persistent read cache - Mailing list pgsql-hackers

Hi. I wonder if there is such a thing or extension in the PG world.

Here is my use case. I am using PG (PG10 to be more specific) in a
cloud VM environment. The tables are stored in RAID0 managed SSD
backed attached storage. Depending on the VM I am using, I usually
have 256GB local SSD unused.

I wonder if PG could leverage this local SSD as a read (page/block)
cache, to complement/extend  the DRAM by used by shared_buffer today.

Thanks.