Cache: nb of groups too high on JahiaContainerManagerCache

On my 30'000 pages DB, I launched a stress test of 20 different LDAP users on only 60 pages (the pid 60 to 120)... I did 52 times the run each LDAP users only hitting 25 pages and switching to the next LDAP user. I login with 140 different LDAP users.

Only on these 60 pages and these 140 LDAP users, this is the group status of this cache:

JahiaContainerManagerCache : Jahia container manager cache
303 entries
Successful cache hits : 282629 / 282753 total, Efficiency : 99.96 % Number of groups : 4242

My default limit is fixed at 10'000 and I am quite rapidly reaching this limit... The group key combination is too large in order to be useful...