Comments on: How MySQL Query Cache works with Transactions http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/ Percona's MySQL & InnoDB performance and scalability blog Sat, 11 Feb 2012 16:45:54 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Meadows http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/comment-page-1/#comment-860766 Meadows Tue, 20 Dec 2011 17:32:50 +0000 http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/#comment-860766 I am looking to tune a highly transactional messaging database and on most of my servers I turn on query cache and tune it...so that I know how to do. My question is I can't have people viewing old data, I need them to view the current data at all times, does the query cache recognize when the result set is a different size and not use the cached version? I am looking to tune a highly transactional messaging database and on most of my servers I turn on query cache and tune it…so that I know how to do. My question is I can’t have people viewing old data, I need them to view the current data at all times, does the query cache recognize when the result set is a different size and not use the cached version?

]]> By: kousi http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/comment-page-1/#comment-363556 kousi Tue, 21 Oct 2008 06:46:49 +0000 http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/#comment-363556 what is query cache? how it works and where is works well? please reply soon what is query cache? how it works and where is works well? please reply soon

]]> By: Shelon Padmore http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/comment-page-1/#comment-237186 Shelon Padmore Fri, 01 Feb 2008 22:10:36 +0000 http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/#comment-237186 I tend to agree that the benefits to be gained are most times VERY marginal when looked at in the context of the bigger app performance picture. Most times just not worth the effort. - Shelon Padmore I tend to agree that the benefits to be gained are most times VERY marginal when looked at in the context of the bigger app performance picture.
Most times just not worth the effort.

- Shelon Padmore

]]> By: peter http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/comment-page-1/#comment-235919 peter Wed, 30 Jan 2008 05:28:44 +0000 http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/#comment-235919 Pete, Thank you for good illustration of this behavior. I see for you this behavior is quite and inconvenience. Good to know. I tend not to relay on Query Cache a lot in most large scale applications. There are just too many limits. Pete,

Thank you for good illustration of this behavior.
I see for you this behavior is quite and inconvenience. Good to know.

I tend not to relay on Query Cache a lot in most large scale applications. There are just too many limits.

]]> By: Pete Harlan http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/comment-page-1/#comment-235838 Pete Harlan Wed, 30 Jan 2008 01:15:16 +0000 http://www.mysqlperformanceblog.com/2008/01/29/how-mysql-query-cache-works-with-transactions/#comment-235838 I filed a bug report about this in Sept 2006 if you're interested in reading Heikki's thoughts on the matter: http://bugs.mysql.com/bug.php?id=22618 I filed a bug report about this in Sept 2006 if you’re interested in reading Heikki’s thoughts on the matter:

http://bugs.mysql.com/bug.php?id=22618

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