Demo application to show some concept of perf&scale work on microservices.
Start DB:
podman run -d --name postgresql_database -e POSTGRESQL_USER=user -e POSTGRESQL_PASSWORD=pass -e POSTGRESQL_DATABASE=db -p 5432:5432 quay.io/centos7/postgresql-13-centos7
Setup terminal environment with what you need to run the app:
python -m venv venv
source venv/bin/activate
pip install -U pip
pip install -r requirements.txt
export FLASK_APP=myapp.py
export FLASK_ENV=development
export POSTGRESQL_HOST=localhost
export POSTGRESQL_PORT=5432
export POSTGRESQL_USER=user
export POSTGRESQL_PASSWORD=pass
export POSTGRESQL_DATABASE=db
Initialize DB and create some testing data:
flask db upgrade
flask test-data
And finally this will get you the server running on http://127.0.0.1:5000/:
flask run
Handy command to look into the DB:
PGPASSWORD=$POSTGRESQL_PASSWORD psql --host=$POSTGRESQL_HOST --username=$POSTGRESQL_USER --port=$POSTGRESQL_PORT $POSTGRESQL_DATABASE
Image should be available form quay.io repo:
podman pull quay.io/rhcloudperfscale/perfscale-demo-app
BUt if you want to build the image locally from git repo:
sudo podman build -t perfscale-demo-app .
And to run it:
podman run --rm -ti -p 5000:5000 perfscale-demo-app
To test basic functionality, ensure you do not have some server listening on port 5000 and run:
./tests.sh
To run API perf-test:
locust --locustfile testing.py --headless --users 1 --spawn-rate 1 -H http://localhost:5000 --run-time 3 --print-stats --only-summary
Or when deployed in OCP:
locust --locustfile testing.py --headless --users 10 --spawn-rate 10 -H http://perfscale-demo-service.perfscale-demo-app.svc --run-time 3 --print-stats --only-summary