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How can a company minimize database downtime for an online shopping application using Amazon RDS for PostgreSQL without altering application code?
How can a company minimize database downtime for an online shopping application using Amazon RDS for PostgreSQL without altering application code?
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Explanation:
The correct answer is A: Modify the existing instance to Multi-AZ deployment. This approach converts the current Single-AZ DB instance to a Multi-AZ deployment, providing high availability and automatic failover support without requiring any changes to the application code. It minimizes downtime by ensuring that the database remains available even if one Availability Zone fails.