# hatoo/oha

Ohayou(おはよう), HTTP load generator, inspired by rakyll/hey with tui animation.

Repository: https://github.com/hatoo/oha
Canonical: https://ross.abutalabs.com/products/oha
Language: Rust
License: MIT
License Family: permissive
Topics: rust, load-testing, benchmark, http, load-generator, command-line, cli, tui, http2
Last push: 2026-08-23T09:11:21+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 87, longevity 100
- inputs: {"age_days": 2375, "days_push": 10, "days_rel": 10, "gap_med": 41, "n_releases_24m": 14}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 10510, forks 295 (observed 2026-08-28T04:10:42.151109+00:00)

## What it is
oha is a small HTTP load generator written in Rust, inspired by rakyll/hey, that sends load to a web application and displays results in a realtime TUI animation. It supports HTTP/1, HTTP/2, experimental HTTP/3, and installs via cargo, package managers, or prebuilt binaries.

## Use cases
- load test my http api
- benchmark a web server from the command line
- stress test an endpoint with concurrent requests
- alternative to hey or ab for http load testing
- visualize request latency in a terminal while load testing
- test http2 performance of my service

## When to choose
- you want a fast, single-binary CLI load tester with a realtime TUI
- you need HTTP/2 or experimental HTTP/3 support in a load generator
- you prefer a hey-like tool written in Rust with active maintenance

## When to avoid
- you need distributed load generation across many machines
- you require scripted, complex test scenarios rather than simple request load
- you need a GUI or CI-friendly non-interactive reporting only

## Facets
- artifact type: cli-tool
- maturity: active
- function: load-testing, benchmarking, http-client, cli
- domain: developer-tools, performance, web-development, testing
- platform: windows, cli, rust
- tags: tui, http2, http3, load-generator, hey-alternative, command-line, linux, macos, docker

## Member repositories
- hatoo/oha (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:42.151109+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:18:57.088117+00:00, confidence not recorded.
  - readme: https://github.com/hatoo/oha (fetched 2026-08-28T04:10:42.151109+00:00, sha 511a451f8abb)
  - registry_crates: https://crates.io/api/v1/crates/oha (fetched 2026-08-29T08:17:53.051260+00:00, sha ac4aa0ac8860)
- Data as of 2026-08-30T08:39:29.467469+00:00.