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javascript - Socket.io and Heroku: can the app save collaborative writing results?

I want to code a collaborative writing project that "lives" online. One user types something and if the next user comes to the website next day, they can see the latest text (or part of the text, I'm still planning how to process the texts) and the visuals triggered by this latest text.

I know how to build a collaborative drawing or writing tool with Node.js and Socket.io. However, I'm a newbie with Heroku and trying to understand how its dynos work. Basically my question is: will the process be wiped away by dynos at some point?

I would want the project to live for months, so that each user can see what the previous user has created.

Apologies if this not the right forum for this kind of questions.


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