Running Flask with Gunicorn

flask_gunicorn_app.py

# This gist shows how to integrate Flask into a 
# custom Gunicorn-WSGI application described
# here: http://docs.gunicorn.org/en/stable/custom.html

from __future__ import unicode_literals

import multiprocessing

import gunicorn.app.base

from gunicorn.six import iteritems

# Modification 0: import Flask modules
from flask import Flask, render_template, make_response, request, Response #etc

def number_of_workers():
    return (multiprocessing.cpu_count() * 2) + 1

# Modification 1: Define Flask app
app = Flask(__name__)

# Modification 2: Define your own Flask app routes and functions
@app.route('/')
def index():
    return render_template('index.html')

class StandaloneApplication(gunicorn.app.base.BaseApplication):

    def __init__(self, app, options=None):
        self.options = options or {}
        self.application = app
        super(StandaloneApplication, self).__init__()

    def load_config(self):
        config = dict([(key, value) for key, value in iteritems(self.options)
                       if key in self.cfg.settings and value is not None])
        for key, value in iteritems(config):
            self.cfg.set(key.lower(), value)

    def load(self):
        return self.application


if __name__ == '__main__':
    options = {
        'bind': '%s:%s' % ('127.0.0.1', '8080'),
        'workers': number_of_workers(),
    }
    # Modification 3: pass Flask app instead of handler_app
    StandaloneApplication(app, options).run()

Thank you very much! It works well.

Thank you.

Glad it has helped! Thanks for the feedback.

This should probably be in the main docs, thank you!

Thanks