The default specifications of PolarProxy Enterprise Edition are sufficient for most application scenarios that you may encounter. However, when you perform stress tests or have high service throughput, you should consider upgrading the specifications of PolarProxy Enterprise Edition to meet your business requirements. This topic describes the procedure to upgrade PolarProxy.
Background information
- For Standard Enterprise Edition clusters, the number of vCPUs of the cluster nodes occupied by PolarProxy is rounded up from one sixth of the total vCPUs of the cluster nodes. It is rounded up to the nearest multiple of 2. The number of vCPUs can be 2 to 64.
- For Dedicated Enterprise Edition clusters, the number of vCPUs of the cluster nodes occupied by PolarProxy is rounded up from one fourth of the total vCPUs of the cluster nodes. It is rounded up to the nearest multiple of 2. The number of vCPUs can be 2 to 128.
For example, a Dedicated Enterprise Edition cluster has two nodes, and each node has four vCPUs. In this case, PolarProxy occupies two vCPUs.
Precautions
During the upgrade, new sessions are established to the new PolarProxy. Sessions established to the original PolarProxy are automatically closed 24 hours after the upgrade starts. We recommend that you perform this upgrade operation during off-peak hours and make sure that your applications can automatically reconnect to the database service.
Procedure
This topic takes PolarProxy Enterprise Edition as an example to describe the procedure to upgrade PolarProxy.