MVCC, undo log, and HOT - Mailing list pgsql-hackers

From Bruce Momjian
Subject MVCC, undo log, and HOT
Date
Msg-id 200710202249.l9KMn0u22815@momjian.us
Whole thread Raw
Responses Re: MVCC, undo log, and HOT
List pgsql-hackers
Those who have been with the community from long ago might remember
discussion about implementing a undo log.  The big advantage of this is
that it allows UPDATE to _replace_ rows and limits the amount of cleanup
required for UPDATEs.

I am hoping that with HOT we will no longer have any need to even
consider undo.

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://postgres.enterprisedb.com
 + If your life is a hard drive, Christ can be your backup. +


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