$ tldr k6

  Open source load testing tool and SaaS for engineering teams.
  More information: <https://k6.io>.

  Run load test locally:

      k6 run script.js

  Run load test locally with a given number of virtual users and duration:

      k6 run --vus 10 --duration 30s script.js

  Run load test locally with a given environment variable:

      k6 run -e HOSTNAME=example.com script.js

  Run load test locally using InfluxDB to store results:

      k6 run --out influxdb=http://localhost:8086/k6db script.js

  Run load test locally and discard response bodies (significantly faster):

      k6 run --discard-response-bodies script.js

  Run load test locally using the base JavaScript compatibility mode (significantly faster):

      k6 run --compatibility-mode=base script.js

  Log in to cloud service using secret token:

      k6 login cloud --token secret

  Run load test on cloud infrastructure:

      k6 cloud script.js