Re: HOT question - insert/delete
От
Grzegorz Jaśkiewicz
Тема
Re: HOT question - insert/delete
Дата
Msg-id
2f4958ff0905210134oc594f02ha437723f50937cdc@mail.gmail.com
Ответ на
Re: HOT question - insert/delete (Merlin Moncure)
Список
Дерево обсуждения
HOT question - insert/delete Gerhard Wiesinger <lists@wiesinger.com>
Re: HOT question - insert/delete Merlin Moncure <mmoncure@gmail.com>
Re: HOT question - insert/delete Simon Riggs <simon@2ndQuadrant.com>
Re: HOT question - insert/delete Gerhard Wiesinger <lists@wiesinger.com>
Re: HOT question - insert/delete Grzegorz Jaśkiewicz <gryzman@gmail.com>
Re: HOT question - insert/delete Gerhard Wiesinger <lists@wiesinger.com>
On Wed, May 20, 2009 at 9:01 PM, Merlin Moncure wrote: > On Wed, May 20, 2009 at 3:11 PM, Gerhard Wiesinger wrote: >> Hello! >> >> Is HOT in 8.3 used in the following scenario: >> INSERT ... >> DELETE ... >> at the same ratio. >> >> So for example current data is added every minute and all old data older >> than 2 years are deleted. >> >> Would the heap be bloated or is this avoided by the HOT feature of 8.3 and >> nearly kept constant? > > HOT doesn't help here...it only helps with updates and then only if > you are updating fields that are not indexed. if your table has a > rolling set of data, for example a log file...you probably want to > look at table partitioning (either manual or built in). on that note, does HOT works in case I have TOASTed columns ? bytea, varchar(), etc ? -- GJ
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