Cache Offerings

• ElastiCache comes in two offering,

  • Redis

  • Memcached

• The below table summarizes some of the features offered by both offerings.

Redis	Memcached
Multi-AZ with Auto-Failover	Uses sharding to partition the data
Read Replicas to scale reads and have high availability	No replication, hence no HA
Data durability using AOF persistence	No persistence
BackUp and restore	No backup and restore
Supports Sets and Sorted Sets	Multi-threaded architecture

MemoryDB for Redis

• An in memory database that has Redis compatible API and is durable.

• Ultra fast performance with over 160 million requests/second.

• Durable in-memory data storage with Multi-AZ transactional log.

• Scale seamlessly from 10s of GB to 100s of TB storage.