by Raghavendra | Feb 21, 2014 | MySQL, Percona Software
I spoke last month at linux.conf.au 2014 in Perth, Australia, and one of my sessions focused on the “Continuous Integration (CI) testing of Percona XtraDB Cluster (PXC)” at the Developer,Testing, Release and CI miniconf. Here is the video of the...
by Bill Karwin | Feb 12, 2014 | Insight for DBAs, Webinars
January 22 I gave a presentation on “How to Avoid Common (but Deadly) MySQL Operations Mistakes” for Percona MySQL Webinars. If you missed it, you can still register to view the recording and my slides. Thanks to everyone who attended, and especially to...
by Zardosht.Kasheff | Feb 3, 2014 | MySQL
William Zola over at MongoDB gave a great talk called “The (Only) Three Reasons for Slow MongoDB Performance”. It reminded me of an interesting characteristic of updates in MongoDB. Because MongoDB’s main data store is a flat file and secondary indexes store offsets...
by Dave Rosenlund | Jan 21, 2014 | MySQL
You love MySQL and MariaDB for its ease of deployment, but what if you could increase performance and save significant time and money when your application starts to scale without having to change your applications? Register Now! SPEAKER: Tim Callaghan, VP of...
by Yves Trudeau | Jan 20, 2014 | Insight for DBAs, MySQL
Over the last few days, I integrated the MySQL 5.6 GTID version of the Percona Replication Manager (PRM) work of Frédéric Descamps, a colleague at Percona. The agent supports the GTID replication mode of MySQL 5.6 and if the master suffers a hard crash, it picks the...
by Bill Karwin | Jan 13, 2014 | Insight for DBAs, Insight for Developers, Webinars
On January 22 I’ll be presenting the first of a series of two new webinars focusing on avoiding common MySQL mistakes: How to Avoid Common (but Deadly) MySQL Operations Mistakes. “Don’t bother me with DBA ‘best practices,’ we have real work to get done.” So go...
by Yves Trudeau | Jan 10, 2014 | Insight for DBAs, MySQL, Percona Software
Most technologies achieving high-availability for MySQL need a load-balancer to spread the client connections to a valid database host, even the Tungsten special connector can be seen as a sophisticated load-balancer. People often use hardware load balancer or...
by Akshay Suryawanshi | Dec 24, 2013 | Insight for DBAs, MySQL
One of the routine tasks for a DBA is MySQL 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...
by Jay Janssen | Dec 19, 2013 | MySQL
A decade ago MySQL folks were in love with the concept of a relay slave for MySQL high availability across data centers. A relay is a single slave in a remote data center that receives replication from the global master and, in turn, replicates to all the other local...
by Dave Rosenlund | Dec 10, 2013 | MySQL
Use your MySQL expertise to analyze the strengths and weaknesses of MongoDB. SPEAKER: Tim Callaghan, VP of Engineering at Tokutek DATE: Tuesday, December 17th TIME: 1pm ET Register Now! MongoDB is a popular NoSQL DBMS that shares the ease-of-use and quick setup that...
by Rich.Prohaska | Nov 19, 2013 | MySQL
What does it mean if MySQL returns the ‘Incorrect key file for table’ error for one of my queries? The answer is complicated and depends on which storage engine is returning the error. We have debugged two cases which we describe here. File system out of...
by Ryan Lowe | Nov 13, 2013 | Insight for DBAs, MySQL, Webinars
Sphinx is a free, open-source search server that integrates nicely with MySQL. It provides a fast, scalable, and pluggable search framework. The Sphinx engine possesses a variety of tools enabling you to customize how searching/indexing interacts with or becomes a...
by Mike Benshoof | Nov 12, 2013 | MySQL, Webinars
Drupal is one of the most popular open source CMS applications available – and it runs primarily on a MySQL backend. Out of the box, the schema is well tuned and indexed. However, there are some ways to tweak the default installation to get more out of the...
by Dave Rosenlund | Nov 8, 2013 | MySQL
Attending Percona Live in London next week? Don’t miss the chance to hear Tokutek’s Vice President of Engineering, Tim Callaghan, discuss how to use your MySQL knowledge to become an instant MongoDB Guru and the advantages of using Fractal Tree® indexes in...
by Dave Rosenlund | Oct 30, 2013 | MySQL
You love MySQL for its ease of deployment – but are you worried about how your application will perform when it starts to scale? SPEAKER: Gerry Narvaja, Tokutek DATE: Wednesday, November 6th TIME: 1pm ET Register Now! Join this interactive webinar with Gerry...
by Rich.Prohaska | Oct 23, 2013 | MySQL
While integrating TokuDB into MySQL 5.6, we found that MySQL 5.6 does not support more than one XA storage engine. For example, there is an assert in the ha_recover function that fires when the total number of XA storage engines is greater than one. After disabling...
by Stephane Combaudon | Oct 22, 2013 | MongoDB, MySQL
We already discussed one to one relations in MongoDB, and the main conclusion was that you should design your collections according to the most frequent access pattern. With one to many relations, this is still valid, but other factors may come into play. Let’s...
by Rich.Prohaska | Oct 16, 2013 | MySQL
I am developing a concurrent application that uses TokuDB to store its database. Sometimes, one of my SQL statements returns with a ‘lock wait timeout exceeded’ error. How do I identify the cause of this error? First, I need to understand a little bit...
by Tim.Callaghan | Oct 14, 2013 | MySQL
Today we released TokuDB v7.1, which includes the following important features and fixes: Added ability for users to view lock information via information_schema.tokudb_trx, information_schema.tokudb_locks, and information_schema.tokudb_lock_waits tables. Changed the...
by Zardosht.Kasheff | Oct 11, 2013 | MySQL
Since introducing TokuMX, we’ve discussed benefits that TokuMX has for existing MongoDB applications that require no changes. In this post, I introduce an extension we’ve made to the indexing API: clustering indexes, a tool that can tremendously improve query...
