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Amazon CLF-C02: Which AWS Database Service Provides In-Memory Data Store?

By: Author Alex Lim

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Discover which AWS database service offers an in-memory data store for ultra-fast performance. Learn why Amazon ElastiCache is the optimal choice for caching and real-time applications.

Question

Which AWS database service provides in-memory data store?

A. Amazon DynamoDB
B. Amazon ElastiCache
C. Amazon RDS
D. Amazon Timestream

Answer

B. Amazon ElastiCache

Explanation

The correct answer is B because Amazon ElastiCache is a service that provides in-memory data store.

Amazon ElastiCache is a fully managed in-memory data store and caching service provided by AWS. It supports two popular open-source engines: Redis and Memcached, both designed to deliver microsecond response times, making it ideal for use cases requiring low latency and high throughput.

Why Amazon ElastiCache?

  • In-Memory Data Store: ElastiCache stores data directly in memory (RAM), enabling ultra-fast data access without the need to read from disk storage, which significantly reduces latency.
  • Caching Capabilities: It is primarily used as a caching layer to offload database workloads, improving application speed and reducing costs. This is particularly beneficial for read-heavy operations.
  • Use Cases: Common use cases include session stores, gaming leaderboards, real-time analytics, and caching database queries.
  • Performance: With microsecond read latency and single-digit millisecond write latency, ElastiCache can handle millions of operations per second, making it suitable for demanding applications.
  • Scalability & High Availability: It allows seamless scaling to meet fluctuating demands and ensures high availability through features like automatic failover.

For applications requiring an in-memory data store with sub-millisecond performance, Amazon ElastiCache is the best choice among AWS database services. It provides the speed and scalability needed for modern real-time applications while being fully managed to reduce operational overhead.

Which AWS Database Service Provides In-Memory Data Store?

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