How to reset the website when the user leaves it, with vibe.d?

[vnr]

Hello 😊

I have a bit of a problem that seems simple enough, but I can't 
find an answer to my questions. On my website, I have two 
textareas that the user can write on. When the user reloads the 
page or closes it and then reopens it, the text he wrote is still 
written, which is quite annoying.

So my question is how to reset the website (the page) when the 
user reloads or quits.

I've looked at the vibe.d's sessions, because that's probably 
where the answer to my question lies, but from what I understand, 
it requires a "login and logout form" (at least, all the code 
examples do this), which I don't want, because I want the website 
to be accessible without logging in.

Do you have any ideas on how to fix this, probably with sessions?