Related services

ElastiCache is a service that is commonly used to cache data from other databases and data stores using Valkey, Memcached, or Redis OSS. You should consider ElastiCache for caching workloads where you want to accelerate data access with your existing primary database or data store (microsecond read and write performance). You should also consider ElastiCache for use cases where you want to use Valkey or Redis OSS data structures and APIs to access data stored in a primary database or data store.

ElastiCache can also help you save database costs by storing frequently accessed data in a cache. If your application has high read throughput requirements, you can achieve high scale, fast performance, and lowered data storage costs by using ElastiCache, instead of scaling your underlying database.

With durability enabled, ElastiCache for Valkey can also serve as a durable datastore with microsecond read latency and single-digit millisecond write latency (synchronous writes) or microsecond write latency (asynchronous writes). For more information, see Durability in ElastiCache.

MemoryDB is a durable, in-memory database for workloads that require an ultra-fast, primary database. It is compatible with Valkey and Redis OSS. You should consider using MemoryDB if your workload requires multi-Region active-active replication with conflict-free data types (CRDTs). For single-Region durable workloads, consider using ElastiCache with durability enabled.