Sample WSGI web server with Flask

wsgi.py

# gunicorn --bind 0.0.0.0:8000 --workers 4 wsgi:app
# gunicorn --bind 0.0.0.0:8000 --workers 1 --threads 12 wsgi:app

import time
from flask import Flask

app = Flask(__name__)

# Requests from one client are not blocked by long-lasting requests from another client, as long as there are workers available
@app.route('/sleep')
def sleep():
    time.sleep(10)
    return 'I slept for 10 seconds...'

@app.route('/hello')
def hello():
    return 'Hello Flask!'

if __name__ == '__main__':
    app.run()