Which type of AWS database is optimized for scenarios with heavy read traffic and requires high availability of data serving?
Amazon RDS with Read Replicas
Amazon Elastic File System (EFS)
Amazon S3 standard storage class
Amazon DynamoDB without DAX
An Amazon RDS instance that has multiple read replicas is ideal for read-intensive workloads. It allows for the database to handle a large number of read requests by distributing them across several read replicas, thus improving the read throughput and offering high availability. Amazon RDS supports the creation and management of read replicas. Using a solution such as Amazon EFS for heavy read traffic scenarios might not offer the required database-like features like ACID properties and query support. While DynamoDB can also support high read rates, the context here points to the use of read replicas, a feature best associated with RDS in a high-read scenario. S3 is primarily an object storage service and, although it supports high read rates, it is not optimized in the way RDS with read replicas is for database-like read intensive workloads.
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