It is possible with ZEO. If you have one machine, try to implement squid as reverse caching proxy and think about ESI (www.esi.org) JL : Odesílatel: GIROTTO Diego (ESPIN) <diego.girotto@espin.it> Hy, is there anyone than can tell me any link or documentation about a generic Zope site (with or without CMF) performance with 1 milion of concurrenty users? In other ways, are Zope perfomance comparable with any other application server for enterprise portals solutions?