How should a solutions architect design the architecture on AWS?
Provision an Amazon RDS for MySQL DB instance with Provisioned IOPS SSD storage. Monitor write operation metrics by using Amazon CloudWatch. Adjust the provisioned IOPS if necessary.
Provision an Amazon RDS for MySQL DB instance with General Purpose SSD storage. Place an Amazon ElastiCache cluster in front of the DB instance. Configure the application to query ElastiCache instead.
Provision an Amazon DocumentDB (with MongoDB compatibility) instance with a memory optimized instance type. Monitor Amazon CloudWatch for performance-related issues. Change the instance class if necessary.
Provision an Amazon Elastic File System (Amazon EFS) file system in General Purpose performance mode. Monitor Amazon CloudWatch for IOPS bottlenecks. Change to Provisioned Throughput performance mode if necessary.
Explanations:
Provisioning an Amazon RDS for MySQL with Provisioned IOPS SSD storage allows for higher and consistent IOPS, which is ideal for high write operations. Monitoring with CloudWatch provides insights to adjust IOPS as needed, addressing potential performance issues effectively.
While using General Purpose SSD storage is acceptable, placing an ElastiCache cluster in front may not fully address the high volume of write operations, as ElastiCache is primarily designed for caching read requests and may not significantly alleviate write load on the database.
Amazon DocumentDB is not suitable for a MySQL database as it is designed for document-oriented data and has a different underlying architecture. It would not effectively address the performance issues of a MySQL database, especially with high write operations.
Amazon EFS is not suitable for running a MySQL database as it is a file storage service rather than a database service. Additionally, using EFS would likely introduce latency and performance issues, which contradicts the requirement for handling high write operations effectively.
I assess that the answer is:
Provision an Amazon RDS for MySQL DB instance with Provisioned IOPS SSD storage. Monitor write operation metrics by using Amazon CloudWatch. Adjust the provisioned IOPS if necessary.