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app.py

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    app.py 514 B
    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 World! I have been seen {} times.\n'.format(count)