rakyll/hey
Hey
This project is a command-line utility designed for HTTP load testing and network stress testing. It functions as a benchmarking tool that generates high volumes of concurrent traffic to evaluate the performance, reliability, and throughput capacity of web applications and APIs under sustained load.
The tool allows for precise control over traffic generation by enabling users to configure request parameters, including custom headers, authentication credentials, and specific HTTP methods. It manages load through a worker-pool system that regulates request frequency, allowing for both time-bound tests and fixed-request benchmarking to observe system behavior under varying levels of network demand.
Upon completion of a test, the utility performs statistical aggregation to report performance metrics such as response latency, distribution percentiles, and success rates. These results can be exported into structured formats to facilitate the analysis of server infrastructure and the identification of performance bottlenecks.
The software is distributed as a static binary, ensuring consistent execution across different operating systems and computing environments.
Features
- Load Testing Tools - Generates concurrent HTTP traffic to measure web server performance, latency, and throughput under stress.
- Performance Benchmarking - Executes configurable HTTP requests to analyze response statistics and system stability as a primary benchmarking tool.
- API Testing - Validates API stability and reliability under high-concurrency authenticated stress.
- Workload Stress Testers - Simulates high-volume client activity to evaluate the capacity and reliability of web applications and APIs.
- Latency Histograms - Aggregates response time data to calculate performance percentiles and latency distributions.
- Infrastructure Tools - Micro-tool for sending load to web applications.
- Command Line Tools - Listed in the “Command Line Tools” section of the The Book Of Secret Knowledge awesome list.
- Developer Tools - Tool for performing load and stress testing.
- Load Testing Tools - Modern HTTP load generator and ApacheBench replacement.
- HTTP Security - HTTP load generator and ApacheBench replacement.
- Static Binaries - Distributes as a self-contained static binary to ensure consistent execution across environments.
- HTTP Servers - Generates high-volume concurrent HTTP load on target servers to measure throughput.
- Traffic Throttling - Throttles request throughput per worker to control traffic volume during testing.
- Network Traffic Analyzers - Analyzes traffic statistics to report latency, distribution, and success rates.
- Worker Pool Models - Manages load using a worker-pool model to regulate request frequency and concurrency.
- Application Layer Load Balancing - Sends concurrent requests to measure application performance over a set duration.
- Goroutine Pools - Uses lightweight goroutines to manage high-concurrency network request execution.
- API Request Authentication - Injects authentication credentials into request headers to test protected endpoints.
- Download Throughput Controls - Provides configurable controls for managing request concurrency and throughput during network load testing operations.
- Parallel Network I/O - Employs asynchronous I/O to handle high-throughput network traffic efficiently.
- Test Execution Controls - Supports time-bound test execution to observe system stability under sustained load.
