On Mon, Mar 25, 2024 at 1:10 PM Scott Ribe <scott_ribe(at)elevated-dev(dot)com>
wrote:
> If WAL compression is enabled, does this mean that traffic to a file-based
> WAL-shipping standby is compressed? (In other words, WAL files are sent
> post-compression?)
>
From the docs:
When enabled, the PostgreSQL server compresses full page images written to
WAL when full_page_writes is on or during a base backup.
That is, some of the contents are compressed, it is not the container that
gets compressed. That is always 64MB in a default compilation.
David J.