Set the connection duration when using ADO.NET

Configure the maximum number of seconds a connection can persist when connecting to Cloud SQL for MySQL by using the ADO.NET Connection object.

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

Code sample

C#

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

// ConnectionLifeTime sets the lifetime of a pooled connection
// (in seconds) that a connection lives before it is destroyed
// and recreated. Connections that are returned to the pool are
// destroyed if it's been more than the number of seconds
// specified by ConnectionLifeTime since the connection was
// created. The default value is zero (0) which means the
// connection always returns to pool.
connectionString.ConnectionLifeTime = 1800; // 30 minutes

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