A customer's business flow is as follows: E I P->ELB-> ECS-> Middleware (REE DI s&Kafk...

The intelligent DNS service is used to control the traffic of business access, and 100% of the user traffic is diverted to the production center under normal hours, so 100% of the user traffic during the defect period is switched to the disaster recovery center

C. Customers regularly conduct disaster recovery drills through manual/scripted methods

Database primary and standby disaster recovery, one end is the main and the other end is the backup, and the corresponding digital technology can be used for active standby for different database types. It can be done through third-party tools