Frankly, I'm at present using back-ldap with proxycache over ldapi for postfix authentication and mailrouting, the uptime is now 38 days.I must admit that it is an elder HEAD version. But even with 2.1.13 back-meta with a few rewriting rules was rock stable, but without proxycache at that time. While back-ldap has about 4 search requests per minute, the server (2.2.14) answers more than 40 search requests per minute, as it primarily supports pam and an addressbook.
Daniel
-- /\\\----------------------------------------------------------------------///\ \ \\\ Daniel Henninger http://www.vorpalcloud.org/ /// / \_\\\ North Carolina State University - Systems Programmer ///_/ \\\ Information Technology <IT> /// """--------------------------------------------------------------"""