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Monthly Archives: August 2006

MySQL Performance Forums

I’m happy to announce availability of MySQL Performance Forums on MySQL Performance Blog. This forum is created as free alternative to MySQL Consulting Services which we provide. If you would like to get some free …

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Using UNION to implement loose index scan in MySQL

One little known fact about MySQL Indexing, however very important for successfull MySQL Performance Optimization is understanding when exactly MySQL is going to use index and how it is going to do them. So if …

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Cache Performance Comparison

Jay Pipes continues cache experiements and has compared performance of MySQL Query Cache and File Cache. Jay uses Apache Benchmark to compare full full stack, cached or not which is realistic but could draw missleading …

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Caching techinques

Recently Jay Pipes published great article about lazy connecting and caching which reminded me my post on this matter is well overdue. Let me start with couple of comments about Jays article. First – caching …

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SELECT LOCK IN SHARE MODE and FOR UPDATE

Baron wrote nice article comparing locking hints in MySQL and SQL Server. In MySQL/Innodb LOCK IN SHARE MODE and SELECT FOR UPDATE are more than hints. Behavior will be different from normal SELECT statements. Here …

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Innodb Double Write

One of very interesting techniques Innodb uses is technique called “doublewrite” It means Innodb will write data twice when it performs table space writes – writes to log files are done only once. So why …

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MySQL Prepared Statements

If you care about archiving best performance in your application using MySQL you should learn about prepared statements. These do not neccesary provide performance beneft but they may, they also have other benefits. As a …

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