Thanks to all who attended my webinar yesterday. The slides and recording are available on the webinar’s page. I was a bit overwhelmed with the amount of questions that came in and I’ll try to answer them the best I can here.
Q: Does Percona XtraDB Cluster support writing to multiple master?
Yes, it does. However, locks are not held on all nodes while a transaction is in progress, so there is a possibility for conflicts between simultaneous writes on different nodes. Certification is the process that Galera uses to protect your data integrity, and the problem is pushed back to the application to handle in the form of deadlock errors. As long as you understand this and the conditions where you may see more[Read more...]