On Fri, 13 Jul 2007, Vampire D wrote: > We will not be using LDAP in the traditional sense. > > Instead of authentication, we will be using it to perform lookups upon > incoming mail. > We plan on having tens of thousands of email addresses stored in LDAP, every > message that comes in is verified via LDAP that it is allowed, and then it > is processed by our system. We plan on caching entries (positive and > negative) for 24 hours, so as long as the look up has been done in the last > 24 hours and the 1M record cache isn't exhausted it will not perform a look > up. This should cut down a lot of the demand. Initially we are looking at > about 100k lookups an hour, as we expand the service that can go up by > 50-100k at a time. Lots of people (myself included) use LDAP for this, among other things. Fedora DS will not blink at 100K searches per hour. I have seen 50-80K ops/minute on our LDAP servers, which are HP DL145s with 2 cores and 4 Gb memory, without any performance degradation, and I've spoken with people doing far more than that on comparable hardware. At the rates you're talking about, performance will be a non-issue. Chris St. Pierre Unix Systems Administrator Nebraska Wesleyan University ---------------------------- LOPSA Sysadmin Days: Professional Training for Professional SysAdmins August 6-7, Cherry Hill, NJ http://lopsa.org/SysadminDays
