DBS-C01 · Question #328
A company has an existing system that uses a single-instance Amazon DocumentDB (with MongoDB compatibility) cluster. Read requests account for 75% of the system queries. Write requests are expected to
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Question
A company has an existing system that uses a single-instance Amazon DocumentDB (with MongoDB compatibility) cluster. Read requests account for 75% of the system queries. Write requests are expected to increase by 50% after an upcoming global release. A database specialist needs to design a solution that improves the overall database performance without creating additional application overhead. Which solution will meet these requirements?
Options
- ARecreate the cluster with a shared cluster volume. Add two instances to serve both read requests
- BAdd one read replica instance. Activate a shared cluster volume. Route all read queries to the
- CAdd one read replica instance. Set the read preference to secondary preferred.
- DAdd one read replica instance. Update the application to route all read queries to the read replica
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