Category Archives: Replication

Automatic provisioning in Group Replication

With the release of version 8.0.17 of MySQL, we bring to you the brand new Clone plugin. Allowing you to get physical snapshots of data stored in InnoDB, this new plugin is an ideal addition to your Group Replication setup.

When joining a new server into a running replication group, a manual offline provisioning procedure was required in most cases as a tool to execute this step in the context of distributed recovery was missing.…

MySQL InnoDB Cluster – Automatic Node Provisioning

The MySQL Development Team is very excited and proud of what was achieved in this 8.0.17 GA release!

The spotlight is on… A game-changer feature – Automatic Node provisioning!

This has been an extremely desired and important feature, and it has been accomplished, once again, with tight integration and cooperation of MySQL Components:

  • The new MySQL Clone Plugin: To take a physical snapshot of the database and transfer it over the network to provision a server, all integrated into the server, using regular MySQL connections.

No Ping Will Tear Us Apart – Enabling member auto-rejoin in Group Replication

With the release of version 8.0.16 of MySQL, we’ve added some features to the Group Replication (GR) plugin, in order to enhance its high-availability capacities. One of these features was the ability to enable a member that has left the group, under certain circumstances, to automatically rejoin it, without need of intervention by the user.…

Configuring the communication protocol in Group Replication

In a previous blog post we presented the message fragmentation functionality that you can use starting with MySQL Group Replication 8.0.16.

No group member can have a version < 8.0.16 if you wish to use message fragmentation in a group. MySQL 8.0.16 also ships with a new Group Replication concept to help you ensuring backwards compatibility: the group’s communication protocol.…

Enhanced support for large transactions in Group Replication

MySQL 8.0.16 is out and it enhances Group Replication as usual. For example, the group_replication_exit_state_action system variable has a new default value, and members that the group expels can now automatically try to rejoin. This post presents a new feature MySQL 8.0.16 brings to Group Replication: message fragmentation.…

MySQL 8.0.16 Replication Enhancements

MySQL 8.0.16 has been released last Thursday. In it, you can find some new replication features. Here is a quick summary. Follow-up blog posts will provide details about these features.

  • Large Messages Fragmentation Layer for Group Replication. Tiago Vale’s work, introduces message fragmentation to the Group Communication Framework.

Group Replication – Consistent Reads Deep Dive

On previous posts about Group Replication consistency we:

  1. introduced consistency levels;
  2. explained how to configure the primary failover consistency;
  3. presented how to configure transaction consistency levels to achieve the consistency required by your applications.

In blog 3. we presented the consistency levels: EVENTUAL, BEFORE, AFTER and BEFORE_AND_AFTER; their scopes: SESSION, GLOBAL; and their context: whether they only impact the ongoing transaction or all concurrent transactions.…