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Recovering temporal types in MySQL 5.6: TIME, TIMESTAMP and DATETIME
MySQL 5.6 introduces a new feature – microseconds resolution in some temporal types. As of 5.6.4 TIME, TIMESTAMP and DATETIME can have a fractional part. To create a field with subseconds you can...
View ArticleAdvanced MySQL Query Tuning: Webinar followup Q&A
Thanks to all who attended my “MySQL Query Tuning” webinar on July 24. If you missed it, you can you can download the slides and also watch the recorded video. Thank you for the excellent questions...
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Innotop: A real-time, advanced investigation tool for MySQL
GUI monitoring tools for MySQL are not always suitable for all our needs or situations. Most of them are designed to provide historical views into what happens to our database over time rather then...
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MySQL encryption performance, revisited
This is part two on a two-part series on the performance implications of in-flight data encryption with MySQL. In the first part, I focused specifically on the impact of using MySQL’s built-in SSL...
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Followup questions to ‘What’s new in Percona XtraDB Cluster 5.6′ webinar
Thanks to all who attended my webinar yesterday. The slides and recording are available on the webinar’s page. I was a bit overwhelmed with the amount of questions that came in and I’ll try to answer...
View ArticlePercona Live 2014 behind; MySQL ahead
I started using MySQL 11 years ago. That’s not too long compared to other people in the industry, but nonetheless here’s my perspective on the state of the MySQL industry after attending Percona Live...
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MySQL upgrade best practices
MySQL upgrades are necessary tasks and we field a variety of questions here at Percona Support regarding MySQL upgrade best practices. This post highlights recommended ways to upgrade MySQL in...
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...
View ArticleComparing MongoDB, MySQL, and TokuMX Data Layout
A lot is said about the differences in the data between MySQL and MongoDB. Things such as “MongoDB is document based”, “MySQL is relational”, “InnoDB has a clustering key”, etc.. Some may wonder how...
View ArticlePXC – Incremental State transfers in detail
IST BasicsState transfers in Galera remain a mystery to most people. Incremental State transfers (as opposed to full State Snapshot transfers) are used under the following conditions:The Joiner node...
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