A Developer is asked to implement a caching layer in front of RDS. Cached content is expensive to regenerate in case of service failure.
Which implementation below would work while maintaining maximum uptime?
A . Implement ApsaraDB for Redis in Cluster Mode
B . Install Redis on an ECS instance
C . Implement ApsaraDB for Redis in Standard Mode
D . Migrate the ROS database to HBase to save the cache layer
Answer: A
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