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Re: OpenLDAP for larger number of entries



Marcelo wrote:
Hi,

My organization works with public software, and we are interested in use
OpenLDAP to control close of 100,000,000 users. Is it a good idea? What kind
of database can we use? Is there some research that points what is the limit
for the volume of users?
Whether or not it is a good idea mostly depends on what you need to do with 
the data, and what software will be used to access it. If most of your apps 
already support LDAP then it's probably a good idea.
There are no capacity limits in OpenLDAP. We have tested back-bdb and back-hdb 
with over 5 billion users. No other directory server in the world has scaled 
to sizes like this while delivering useful performance.
The only limits are your own - your patience, and the performance of the 
machines you use to house the database. There are no secret tricks - good 
performance requires sufficient RAM and fast bandwidth to memory, disks, and 
network interfaces. Raw CPU performance is much less important here than 
aggregate bandwidth.
--
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/