This topic provides answers to some commonly asked questions about dedicated proxies.

After I update the minor engine version of my RDS instance that runs MySQL 5.7, why is the dedicated proxy service still unavailable?

After you update the minor engine version of your RDS instance that runs MySQL 5.7, you must disable the original read/write splitting feature before you can use the dedicated proxy service.

After I enable the dedicated proxy service, do I need to use a dedicated proxy endpoint or the read/write splitting endpoint to implement read/write splitting?

After you enable the dedicated proxy service, the read/write splitting endpoint is the same as the dedicated proxy endpoint that you are using. The backend uses a dedicated proxy endpoint to implement read/write splitting.

I use a dedicated proxy endpoint to connect my application to my database system. What do I do if a connection timeout error is reported?

We recommend that you increase the value of the wait_timeout parameter and then try again.

After I enable the dedicated proxy service, does ApsaraDB RDS reclaim the original endpoints of the primary and read-only RDS instances in my database system?

No, after you enable the dedicated proxy service, ApsaraDB RDS does not reclaim the original endpoints of the primary and read-only RDS instances in your database system.

Does the number of dedicated proxy endpoints vary based on the number of dedicated proxies?

No, the number of dedicated proxy endpoints does not vary based on the number of dedicated proxies. You can apply for more than one dedicated proxy endpoint even if you have enabled only one dedicated proxy. For more information, see Create a proxy endpoint for a dedicated proxy.

Which architecture do dedicated proxies work in? And does this architecture provide a failover mechanism?

Dedicated proxies work in the high availability architecture. In this architecture, each dedicated proxy has a secondary dedicated proxy as a standby. If a dedicated proxy becomes faulty, ApsaraDB RDS fails over your workloads to the secondary dedicated proxy of the faulty dedicated proxy.