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Training Updates

 | October 16, 2009 |  Posted In: Events and Announcements, MySQL

I wanted to provide an update on two things: Firstly, we have opened registration for InnoDB/XtraDB training in Los Angeles (Nov 18th). The second is that while I am in New York City for training (Oct 29th), I’ll be giving a (free) talk at the MySQL Meetup group there (Oct 28th). We love to speak […]

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How (not) to find unused indexes

 | October 16, 2009 |  Posted In: Insight for DBAs, MySQL

I’ve seen a few people link to an INFORMATION_SCHEMA query to be able to find any indexes that have low cardinality, in an effort to find out what indexes should be removed.  This method is flawed – here’s the first reason why:

The cardinality of status index is woeful, but provided that the application […]

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InnoDB/XtraDB Training in New York City!

 | September 25, 2009 |  Posted In: Events and Announcements, MySQL

Our Santa Clara/San Francisco training went great – 100% of survey respondents said they would recommend the same course to a friend.  I’m pleased to announce that such an opportunity exists – our next training location will be New York City on October 30, 2009. We’ve booked a training venue in the financial district of […]

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Speaking at Highload.ru

 | September 24, 2009 |  Posted In: Events and Announcements, MySQL

This is a quick announcement to say that I’ll be speaking at HighLoad++ this year (October 12-14 in Moscow).  I’ll be presenting on a few topics: MySQL Performance Tuning (Conference Session) Quick Wins with Third Party Patches for MySQL (Conference Session) Performance Optimization for MySQL with InnoDB and XtraDB * (Full day class) This will […]

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Off to California!

 | September 10, 2009 |  Posted In: Events and Announcements

Today’s the day I fly to Los Angeles to teach a private training class, en route to Santa Clara/San Francisco for our public training workshops next week.

Our Montreal practice teach at Station-C went great – it was an opportunity to do a road test and iron out any kinks in the delivery.

What did I learn in the process?

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A few administrative updates

 | August 26, 2009 |  Posted In: Events and Announcements

I wanted to write a few administrative updates in one so I didn’t spam everyone’s feed readers too much. Here we go: We’ve had reports of some lost comments.  We reported this via Twitter a while ago, but thought it was fixed.  We’ll try and pay more attention to spam filtering, but we wanted to […]

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XtraDB: The Top 10 enhancements

 | August 13, 2009 |  Posted In: Percona Software

Note: This post is part 2 of 4 on building our training workshop. Last week I talked about why you don’t want to shard. This week I’m following up with the top 10 enhancements that XtraDB has over the built-in InnoDB included in MySQL 5.0 and 5.1.  Building this list was not really a scientific […]

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Why you don’t want to shard.

 | August 6, 2009 |  Posted In: Insight for Developers

Note: This blog post is part 1 of 4 on building our training workshop.

The Percona training workshop will not cover sharding. If you follow our blog, you’ll notice we don’t talk much about the subject; in some cases it makes sense, but in many we’ve seen that it causes architectures to be prematurely complicated.

So let me state it: You don’t want to shard.

Optimize everything else first, and then if performance still isn’t good enough, it’s time to take a very bitter medicine. The reason you need to shard basically comes down to one of these two reasons

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