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Inexpensive SSDs for Database Workloads
The cost of SSDs has been dropping rapidly, and at the time of this writing, 2.5-drives have reached the 1TB capacity mark. You can actually get inexpensive drives for as little as 60 cents per GB....
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InnoDB scalability issues due to tables without primary keys
Each day there is probably work done to improve performance of the InnoDB storage engine and remove bottlenecks and scalability issues. Hence there was another one I wanted to highlight:Scalability...
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Generating test data for MySQL tables
One of the common tasks requested by our support customers is to optimize slow queries. We normally ask for the table structure(s), the problematic query and sample data to be able to reproduce the...
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The MySQL ARCHIVE storage engine – Alternatives
In my previous post I pointed out that the existing ARCHIVE storage engine in MySQL may not be the one that will satisfy your needs when it comes to effectively storing large and/or old data. But are...
View ArticleHow to monitor ALTER TABLE progress in MySQL
While working on a recent support issue as a Percona Support Engineer, I got one question from a customer asking how to monitor ALTER TABLE progress. Actually, for MySQL 5.5 and prior versions, it’s...
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Q&A: Common (but deadly) MySQL Development Mistakes
On Wednesday I gave a presentation on “How to Avoid Common (but Deadly) MySQL Development Mistakes” for Percona MySQL Webinars. If you missed it, you can still register to view the recording and my...
View ArticleRow-based replication, MySQL 5.6 upgrades and temporal data types
Whither your rollback plan?MySQL 5.6 upgrades are in full swing these days and knowing how to safely upgrade from MySQL 5.5 to 5.6 is important. When upgrading a replication environment, it’s important...
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Sysbench Benchmarking of Tesora’s Database Virtualization Engine
Tesora, previously called Parelastic, asked Percona to do a sysbench benchmark evaluation of its Database Virtualization Engine on specific architectures on Amazon EC2.The focus of Tesora is to provide...
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Illustrating Primary Key models in InnoDB and their impact on disk usage
On a recent engagement I worked with a customer who makes extensive use of UUID() values for their Primary Key and stores it as char(36), and their row count on this example table has grown to over 1...
View ArticleOptimizer hints in MySQL 5.7.7 – The missed manual
In version MySQL 5.7.7 Oracle presented a new promising feature: optimizer hints. However it did not publish any documentation about the hints. The only note which I found in the user manual about the...
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