Using Gevent in flask: API is not asynchronous

Question

Earlier I was using Waitress. Now I\'m using Gevent to run my Flask app that has only one API

from flask import Flask, request, jsonify
import documentUtil
fr         


        

Answer 1

Not sure, however I think adding thread param in server object can solve the problem.

http_server = WSGIServer(('127.0.0.1', 8000), app, numthreads=50)

source: https://f.gallai.re/wsgiserver

Answer 2

"""index.py"""

from flask import Flask
from flask import jsonify

app = Flask(__name__)


@app.route('/')
def index():
    """Main page"""
    doc = {
        'site': 'stackoverflow',
        'page_id': 6347182,
        'title': 'Using Gevent in flask'
    }
    return jsonify(doc)


# To start application
gunicorn -k gevent --bind 0.0.0.0 index:app

k : worker_class
--bind : bind address
# See https://docs.gunicorn.org/en/latest/settings.html

Answer 3

We use Gunicorn to run Flask in multiple processes. You get more juice out of python that way + auto restarts and stuff. Sample config file:

import multiprocessing

bind = "0.0.0.0:80"
workers = (multiprocessing.cpu_count() * 2) + 1
# ... additional config

Then run with something like

gunicorn --config /path/to/file application.app