Обсуждение: mysql hash table equivalent?

Does postgres support in-memory only tables like the mysql HASH table type?

I want to store some session data which I need quick access of, but don't
care of it's lost on server stop/start

"Chris St Denis" <chris@aebc.com> writes:
> Does postgres support in-memory only tables like the mysql HASH table type?

No, and it doesn't seem particularly necessary: a table that is being
hit heavily will stay in cache buffers anyhow.  You don't need any
special mechanism.

            regards, tom lane

Tom Lane <tgl@sss.pgh.pa.us> writes:

> "Chris St Denis" <chris@aebc.com> writes:
>> Does postgres support in-memory only tables like the mysql HASH table type?
>
> No, and it doesn't seem particularly necessary: a table that is being
> hit heavily will stay in cache buffers anyhow.  You don't need any
> special mechanism.

And if you're really concerned about speed, you should be caching it
in application memory and saving the IPC round trip and the SQL
parsing overhead...

-Doug