A lightweight, concurrent HTTP load testing tool built in Go. This project was completed as part of the Coding Challenges - Build Your Own Load Tester.

1. Install Go (version 1.16 or higher)

   # For Ubuntu/Debian sudo apt-get install golang-go # For MacOS brew install go # For Windows # Download from https://go.dev/dl/

2. Clone the repository

   git clone [your-repository-url] cd [repository-name]

Test a single endpoint:

go run . -u https://api.example.com

Send 100 concurrent POST requests with a JSON payload:

go run . -u https://api.example.com/users \ -m POST \ -bd '{"name": "test"}' \ -c 100

Test multiple endpoints defined in a file with 10 concurrent requests:

go run . -f urls.txt -c 10 -n 5

-u URL to test (required if not using -f) -m HTTP method (GET, POST, PUT, PATCH, DELETE) -bd Request body for POST/PUT/PATCH methods -n Number of requests per URL (default: 1) -c Number of concurrent requests (default: 1) -f File containing URLs to test 

GET https://api.example.com POST https://api.example.com/users {"name": "test"} PUT https://api.example.com/users/1 {"name": "updated"} DELETE https://api.example.com/users/1 

• Concurrent request execution using Go routines
• Support for all standard HTTP methods (GET, POST, PUT, PATCH, DELETE)
• URL validation and sanitization
• Batch processing from file input
• Configurable request concurrency and count

• Request timing analysis
  • Total request time
  • Time to First Byte (TTFB)
  • Time to Last Byte (TTLB)
• Response statistics
  • Success/failure rate
  • Status code distribution
  • Request per second calculation
• Performance summary
  • Min/Max/Mean timing calculations
  • Concurrent request handling stats
  • Error rate analysis

• Network error detection
• Invalid URL detection
• Malformed request handling
• Connection timeout management