Re: [RFC] GSoC Work on readonly queries done so far

Alvaro Herrera wrote:
> Simon Riggs wrote:
>> On Wed, 2007-06-06 at 12:17 -0400, Matthew T. O'Connor wrote:
>>> Florian G. Pflug wrote:
>>>> Work done so far:
>>>> -----------------
>>>>  .) Don't start autovacuum and bgwriter. 
>>> Do table stats used by the planner get replicated on a PITR slave?  I 
>>> assume so, but if not, you would need autovac to do analyzes.
>> The replication is an exact block-level replication of the master. We
>> can't write very much at all on the slave.
> 
> Hmm, something to keep in mind is forcing cache invals when the master
> causes them (for example relation cache, catalog caches and plan
> caches).


Perhaps if you are as PITR master and you have active readonly slaves 
then there should be a WAL record to note plan invalidations, etc?