This question is about a hypothetical in-memory web application that is used for exchanging encrypted messages that passively self-destruct in X amount of minutes.
Here the messages would be stored at the web app, and the intended recipient would receive a link through which they could access the message before it is erased from the server RAM.
The thought is that this web application would run from some read-only media (e.g. CD-ROM) and for that reason could not be altered.
We have in-memory databases but (AFAIK) no in-memory web applications. Would something like this be technologically (or otherwise) feasible?