Re: Zstandard support for toast compression

On Wed, May 18, 2022 at 12:17:16PM -0400, Robert Haas wrote:
> i.e. something like:
> 
> 00 = PGLZ
> 01 = LZ4
> 10 = reserved for future emergencies
> 11 = extended header with additional type byte (1 of 256 possible
> values reserved for Zstandard)

Btw, shouldn't we have something a bit more, err, extensible for the
design of an extensible varlena header?  If we keep it down to some
bitwise information, we'd be fine for a long time but it would be
annoying to review again an extended design if we need to extend it
with more data.
--
Michael