Chapter 6
Practice Test

You are responsible for optimizing performance of a movie streaming website. Currently, you are working on the search functionality and have discovered that anytime the library database of titles is searched, the load on the database is reaching peak levels. Your current architecture consists of a PostgreSQL database on an extra-large instance. How would you update your architecture to better handle the load? (Choose two.)

1. Re-create the database instance on a larger instance using EBS volumes with provisioned IOPS as the volume type.
2. Add an RDS Multi-AZ setup to increase the read performance of the media library database.
3. Add an ElastiCache store to cache data because searches will often return common data over multiple reads.
4. Shard the database into multiple copies installed on multiple instances.

Which of the following are engines used by ElastiCache?

1. reddit, memcached
2. redis, memcached
3. Sharding, redis
4. memcached, Redshift

Which of the following...