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Answer: Purchase reserved instances for the entire workload and scale up the RDS PostgreSQL instance.
The most cost-effective solution is to buy reserved DB instances for the total workload and make the Amazon RDS for PostgreSQL DB instance larger. Reserved instances provide a significant discount compared to on-demand pricing, which helps in reducing costs. Scaling up the instance ensures that the increased workload is accommodated without the need for additional infrastructure. In contrast, Multi-AZ deployment (Option B) adds redundancy rather than capacity, and simply adding another instance (Option C) or switching to an on-demand model (Option D) would not be as cost-effective.
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A company has migrated its PostgreSQL database to Amazon RDS. With the launch of a new product, the database workload has surged. The company seeks a cost-effective solution to handle the increased load without procuring additional infrastructure. What is the most cost-effective approach?
A
Purchase reserved instances for the entire workload and scale up the RDS PostgreSQL instance.
B
Convert the RDS PostgreSQL instance to a Multi-AZ deployment.
C
Acquire reserved instances for the total workload and introduce an additional RDS PostgreSQL instance.
D
Switch the RDS PostgreSQL instance to an on-demand pricing model.
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