app.py

import time

import redis
from flask import Flask

app = Flask(__name__)
cache = redis.Redis(host='redis', port=6379)

def get_hit_count():
 retries = 5
 while True:
 try:
 return cache.incr('hits')
 except redis.exceptions.ConnectionError as exc:
 if retries == 0:
 raise exc
 retries -= 1
 time.sleep(0.5)

@app.route('/')
def hello():
 count = get_hit_count()
 return 'Hello Creator! I have been seen {} times.\n'.format(count)