               # Format code
make lint              # Run linter (zero issues guaranteed)
make vet               # Run go vet
make staticcheck       # Advanced static analysis

Testing & Benchmarking

make test              # Run all tests
make test-coverage     # Test with coverage report
make benchmark-app     # Performance benchmarks
make load-test-suite   # Complete load testing suite

Version Management

make version           # Show version info
make bump-patch        # Increment patch version
make bump-minor        # Increment minor version
make bump-major        # Increment major version

⚙️ Configuration Options

Command Line Interface

-url string         Target URL for testing
-users int          Number of concurrent users (default: 1)
-sec int            Test duration in seconds (default: 10)
-fetch              Fetch mode - analyze single request
-web                Start web server mode
-port int           Web server port (default: 8080)
-timeout duration   Request timeout (default: 30s)
-json               Output in JSON format
-verbose            Enable verbose logging

Environment Variables

export GOPERF_URL="https://example.com"
export GOPERF_USERS=50
export GOPERF_DURATION=60
export GOPERF_TIMEOUT=30s
export GOPERF_OUTPUT_FORMAT="json"

Configuration File Support

# goperf.yaml
target:
  url: "https://example.com"
  timeout: "30s"
load:
  users: 50
  duration: 60
output:
  format: "json"
  verbose: true
security:
  max_redirects: 10
  verify_ssl: true

📊 Features & Capabilities

Core Load Testing

• 🚀 High Concurrency - Leverages Go goroutines for maximum performance
• 🌐 Real Browser Simulation - Fetches CSS, JavaScript, and image assets
• 🍪 Session Management - Maintains cookies across requests
• 📈 Comprehensive Metrics - Latency, throughput, success rates
• 📊 Asset Analysis - Detailed breakdown of page resources

Output & Reporting

• 📋 Multiple Formats - JSON, CSV, HTML, plain text
• 📊 Detailed Metrics - Request/response times, byte counts, status codes
• 🎨 Color-Coded Output - Easy-to-read terminal output
• 📈 Performance Charts - Visual representation of results
• 📑 Export Options - Save results to files

Advanced Features

• 🔧 Dependency Injection - Modular, testable architecture
• 🧪 Mock Implementations - Built-in testing capabilities
• 🔄 Graceful Shutdown - Proper cleanup on interruption
• 🛡️ Error Handling - Comprehensive error management with context
• 📝 Structured Logging - Debug-friendly output with levels

🧪 Development & Testing

Quality Assurance

# Our zero-tolerance quality pipeline
make check-all          # Format + Vet + Lint + Staticcheck + Build + Test

# Individual quality checks
make fmt               # Code formatting
make imports           # Import organization  
make vet               # Go vet static analysis
make lint              # golangci-lint (zero issues)
make staticcheck       # Advanced static analysis

Testing Suite

# Comprehensive testing
make test              # Unit tests
make test-coverage     # Coverage report
make benchmark-app     # Performance benchmarks
make integration-test  # Integration tests

# Load testing suites
make load-test-quick   # 5 users, 10 seconds
make load-test         # 10 users, 30 seconds  
make load-test-stress  # 50 users, 60 seconds

Cross-Platform Building

# Build for all platforms
make build-cross

# Individual platform builds  
make build-linux
make build-windows
make build-darwin

📈 Performance Metrics

GoPerf provides comprehensive performance analysis:

• Response Times: Average, minimum, maximum latency
• Throughput: Requests per second across all users
• Success Rate: Percentage of successful requests
• Resource Usage: CPU, memory, network utilization
• Asset Breakdown: Individual timing for CSS, JS, images
• HTTP Status: Detailed status code distribution

🤝 Contributing

We welcome contributions! Our development process emphasizes code quality:

Development Workflow

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Make your changes with zero linter issues: make check-all
4. Add tests for new functionality
5. Update documentation as needed
6. Submit a pull request

Code Quality Standards

• 🏆 Zero linter issues - Use make lint before committing
• 📝 GoDoc comments - Document all exported functions
• 🚫 No magic numbers - Use named constants
• 🧪 Test coverage - Add tests for new features
• 📋 Professional documentation - Update README and CHANGELOG

Development Setup

# Setup development environment
git clone https://github.com/Gosayram/goperf.git
cd goperf

# Install tools and dependencies  
make install-tools
make deps

# Verify setup
make check-all
make build

📄 License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.

🙏 Acknowledgments

• Original Project: gnulnx/goperf - Foundation for this modernization
• Go Community: Best practices and modern development patterns
• Clean Architecture: Principles by Robert C. Martin
• Contributors: Community feedback and contributions

📊 Project Statistics

• Code Quality: 🏆 0 linter issues (resolved 150+ issues)
• Architecture: Clean architecture with 4 core interfaces
• Test Coverage: Comprehensive test suite with benchmarks
• Documentation: Professional GoDoc comments throughout
• Automation: 50+ Makefile targets for development workflow
• Platforms: Cross-platform builds (Linux, macOS, Windows)

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GoPerf v0.1.0 - Built with ❤️ for modern Go development. Zero compromises on code quality.

Ready for production use with enterprise-grade quality standards.