When you want to introduce high availability you should---Create a failover replica instance in the same region, but in a different zone.
Each Cloud SQL instance utilizes a virtual machine (VM) running on a Cloud hosted server. Each VM runs a database program. B. MySQL servers, PostgreSQL or SQL servers, and service agents that provide support services.Logging and Monitoring.
Migrate your existing workloads to Cloud SQL or SQL Server running on the fully compatible Compute Engine. SQL Server running on Cloud works with all the tools you know , like Visual Studio. Connect your existing workloads to the best that Cloud has to offer.
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