is it possible to run BigMemory in a multi-tenant model already ?
Thus is it possible to specify "sub-caches" that are only accessible by different credentials ?
Yes it is possible to run Bigmemory in multi-tenant model from terracotta 3.6 release. ARC has been introduced in Terracotta 3.6 / Ehcache 2.5 release. You can go through below link for detail information on it: