[Zope-dev] Specialist/Rack scalability

Michael Bernstein webmaven@lvcm.com
Mon, 22 Jan 2001 22:39:08 -0800


"Phillip J. Eby" wrote:
> 
> Just to expand a little on the abov...  Racks should scale at least as
> well, if not larger than a ZCatalog, given the same storage backing for the
> ZODB.  This is because ZCatalog has to manage a minimum of one forward and
> reverse BTree for *each* index, plus another few BTrees for overall storage
> and housekeeping.  Also, keyword and full text indexes store multiple BTree
> entries per object, so that's a factor as well.
> 
> So don't worry about the Rack.  If you're using a Rack, you can store the
> data anywhere, and you can index it in an RDBMS, LDAP directory, ZCatalog,
> or some combination thereof, using triggers to keep the data in sync.

Thanks Philip, that's reassuring. I guess now I need to make
certain that the ZCatalog can scale as far as I need it to.

Michael Bernstein.