Databases - Elasticache

Question 1

Elasticache can be used for

Answer 1

improving application performance/latency/throughput for many read-heavy apps by storing critical pieces of data in memory for low-latency access (social networking, gaming, media sharing, Q/A portals)

Question 2

Memcached

Answer 2

memory object caching system

Question 3

Redis

Answer 3

open source in-memory key-value store that support data structures such as sorted sets and lists.

Question 4

Elasticache supports

Answer 4

Master/slave replication, multi-AZ

Question 5

If a database is under a lot of stress, which service would you use?

Answer 5

Elasticache if read heavy and not prone to frequently changing

Redshift if reason for stress is OLAP