Re: Simplifying replication

Josh Berkus <josh@agliodbs.com> writes:
> What would be sensible for DBAs is to have two settings:

> max_wal_size
> min_wal_size

[ scratches head... ]  What's the functional effect of min_wal_size, exactly?

> Even better would be to replace min_wal_size with min_wal_time, which 
> would set a time span for the oldest WAL segment to be kept (up to 
> max_wal_size - 2).   Hmmm.  That doesn't seem that hard to implement. 
> Is it?

Um, what happens when honoring min_wal_time conflicts with honoring
max_wal_size?
        regards, tom lane