October 21, 2014

Improved spam blocking solution for our blog

We have had been using Akismet as our primary antispam tool for quite a while.  It works okay, but recently we have started to get the feeling we need a better solution. With Akismet were still burdened with a lot of manual moderation for false negatives and scanning detected spam for false positives (can’t say […]

Admin notice: comments again broken

(This note should not go to PlanetMySQL, sorry if it goes). We again have problem with comments to blog posts. It’s technical problem, we did upgrade some components and it seems it affected captcha. We are working on fix. We are sorry for the inconvenience and thank for reports about the problem.

MySQL Optimizer team comments on TPC-H Results

Yesterday I had a chance to speak to Igor – head of MySQL optimizer team and Timur – both of them expressed concern with TPC-H run results I posted and notes about little gains in MySQL 6.0. Do not get this post wrong. I’m not saying MySQL 6.0 SubQuery optimizations are non existent or priorities […]

MySQL Query Cache WhiteSpace and comments

Commenting on my previous post on MySQL Query Cache Gerry pokes me as I’m all wrong and both comments and whitespace are fixed in MySQL 5.0. This was not what I remember seeing in production so I decided to do some tests on the matter:

MySQL Performance Blog now uses Sphinx for Site Search

I never liked how build in WordPress search works. it shows full documents rather than snippets it does not search comments and it does not have any query language so I always used Google search if I wanted to find something on MySQL Performance Blog. Today we have published new search functionality for our site […]

About This Blog

The MySQL Performance Blog is the place where members of Percona’s MySQL Consulting and Support teams share their technical expertise with the entire MySQL community. It’s also a venue for us to hear from our users, customers, partners, competitors and the MySQL faithful around the world. So comment often and let us know what’s on […]

HAProxy: Give me some logs on CentOS 6.5!

HAProxy is frequently used as a load-balancer in front of a Galera cluster. While diagnosing an issue with HAProxy configuration, I realized that logging doesn’t work out of the box on CentOS 6.5. Here is a simple recipe to fix the issue. If you look at the top of /etc/haproxy/haproxy.cfg, you will see something like: […]

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 different scenarios. Why are MySQL upgrades needed? The reasons are many and include: Access to new features, performance benefits, bug fixes…. However, MySQL upgrades can […]

OpenStack: A MySQL DBA Perspective – Sept. 17 webinar

I’ll have the pleasure to present, next Wednesday, September 17 at 10 a.m. PDT (1 p.m. EDT) a webinar titled “OpenStack: A MySQL DBA Perspective.” Everyone is invited. The webinar will be divided into two parts. The first part will cover how MySQL can be used by the OpenStack infrastructure including the expected load, high-availability […]

Using MySQL 5.6 Global Transaction IDs (GTIDs) in production: Q&A

Thank you to all of you who attended my webinar last week about Global Transaction IDs (GTIDs), which were introduced in MySQL 5.6 to make the reconfiguration of replication straightforward. If you missed my webinar, you can still listen to the recording and download the sides (free). We had a lot of questions during the […]