URL PATH HASHING

I don't think you can do this. At least not from the server side. Only way to modify the url address would be through javascript or sending a redirect to a "hashed" url.

In an iRule, you could proxy requests from a hashed url to a different backend url. Difficulty there is that you'd need to do some custom rewriting of the response pages to make sure the links would point to the hashed url. Would be a little bit of a headache. If you wanted to consider this, you might want to check out the ProxyPass iRule.