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What is read intent in always on?
Read intent only: This setting allows Read-Only workloads when running as a secondary role only if the application connection string contains the parameter: Application Intent = Read-Only.
What is read-intent in SQL Server?
Read-Only Routing allows SQL Server to route the incoming read-intent connections that connect to the availability group listener to be served by the available readable secondary replica. The ALLOW_CONNECTIONS property of the read-only routing can be set to READ_ONLY or ALL.
What is Application intent?
An Intent is a messaging object you can use to request an action from another app component. Although intents facilitate communication between components in several ways, there are three fundamental use cases: Starting an activity. An Activity represents a single screen in an app.
When is application intent property set to readonly?
When the Application Intent property is set to ReadWrite or the Application Intent connection property is not set, the connection is allowed. Connections where the Application Intent connection property is set to ReadOnly are not allowed. This can help prevent customers from connecting a read-intent work load to the primary replica by mistake.
What are availability groups and read-intent secondaries?
Availability Groups and Read-Intent Secondaries July 21, 2018 Jen McCown One of the perks of a SQL Server AlwaysOn* Availability Group (AG) is that the secondary nodes can handle read-only traffic. If this is configured correctly, the AG Listener will direct traffic marked “Read-Intent” to the secondary node.
How does read-intent secondaries work in AG?
If this is configured correctly, the AG Listener will direct traffic marked “Read-Intent” to the secondary node. But we have to make sure we’ve configured things properly, both on setup, and when failing over, adding a new node, or removing a node.
What happens when application intent is not used?
If it is, the application intent property will be ignored and the connection will be directed to the primary. The following sample code demonstrates that if the legacy ODBC or SQL OLE DB drivers are used, application intent is not utilized and your application will be connected to the primary replica.