Hello Amit, > Sometime back Robert has proposed a solution to reduce the bloat in > PostgreSQL  which has some other advantages of its own as well. To > recap, in the existing heap, we always create a new version of a tuple on > an update which must eventually be removed by periodic vacuuming or by > HOT-pruning, but still in many cases space is never reclaimed completely. > A similar problem occurs for tuples that are deleted. This leads to bloat > in the database.
This is an impressive work! Personally I would like to note that performance is probably not a priority at this stage. Most important parts, in my humble opinion at least, are correctness, maintainability (tests, documentation, how readable the code is), extendability (e.g. an ability to add point in time recovery in the future), interfaces and heap format. There is some saying on premature optimization... don't remember exact words and who said this. -- Best regards, Aleksander Alekseev
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