Review

Let's now practice a few exam-style questions:

1. An application development team complains that they are experiencing performance issues with ElastiCache Redis. You discover that the performance issues occur during the automated backup window. What actions can you take to improve backup performance? (Select two.)
   1. Schedule an automated backup window to occur at midnight.
   2. Set the reserved-memory-percentage parameter.
   3. Create backups from a read replica.
   4. Create additional read replicas.
   5. Increase the number of shards.
2. An application team wishes to use ElastiCache Redis to improve its application performance. The application has a requirement that the data must always be the most recent. Which caching strategy should the team utilize?
   1. Write-through
   2. Lazy loading
   3. Cache-aside
   4. Read-through
3. You are advising a company on how to plan a deployment of ElastiCache Redis with cluster mode disabled. What is the maximum number of shards and read replicas that the cluster can have?
   1. 1 shard...