What are the different modes of MySQL clustering?

There are several main patterns for MySQL clusters:

1. Master-Slave Replication: One main node (Master) is responsible for handling write operations, while multiple secondary nodes (Slaves) replicate the data from the main node and are used for read operations. This mode can improve read-write separation and load balancing.
2. Master-Master Replication: Multiple nodes act as primary nodes, able to handle both read and write operations simultaneously. This mode increases availability, as if one node fails, the others can continue to provide service.
3. Mixed Replication combines the characteristics of both master-slave and master-master replication modes to achieve high availability, read-write separation, and load balancing.
4. MySQL Cluster is a high availability, high performance cluster solution built using the NDB storage engine. It achieves scalability and fault tolerance through data partitioning and data synchronization between multiple nodes.

These patterns can be used to build a MySQL cluster according to actual needs and scenarios.