Yannick Lecaillez wrote: > Thanks a lot for all people which answer. > > I have this "clustering on SAN" problem today and i think it could be > less harder to implement this today than it was for Oracle in 1993 > (since i can find a lot of work in opensource which could be interesting > in this project : distributed lock, clustered shared memory, etc ...). > > I will try to have a look about all these things btw, i haven't got > the pretention to suceed to do anything ... Just look and see > a bit more deeply how it could be hard. > > Is there something like a "big picture" about postgres internal ? > What path is used from the SQL query to the hard-disk files ? About > the internal locking mechanism ? about the usage of the shared memory ? > I see there is everything described in the postgres doc but no "big > picture" which could help me to understand faster ... :(
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