1. Name a few reasons for implementing caching in our applications.
2. What engines does ElastiCache support?
3. What is the difference between the ElastiCache engines when it comes to data?
4. An application is storing HTTP sessions in the local memory. How can we improve the availability of this application?
5. You need to store your data in a write-through manner to keep as much data as possible cached. One part of your application needs to perform complex transactions using the SQL query language on the cache. Which engine would you choose for this setup?
6. You have a multi threaded application using Redis. An administrator recommends adding three more Redis read/write nodes to the cluster. How will this improve the performance of the application?
7. During the workday, your application is using Memcached to store transaction responses using lazy loading. Every night, your BI system needs to replay a lot of these transactions for the end-of-day analysis. Your managers are complaining about getting data that is several days old whenever the BI system runs. How would you fix this problem?