April 24, 2014

How rows_sent can be more than rows_examined?

When looking at queries that are candidates for optimization I often recommend that people look at rows_sent and rows_examined values as available in the slow query log (as well as some other places). If rows_examined is by far larger than rows_sent, say 100 larger, then the query is a great candidate for optimization. Optimization could […]

Upcoming Webinar: What’s new in Percona XtraDB Cluster 5.6

I’ve been blogging a lot about some of the new things you can expect with Percona XtraDB Cluster 5.6 and Galera 3.x – and GA is coming soon. To get prepared, I’ll be giving a webinar on February 5th at 1PM EST/10AM PST to talk about some of the big new features, upgrading strategies, as well as […]

Renaming database schema in MySQL

One of the routine tasks for a DBA is renaming database schemas, and as such MySQL added a command to carry out that purpose called “RENAME DATABASE <database_name>”. However this command just made it through a few minor releases before being discontinued (from MySQL 5.1.7 to 5.1.23). Here’s a link to the reference manual regarding […]

The top 5 proactive measures to minimize MySQL downtime

I’m happy to announce that the recording for my recent webinar “5 Proactive Measures to Minimize MySQL Downtime” is now available, along with the slides. They can both be found here. My webinar focused on the top 5 operational measures that prevent or reduce downtime — along with the related business impact in a significant […]

MySQL Webinar: 5 proactive measures to help minimize MySQL downtime, July 17

Failure is an unavoidable part of IT life, but it does not always have to imply MySQL service downtime. In the years I have been working at Percona, I have been involved in many customer emergency cases, and I have seen a good number of problems that could have been avoided or alleviated if relatively […]

Poll: What programming languages and platforms do you use?

What programming languages and platforms do you use for large-scale projects in your organization? If something is missing from the list please leave a comment and share your story. Thanks!

How people are using MySQL… from 1 user to 100 million (upcoming conference talk)

MySQL can be deployed in several ways, and that means you can choose a tailor-made path that best meets your needs. With simple services or development systems, many people are using a single server with some backups configured, and then simply take the downtime when a restore is needed. As the application evolves, additional requirements […]

Percona MySQL University coming to Toronto this Friday!

Percona MySQL University, Toronto is taking place this Friday and I’m very excited about this event because it is a special opportunity to fit a phenomenal number of specific and focused MySQL technical talks all into one day, for free. Over the course of the day we will cover some of the hottest topics in the MySQL […]

Reminder: Speaking at MySQL Meetups in Charlotte and Atlanta today and tomorrow.

In a few hours I’m leaving for my “SouthEast Meetup Tour” first going to Charlotte where I’m speaking Today, Jan 14, about MySQL Indexing: Best practices on local MySQL Meetup and then going to Atlanta to give the same talk on Atlanta MySQL Meetup Jan 15th. If you’re in the area please come by, I’ll […]

Upcoming Webinar – “Deploy MySQL Like a devops SysAdmin”

“devops” seems to be everywhere now, or at least everyone is talking about it. But what does that really mean? And how does the DBA integrate the movement ? During next week’s webinar, I will explain to you the big principles of the devops culture and illustrate how DBA’s can (must) be part of the […]