From: | Tim Gardner <tgardner(at)codeHorse(dot)com> |
---|---|
To: | pgsql-performance(at)postgresql(dot)org |
Cc: | "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com> |
Subject: | Re: performance of insert/delete/update |
Date: | 2002-11-26 00:40:43 |
Message-ID: | p05111b10ba0872da9242@[192.168.1.4] |
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Lists: | pgsql-hackers pgsql-performance |
>With Postgresql's implementation of MVCC, all your data are inserted in
>real time, with a transaction date that makes the other clients ignore
>them (mostly, other read committed transactions may or may not see them.)
>
>If there are indexes to update, they are updated in the same "invisible
>until committed" way.
>
>All this means that your inserts don't block anyone else's reads as well.
>
>This means that when you commit, all postgresql does is make them visible.
scott,
Exactly the kind of explanation/understanding I was hoping for!
Thank you!
Tim
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