Hi Folks, Sorry if this has been asked before, but can anybody advise on FSSession vs SQLSession for: a) Speed. b) Scalability. Planned architecture employs multiple Zope/Apache frontline servers: +-----+ | Z/A |---+ +-----+ | | +-----+ | | Z/A |---+ +----- DB1 +-----+ | | |------| +-----+ | | | Z/A |---+ +----- DB2 (optional) +-----+ | | | Etc, etc. Z/A = 'front line' webservers running Zope/Apache. Contains application/business logic. We are NOT using the ZODB for data storage. DB1 = Data storage. eg. Oracle/Postgres DB2 = potentially just for managing the sessions, if we use SQLSession. Would MySQL be best ? Just how scalable can it really get ? We need it to at least be able to scale to 12 million sessions per day (and substant- -ially more writes to DB1 per day), even if we will be starting out much more modestly than that. Realistically, should I be looking at something like ATG Dynamo instead ? Thank you very much, chas