On Wed, Jan 11, 2012 at 4:33 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
> BTW ... it occurs to me to ask whether we really have a solid use-case > for having listeners attached to slave servers. I have personally never > seen an application for LISTEN/NOTIFY in which the listeners were > entirely read-only. Even if there are one or two cases out there, it's > not clear to me that supporting it is worth the extra complexity that > seems to be needed. The idea is to support external caches that re-read the data when it changes. If we can do that from the standby then we offload from the master. Yes, there are other applications for LISTEN/NOTIFY and we wouldn't be able to support them all with this. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
