Retry a failed connection when using HikariCP

Retry failed connections when connecting to Cloud SQL for PostgreSQL by using the HikariCP JDBC connection pool library.

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For detailed documentation that includes this code sample, see the following:

• Manage database connections

Code sample

Java

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

// Hikari automatically delays between failed connection attempts, eventually reaching a
// maximum delay of `connectionTimeout / 2` between attempts.

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