Which AWS service offers a fully managed, Redis-compatible in-memory cache that you can use to accelerate application performance by storing frequently accessed data in memory?
Amazon MemoryDB for Redis
Amazon ElastiCache for Redis
Amazon Relational Database Service (RDS)
Amazon DynamoDB
Amazon ElastiCache for Redis is designed as a managed, Redis-compatible in-memory cache. It lets you offload frequently accessed data from primary databases, providing sub-millisecond latency for real-time applications. Amazon MemoryDB for Redis is also Redis-compatible and in-memory, but it is positioned as a durable primary database rather than a cache. Amazon RDS is a disk-based relational database service, and Amazon DynamoDB is a NoSQL database that can integrate with an optional cache (DAX) but is not itself an in-memory cache.
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