[389-users] Read data immediately after write
Rich Megginson
rmeggins at redhat.com
Mon Oct 12 17:47:18 UTC 2009
Ankur Agarwal wrote:
> Can i use chaining between master-slave without having different "ou"?
> I mean if i have exactly same directory structure and same set of OUs
> can i still have chaining between master and slave?
>
Yes.
>
> Cheers,
> Ankur
>
>
> --- On *Thu, 10/8/09, Michael Ströder /<michael at stroeder.com>/* wrote:
>
>
> From: Michael Ströder <michael at stroeder.com>
> Subject: Re: [389-users] Read data immediately after write
> To: "General discussion list for the 389 Directory server
> project." <fedora-directory-users at redhat.com>
> Date: Thursday, October 8, 2009, 1:38 AM
>
> Ankur Agarwal wrote:
> >
> > I have a master-slave set-up with write operations always being
> done to
> > the master node. Now there is an issue where i need to read some
> data
> > immediately after write, and my read request goes to the slave.
> It fails
> > in cases when replication hasnt happened from master to slave before
> > this read operation.
>
> You simply should not do that. Read from the master if you have to
> rely on the
> consistency of what you recently wrote to the master.
>
> > Is there a LDAP level configuration to handle this situation?
> > Can chaining help in this case?
>
> No. (Except chaining the read requests of the writing client to
> the master
> which you don't want I guess).
>
> Ciao, Michael.
>
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