# tsenart/vegeta

HTTP load testing tool and library. It's over 9000!

Repository: https://github.com/tsenart/vegeta
Canonical: https://ross.abutalabs.com/products/vegeta
Homepage: http://godoc.org/github.com/tsenart/vegeta/lib
Language: Go
License: MIT
License Family: permissive
Topics: load-testing, go, benchmarking, http
Last push: 2026-02-16T14:07:07+00:00

## Health v2 (maintenance only)
Score: 58/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 67, release rhythm 22, longevity 100
- inputs: {"age_days": 4768, "days_push": 198, "days_rel": 306, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 25166, forks 1421 (observed 2026-08-28T04:11:37.875924+00:00)

## What it is
Vegeta is a versatile HTTP load testing tool and Go library that drills HTTP services with a constant request rate. It is usable both as a UNIX-composable CLI and as an embeddable Go package, with extensive reporting and distributed load testing support.

## Use cases
- load test an HTTP API at a constant request rate
- benchmark endpoint latency and throughput
- run distributed load tests against a web service
- embed an HTTP attack generator in a Go program
- generate latency histograms and reports from load tests

## When to choose
- you need constant-rate HTTP load generation that avoids coordinated omission
- you want a single static binary that is easy to install and script
- you need both a CLI and a Go library for load testing
- you want rich reporting (text, histogram, JSON) from test results

## When to avoid
- you need protocol support beyond HTTP/1.1 and HTTP/2 (e.g. gRPC, WebSockets)
- you need scenario-based or user-journey load testing with complex scripting
- you need a GUI or record/replay proxy workflow

## Facets
- artifact type: cli-tool
- maturity: stable
- function: load-testing, benchmarking, http-client, cli
- domain: developer-tools, testing, performance, apis, web-development
- platform: windows, bsd, go, cli, cross-platform
- tags: http, stress-testing, go-library, constant-request-rate, coordinated-omission, linux, macos

## Member repositories
- tsenart/vegeta (main) score 58

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:37.875924+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 2026-08-29T16:56:05.732934+00:00, confidence not recorded.
  - readme: https://github.com/tsenart/vegeta (fetched 2026-08-28T04:11:37.875924+00:00, sha eb0aeffb3f57)
  - homepage: http://godoc.org/github.com/tsenart/vegeta/lib (fetched 2026-08-29T07:53:04.322277+00:00, sha 82cf623fbe75)
  - site_page: https://pkg.go.dev/about (fetched 2026-08-29T07:53:04.334632+00:00, sha 757852027879)
  - site_page: https://pkg.go.dev/github.com/tsenart/vegeta/lib (fetched 2026-08-29T07:53:04.332217+00:00, sha a5d999bde5d5)
  - site_page: https://go.dev/project (fetched 2026-08-29T07:53:04.336686+00:00, sha d5ca00bb378b)
- Data as of 2026-08-30T08:39:29.467469+00:00.