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Jeudis du Libre – Mons

Yesterday I was invited to speak at the “Jeudis du Libre” in Mons. The location was very special as it was in one auditorium of Polytech, the oldest university in the city of Mons. I presented in French two very hot topics in the MySQL ecosystem: MySQL InnoDB Cluster MySQL as Document Store with JSON datatype & X plugin Those … Read More


MySQL InnoDB Cluster: MySQL Shell starter guide

 Earlier this week,  MySQL Shell 1.08 has been released. This is the first Release Candidate of this major piece of MySQL InnoDB Cluster. Some commands have been changed and some new ones were added. For example the following useful commands were added: dba.checkInstanceConfiguration() cluster.checkInstanceState() dba.rebootClusterFromCompleteOutage() So let’s have a look on how to use the new MySQL Shell to create … Read More


MySQL Group Replication: about ack from majority

The documentation states that “For a transaction to commit, the majority of the group have to agree on the order of a given transaction in the global sequence of transactions.” This means that as soon as the majority of nodes member of the group ack the writeset reception, certification can start. So, as a picture is worth a 1000 words, … Read More


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


MySQL Day – Sessions review #9

Let’s finish these pre-FOSDEM MySQL Day Sessions reviews with Kenny Gryp‘s talk on MySQL Group Replication. Kenny is working at Percona as MySQL Practice Manager. Group Replication went Generally Available end of 2016, it introduces a (virtually) ‘synchronous’ active:active multi-master replication, in addition to asynchronous and semi-synchronous replication, the latter 2 being available in in MySQL for longtime. As with … Read More


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