Amazon MemoryDB delivers Redis-like, microsecond-speed performance with database-grade durability. It combines in-memory speed with Multi-AZ data safety in a single service, so you don’t need to run a separate cache and database. Review collected by and hosted on G2.com.

1. Costly You’re essentially paying for both durability and memory, which makes it noticeably more expensive than using ElastiCache Redis as a cache-only option.

2. Higher write latency than a pure cache Write operations tend to land in the single-digit millisecond range rather than the microseconds you’d expect from Redis, because MemoryDB also has to log to disk. Review collected by and hosted on G2.com.