Memory management in Postgres

Hello,

I'm very interested in PostgreSQL memory management, specially in the
concept "memory context". I've read the official documentation at
http://www.postgresql.org/docs/8.4/static/spi-memory.html, but I'd
like to learn more about it. Do you recommend me any particular book
or url?

Many thanks in advance,

--
Jorge Arévalo
Internet & Mobilty Division, DEIMOS
jorge.arevalo@deimos-space.com
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