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I have created a node app with local persistent storage in a .json file. It works fine running locally, but when I deploy it to heroku the persistent storage is modified, but then erased.

I have created a node app with local persistent storage in a .json file. It works fine running locally, but when I deploy it to heroku the persistent storage is modified, but then erased.

• javascript
• node.js
• heroku
• local-storage

Share Improve this question Follow edited Mar 14, 2017 at 0:04 Someone asked Mar 13, 2017 at 23:44 SomeoneSomeone 87222 gold badges88 silver badges2727 bronze badges 1

• What kind of local persistence? If you mean on the server then yes. That's how Heroku works, you need to install an addin – Paul Commented Mar 13, 2017 at 23:47

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Heroku does not provide any sort of persistent storage on dynos. If you need to persist files across sessions, you must use object storage such as Amazon S3.

https://devcenter.heroku./articles/dynos#ephemeral-filesystem

You can also setup Active Storage using Amazon S3 as @Max Woolf's explanation stated, but you can also store in a persistent instance of a relational database like postgres or Amazon RDS, which would be available on heroku as a plugin instead of using a json file.

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