What is MemoryDB

Amazon MemoryDB is a durable, in-memory database service that delivers ultra-fast performance. It is purpose-built for modern applications with microservices architectures.

Amazon MemoryDB is compatible with the popular open source data stores Valkey and Redis OSS, enabling you to quickly build applications using the same flexible and friendly data structures, APIs, and commands that they already use. With MemoryDB, all of your data is stored in memory, which enables you to achieve microsecond read and single-digit millisecond write latency and high throughput. MemoryDB also stores data durably across multiple Availability Zones (AZs) using a Multi-AZ transactional log to enable fast failover, database recovery, and node restarts.

Delivering both in-memory performance and Multi-AZ durability, MemoryDB can be used as a high-performance primary database for your microservices applications, eliminating the need to separately manage both a cache and durable database.