Yes simple is a good thing, but you have to decide for yourself what risk and downtime is acceptable, how long to recover and how many writes is acceptable to lose.
E.g. Is a one daily backup acceptable for recovery (and you lose changes since then), or do you need every single write to the hour/minute ?
The more continously/frequently you write to both nodes, the more likely are sync errors, and also less recoverability of your bdb logs in the event of catastrophic power failure or inproper shutdown.
I dont think anyone can decide this for you.. You need to evaluate your level of risk and what loss / downtime is acceptable to you / your employer / your customers etc.,
Cheers Brett
-----Original Message----- From: Hideo NAKAMITSU nomo@bluecoara.net Sent: Monday, 29 June 2009 11:51 AM To: openldap-technical@openldap.org Subject: Re: MirrorMode VS load balancing
and how about 1write/sec, 10writes/sec, 50writes/sec, 100writes/sec... I want to know this threshold like,
- if writes happen 0-5/sec, it's 99% safe (at the worst unlucky case, only 2writes at the same time may break something) - 6-50/sec, may safe or not. - more than 50/sec, danger.