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I’m currently storing a fair amount of data in the $_SESSION variable. I’m doing this so I don’t need to keep accessing the database.
Should I be worried about memory issues on a shared server?
Can servers cope with large amounts of data stored in the $_SESSION variable?
Yes – session data is loaded into the script’s memory on every request. Hence, you are at risk of breaking the individual per-script memory limit. Even if you don’t hit the limit, this is really inefficient.
Accessing data from the database on demand is much better.