You can observe whether the client monitoring data is normal, or check various monitoring data of the domain name through the "Statistical Analysis" directory on the left side of the CDN Console, such as access bandwidth, back-to-origin bandwidth, status codes, etc. If there is a significant increase in non-2XX status codes for access and back-to-origin, it indicates that the service may be abnormal. To ensure the current network service is not affected, it is recommended to switch the domain name resolution back to the origin server, find the cause and repair it before switching the CNAME to Tencent Cloud.
