Percona XtraDB Cluster 8.4 Documentation¶

This documentation is for the latest release: Percona XtraDB Cluster 8.4.4-4 release notes.

Percona XtraDB Cluster is a database clustering solution for MySQL. It ensures high availability, prevents downtime and data loss, and provides linear scalability for a growing environment.

Features of Percona XtraDB Cluster¶

Feature	Details
Synchronous replication	Data is written to all nodes simultaneously, or not written at all in case of a failure even on a single node
Multi-source replication	Any node can trigger a data update.
True parallel replication	Multiple threads on replica performing replication on row level
Automatic node provisioning	You simply add a node and it automatically syncs.
Data consistency	No more unsynchronized nodes.
PXC Strict Mode	Avoids the use of tech preview features and unsupported features
Configuration script for ProxySQL	Percona XtraDB Cluster includes the `proxysql-admin` tool that automatically configures Percona XtraDB Cluster nodes using ProxySQL.
Automatic configuration of SSL encryption	Percona XtraDB Cluster includes the `pxc-encrypt-cluster-traffic` variable that enables automatic configuration of SSL encryption
Optimized Performance	Percona XtraDB Cluster performance is optimized to scale with a growing production workload

Percona XtraDB Cluster 8.4 is fully compatible with MySQL Server Community Edition 8.4 and Percona Server for MySQL 8.4. The cluster has the following compatibilities:

Data - use the data created by any MySQL variant.
Application - no changes or minimal application changes are required for an application to use the cluster.