Hot Standby design has been growing on the PostgreSQL Wiki for some
weeks now.
I've updated the design to reflect all feedback received so far on
various topics.
http://wiki.postgresql.org/wiki/Hot_Standby
It's not hugely detailed in every area, but it gives a flavour of the
topics and issues related to them.
Comments or questions welcome here, or I will discuss specific areas in
more detail as I tackle those topics.
-- Simon Riggs www.2ndQuadrant.comPostgreSQL Training, Services and Support