Benoit Sautel <firstname.lastname@example.org>,
Loic Rouchon <email@example.com>
This data store is not already available, the APC PHP extension must be enabled
for you yo use it. When it's available, it provides a memory area that is
persistent (its life span is no the page execution) and shared by all
simultaneous page executions. This is very efficient and has an infinite life
span (in fact it's the Web server's one).