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Answer: Implement Amazon RDS read replicas to balance read traffic and maintain availability.
The correct answer is A: 'Implement Amazon RDS read replicas to balance read traffic and maintain availability.' Implementing Amazon RDS read replicas is a proven solution for distributing read traffic across multiple database instances, which helps in reducing the load on the primary database. This approach also ensures high availability and allows for better performance during high read workloads. Options B and D involve using ElastiCache for caching, which can also help reduce read operations, but read replicas are specifically designed for database read scaling and ensuring availability. Option C, which involves DNS caching, is not relevant to reducing database read operations.
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How can a solutions architect reduce database read operations and ensure high availability for a batch application using Amazon EC2 and RDS?
A
Implement Amazon RDS read replicas to balance read traffic and maintain availability.
B
Deploy Amazon ElastiCache for Redis to cache frequent read queries, thereby decreasing direct database reads.
C
Leverage Amazon Route 53 DNS caching to enhance DNS response times, unrelated to database read operations.
D
Utilize Amazon ElastiCache for Memcached to store and retrieve data quickly, reducing the need for frequent database access.
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