Q: regarding backends

Hi all,

and sorry if I'm asking a question that has been answered before; has the
PostgreSQL community ever considered different key/value backends (sort of like
MySQL with its many different options)?

We'd be very interested in seeing the effects of integrating LMDB [*] in terms
of performance gains. Has this avenue been explored before?

Thanks,
Stephan

[*] http://symas.com/mdb/