Persistent Storage in Kubernetes Cluster ?

In my project for example I write a JSON file using python will the JSON file data be stored or deleted after the dyno restarts? I don’t have a clue about the Kubernetes cluster and was wondering will the JSON file be lost after a dyno restart similar to Heroku. Or is Kubernetes Completely Different?

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What I would personally do is to use an object storage to store such files persistently. You could use the DigitalOcean Spaces for that:

Alternatively, you could use a PVC with a block storage as described here:

Hope that this helps. Regards, Bobby