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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
This problem can be solved by using a "session store" library such as connect-redis (see express-session's documentation for the list of session store libraries for Express.js). The idea is to keep session tokens in a dedicated database, and each time the user makes an HTTP request with their session token, the server receiving the request will consult this database to learn whether the request comes from the authenticated user or not. Performance suffers consequently, as retrieving data from a database always takes some time.