Johan Andersson's Cluster and HA Blog

Stuff mainly about MySQL Cluster. Johan works as a Consultant for Severalnines, a company focused on building fast, scalable, and highly available solutions. Prior to Severalnines, Johan was working at Ericsson/MySQL/Sun/Oracle and was the Principal Consultant and lead of the Cluster consulting group.

Thursday, June 20, 2013

Benchmarking the Performance Impact of Foreign Keys in MySQL Cluster 7.3 GA

FOREIGN KEYs in MySQL Cluster is a big step forward. It is now possible to run enterprise software with NDB Cluster as the storage back...

Monday, January 21, 2013

Galera Recovery - rsync or xtrabackup

Is there any difference using rsync or xtrabackup when performing SSTs? Yes, the main difference between the two methods is that the rsync...

Friday, December 14, 2012

Recommended MySQL Cluster setup

MySQL Cluster was first released in November 2004, in MySQL 4.1 - that’s a pretty mature nine-year old! There is a ton of information about ...

Tuesday, October 23, 2012

Hotbackup of Galera Cluster for MySQL using Xtrabackup

Hot backups are important for high availability, they can run without blocking the application. Percona Xtrabackup is a great too...

Monday, September 24, 2012

garbd - How to avoid network partitioning or split brain in a Galera Cluster

Network partitioning (aka split brain) is something you don’t want to happen, but what is the problem really? Sometimes, users set up a G...

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Johan Andersson

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