Right Size The Cluster

After the snapshotting phase, Materialize starts ingesting change events from the MySQL replication stream. For this work, Materialize generally performs well with a 100cc replica, so you can resize the cluster accordingly. 1. Still in a SQL client connected to Materialize, use the ALTER CLUSTER command to downsize the cluster to 100cc: mzsql ALTER CLUSTER ingest_mysql SET (SIZE '100cc'); Behind the scenes, this command adds a new 100cc replica and removes the 200cc replica. 1. Use the SHOW CLUSTER REPLICAS command to check the status of the new replica: mzsql SHOW CLUSTER REPLICAS WHERE cluster = 'ingest_mysql';

nofmt cluster | replica | size | ready -----------------+---------+--------+------- ingest_mysql | r1 | 100cc | t (1 row)