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Better high availability: MySQL and Percona XtraDB Cluster with good application design

 | December 21, 2015 |  Posted In: High-availability, Insight for DBAs, MySQL, Percona XtraDB Cluster, Replication, XtraDB Cluster

High Availability Have you ever wondered if your application should be able to work in read-only mode? How important is that question? MySQL seems to be the most popular database solution for web-based products. Most typical Internet application workloads consist of many reads, with usually few writes. There are exceptions of course – MMO games […]

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PXC – Incremental State transfers in detail

 | August 5, 2015 |  Posted In: MySQL, Percona XtraDB Cluster

IST Basics State 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 reports Galera a valid Galera GTID to the cluster The Donor node selected contains all the transactions the Joiner needs to catch up to […]

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The Q&A: Creating best-in-class backup solutions for your MySQL environment

 | July 23, 2015 |  Posted In: Hardware and Storage, Insight for DBAs, MySQL, MySQL Webinars

Thank you for attending my July 15 webinar, “Creating Best in Class Backup solutions for your MySQL environment.” Due to the amount of content we discussed and some minor technical difficulties faced near the end of webinar we have decided to cover the final two slides of the presentation along with the questions asked by […]

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TOI wsrep_RSU_method in PXC 5.6.24 and up

 | July 6, 2015 |  Posted In: MySQL, Percona XtraDB Cluster

I noticed that in the latest release of Percona XtraDB Cluster (PXC), the behavior of wsrep_OSU_method changed somewhat.  Prior to this release, the variable was GLOBAL only, meaning to use it you would:

This had the (possibly negative) side-effect that ALL DDL’s issued on this node would be affected by the setting while in […]

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Playing with Percona XtraDB Cluster in Docker

 | June 30, 2015 |  Posted In: High-availability, MySQL, Percona XtraDB Cluster, Quality Assurance, XtraDB Cluster

Like any good, thus lazy, engineer I don’t like to start things manually. Creating directories, configuration files, specify paths, ports via command line is too boring. I wrote already how I survive in case when I need to start MySQL server (here). There is also the MySQL Sandbox which can be used for the same […]

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Q&A: High availability when using MySQL in the cloud

 | June 19, 2015 |  Posted In: Cloud and MySQL, MySQL, MySQL Webinars, Percona XtraDB Cluster

Last week I hosted a webinar on using MySQL in the cloud for High Availability (HA) alongside 451 Research analyst Jason Stamper. You can watch the recording and also download the slides (free) here. Just click the “Register” button at the end of that page. We had several excellent questions and we didn’t have time […]

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