vegeta

HTTP load testing tool

TLDR

Attack endpoint

$ echo "GET http://localhost:8080/" | vegeta attack -rate=[50] | vegeta report

Attack with duration

$ echo "GET http://localhost/" | vegeta attack -rate=[100] -duration=[30s] | vegeta report

Plot results

$ vegeta attack ... | vegeta plot > [results.html]

Encode to JSON

$ vegeta attack ... | vegeta encode --to=json

From targets file

$ vegeta attack -targets=[targets.txt] -rate=[10]

POST request

$ echo "POST http://localhost/api" | vegeta attack -body=[data.json]

vegeta is an HTTP load testing tool that sends requests at a constant, configurable rate. The attack command generates traffic and streams binary results to stdout, which can be piped to report for statistical analysis or plot for HTML visualization.This pipeline design allows flexible composition of load test workflows. Target definitions support multiple endpoints, HTTP methods, headers, and request bodies. Reports include latency percentiles, success rates, and throughput metrics, making it straightforward to identify performance regressions and capacity limits.

PARAMETERS

attack

Send requests.

report

Generate report.

plot

HTML plot.

encode

Convert format.

-rate N

Requests per second.

-duration D

Attack duration.

-targets FILE

Targets file.

-body FILE

Request body.

-header H

HTTP header.

INSTALL

sudo pacman -S vegeta

sudo zypper install vegeta

brew install vegeta

nix profile install nixpkgs#vegeta

CAVEATS

High rates need tuning. System limits may apply. Target server must handle load.

HISTORY

Vegeta was created by Tomás Senart for HTTP load testing. Named after the Dragon Ball character, it emphasizes power and speed.