Specify connection backoff

This comment explains that Go's standard `database/sql` package does not have a built-in feature for configuring exponential backoff. Users who require custom retry logic will need to implement it in their application code.

Code sample

Go

To authenticate to AlloyDB, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

// database/sql does not support specifying backoff

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