Re: introduce bufmgr hooks

HHi,

On 2022-08-29 15:24:49 -0700, Nathan Bossart wrote:
> I'd like to propose some new hooks for the buffer manager.  My primary goal
> is to allow users to create an additional caching mechanism between the
> shared buffers and disk for evicted buffers.

I'm very doubtful this is a good idea. These are quite hot paths. While not a
huge cost, adding an indirection isn't free nonetheless.  I also think it'll
make it harder to improve things in this area, which needs quite a bit of
work.

Greetings,

Andres Freund