I have one question. How appropriate is to use on shared hosting a cache system for data?
I mean as far as I know the data is written in a shared data cache (not private for each user) across all users. And on a busy server other users will have access to my cached data. And the situation can get even worse, by mistake diff users may have same application and so the data may get overwrite by other user, etc.
So, I am wrong or a data cache is not recommended for shared environments because of privacy issue?