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Product introduction: ApsaraDB RDS for SQL Server allows you to manage read-only instances and provides a read/write splitting endpoint to automatically distribute read requests to all read-only instances based on weights. If a large number of read requests overwhelm the primary instance, your business may be interrupted. In this situation, you can create one or more read-only instances to offload read requests from the primary instance and increase read capabilities of your database system. Features released: Prices of read-only dedicated instances of ApsaraDB RDS for SQL Server 2017 are reduced by 30% per hour.