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MySQL Group Replication… synchronous or asynchronous replication ?

After some feedback we received from early adopters or discussions during events like FOSDEM, I realized that there is some misconception about the type of replication that MySQL Group Replication is using. And even experts can be confused as Vadim’s blog post illustrated it. So, is MySQL Group Replication asynchronous or synchronous ?? … in fact it depends ! The … Read More


How to migrate from Galera Cluster to MySQL Group Replication

In this article, I will show you how it’s possible to perform an online migration from a 3 members Galera cluster setup (in this case I’m using PXC 5.7.14) to a 3 members MySQL Group Replication cluster setup (MySQL Community 5.7.17). Don’t forget that before adopting Group Replication as database backend, you should validate that your application do match GR … Read More


Group Replication is GA with MySQL 5.7.17 – comparison with Galera

It’s a wonderful news, we have released MySQL 5.7.17 with Group Replication Plugin (GA quality). From the definition, Group Replication is a multi-master update everywhere replication plugin for MySQL with built-in conflict detection and resolution, automatic distributed recovery, and group membership. So we can indeed compare this solution with Galera from Codership which is a Replication Plugin implementing the WSREP … Read More


Advanced Percona XtraDB Cluster in a Nutshell, La Suite: Hands-on Tutorial (Not for Beginners!)

Also during Percona Live with my colleague Kenny Gryp, we delivered a tutorial on Percona XtraDB Cluster (Galera) These are the slides:   Advanced percona xtra db cluster in a nutshell… la suite plsc2016 from Frédéric Descamps


Galera Replication Demystified: How Does It Work?

At Percona Live 2016, I presented a talk related to Galera. I tried to explain what’s really behind the magic. I think it’s essential for all who want to use Galera replication in MySQL to understand all these concepts. These are the slides: Galera Replication Demystified: How Does It Work? from Frédéric Descamps    


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