Using memtables in sql. When is it reasonable and is it safe?

Posted by Spiros on Stack Overflow See other posts from Stack Overflow or by Spiros
Published on 2010-03-26T20:37:39Z Indexed on 2010/03/27 8:43 UTC
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sql

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mysql

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Oracle

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sql-server

I was just reading an update from a friend's project, mentioning the use of memtables to store data temporatily and then flush to a table on disk. Up to now, I have never faced a situation where I would use a memtable, or a situation where I would think the use of a mem table would be beneficial; so I wonder, when would someone use mem tables? what makes a memtable (appart from access speed) a reasonable choice? and how safe is it, even for temp data? there is always the limitation of available physical memory.

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