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Starter for FastAPI

This repo is nothing more than instructions for the first level of a FastAPI app. Fork the repo.

Installation Instructions

Application

Setup the application based on the FastAPI docs. Prepare one GET route for /status and have it return {'message': 'System is healthy'}

Locust

Use the documentation to prepare a locustfile.py that calls the /status endpoint.

Testing

Record Keeping

Each individual computer will have different results, but there should be consistency in the ratios between all engineers. Keep track of all settings and results.

Single Worker

Run fastapi dev <python file> in a terminal.

Run locust --processes 4 in another terminal and open the web interface at http://0.0.0.0:8089.

Set locust to:

  • 60 users
  • 10 ramp up
  • Host will be what FastAPI told you (probably http://127.0.0.1:8000)
  • Under advanced settings type 30s.

Record results, specifically: # of Requests, Fails, 95 percentile, Average, Max, and Current RPS.

Multiple Workers

NOTE: If you select "New" from the interface it will put the two runs next to each other (great for later tests).

Run gunicorn app:<python file, no extension> -b 127.0.0.1:8000 --pythonpath app -k uvicorn.workers.UvicornWorker -w 4

Run locust --processes 4 in another terminal and open the web interface at http://0.0.0.0:8089.

Set locust to:

  • 60 users
  • 10 ramp up
  • Host will be what FastAPI told you (probably http://127.0.0.1:8000)
  • Under advanced settings type 30s.

Record results, specifically: # of Requests, Fails, 95 percentile, Average, Max, and Current RPS.

Experiment

Try any other combinations you think may be interesting.