Re: Use WALReadFromBuffers in more places

On Wed, 2025-09-24 at 07:26 -0700, Bharath Rupireddy wrote:
> Right. Reading unflushed WAL buffers for replication was one of the
> motivations. But, in general, WALReadFromBuffers has more benefits
> since it lets WAL buffers act as a cache for reads, avoiding the need
> to re-read WAL from disk for (both physical and logical) replication.
> For example, it makes the use of direct I/O for WAL more realistic
> and
> can provide significant performance benefits [1].

Is it possible to do a POC that shows the potential benefit, or are we
still too far away?

Regards,
    Jeff Davis