key/value store optimized for disk storage

[Paul Rubin]

John Nagle <nagle at animats.com> writes:
>    That's awful. There's no point in compressing six characters
> with zlib.  Zlib has a minimum overhead of 11 bytes.  You just
> made the data bigger.

This hack is about avoiding the initialization overhead--do you really
get 11 bytes after every SYNC_FLUSH?  I do remember with that SYNC_FLUSH
trick, that I got good compression with a few hundred bytes of input
(the records I was dealing with at the time).