Implement exponential backoff when using ADO.NET

Retry a failed connection by using exponential backoff when connecting to Cloud SQL for PostgreSQL by using ADO.NET with the Polly .NET library.

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

Code sample

C#

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

Policy
    .Handle<NpgsqlException>()
    .WaitAndRetry(new[]
    {
        TimeSpan.FromSeconds(1),
        TimeSpan.FromSeconds(2),
        TimeSpan.FromSeconds(5)
    })
    .Execute(() => connection.Open());

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