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Target customers: customers who are sensitive to connection interruptions, customers who have a large number of read requests and a small number of write requests need to be processed, and customers who use PHP with high concurrency and have high security requirements. Features released: The database proxy is a high-performance database middleware service provided by ApsaraDB RDS. It is secure, stable, fully compatible with database protocols, and transparent to applications. In specific scenarios, the database proxy can enhance instance stability, robustness, and security. The following features are supported: Transparent switchover: When an RDS instance fails or the instance type is upgraded or downgraded, the feature can ensure a smooth switchover and reduce the impact on applications. Read/write splitting: The process is transparent to the application layer, eliminating the need to modify application code. Queries are distributed to read-only RDS instances to reduce the load on the primary instance. Short-lived connection optimization: Burstable high-concurrency short-lived connections can be buffered at the proxy layer to relieve the impact on the database layer, reduce the CPU utilization and connections per second (CPS), and ensure database stability. For example, most PHP programs use short-lived connections to connect to databases. Brute-force attack protection: The feature protects RDS instance accounts from brute-force attacks.