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swarm/app.py

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+from flask import Flask
+from redis import Redis
+
+app = Flask(__name__)
+redis = Redis(host='redis', port=6379)
+
+@app.route('/')
+def hello():
+    count = redis.incr('hits')
+    return 'Hello World! I have been seen {} times.\n'.format(count)
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=8000, debug=True)