SQL Server 2019 Read Write Routing URL

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SQL Server 2019 Read Write Routing URL 


SQL Server 2019 introduces a new feature for Availability Groups that addresses the challenges of read/write connection redirection. With this feature, client applications can connect to any replica of the Availability Group, and the connection will be automatically redirected to the primary replica based on the Availability Group configuration and the connection intent specified in the connection string.

 

In previous versions of SQL Server, an administrator had to configure the Availability Group listener (and the corresponding cluster resource) to direct SQL Server traffic to the primary replica to ensure that clients were reconnected to the active primary node in the event of failover. However, not all cluster technologies that support SQL Server Availability Groups offered a listener-like capability, making this process more complicated.

 

The secondary-to-primary replica connection redirection feature in SQL Server 2019 allows client applications to connect to any replica of the Availability Group without requiring additional configuration. Depending on the configuration of the Availability Group replica and the settings in the connection string, the connection can be automatically redirected to the primary replica. This new feature offers greater flexibility and ease of use compared to previous versions.

 

To configure read/write connection redirection, set the READ_WRITE_ROUTING_URL option for the primary replica when creating the Availability Group. This option ensures that the connection is redirected to the primary replica for read/write operations, improving performance and reducing the risk of data loss.

 

In conclusion, SQL Server 2019's new feature for Availability Groups makes read/write connection redirection simpler and more flexible than ever before. With this new capability, client applications can connect to any replica of the Availability Group, and the connection will be automatically redirected to the primary replica based on the configuration and intent specified in the connection string. By setting the READ_WRITE_ROUTING_URL option for the primary replica, administrators can further optimize performance and reduce the risk of data loss.


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