Cloud SQL read pools provide operational simplicity and scaling for your large read workloads

## Feature Cloud SQL read pools provide operational simplicity and scaling for your large read workloads. Read pools provide a single endpoint in front of up to 20 read pool nodes and automatically load balance traffic. You can scale your read pool in several ways: * **Scale in or out**: scale load balancing capacity horizontally by modifying the number of read pool nodes in the read pool. Each read pool supports up to 20 read pool nodes. * **Scale up or down**: scale load balancing capacity vertically by modifying the machine type associated with a read pool node. Once defined, configuration is uniformly applied across each read pool node in the read pool. For more information, see [About read pools](https://cloud.google.com/sql/docs/mysql/about-read-pools).