Which of the following items belongs to the optimization idea of high concurrency business? (Single selection)
A.
Database: Use active/standby synchronization of the database cluster to select appropriate database products in different scenarios.
B.
Data access: cache duplicate queries and forward requests to backend data clusters.
C.
Business logic: a cluster with dynamic and elastic expansion of services, and parallel synchronization capabilities for different services, protecting the availability of the system under extreme conditions.
Chosen Answer:
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