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Amazon CLF-C02: Which AWS Service is Best for Cloud-Compatible In-Memory Data Store?

By: Author Alex Lim

Posted on

Categories Exam

Discover the ideal AWS service for cloud-compatible in-memory data storage. Learn why Amazon ElastiCache is the best choice for caching and boosting application performance.

Question

For cloud-compatible in-memory data store, which AWS service should be used?

A. Amazon DynamoDB
B. Amazon ElastiCache
C. Amazon EBS
D. Amazon Redshift

Answer

B. Amazon ElastiCache

Explanation

Amazon ElastiCache offers scalable in-memory data store solutions, compatible with open-source engines.

Amazon ElastiCache is the correct choice for a cloud-compatible in-memory data store. It is a fully managed service designed to enhance application performance by providing sub-millisecond latency and high throughput. ElastiCache supports two popular open-source caching engines—Redis and Memcached—making it versatile for various use cases.

Why Amazon ElastiCache?

Amazon ElastiCache is purpose-built for in-memory caching and data storage, offering the following benefits:

  • Performance Optimization: By storing frequently accessed data in memory, ElastiCache reduces the need to query slower disk-based databases, significantly improving response times.
  • Scalability: Automatically scales to meet application demands, supporting millions of requests per second.
  • Use Cases: Ideal for session stores, gaming leaderboards, real-time analytics, geospatial services, and caching database queries.
  • Fully Managed: AWS handles tasks such as provisioning, monitoring, patching, and backups, allowing developers to focus on application logic.

Key Features of Amazon ElastiCache

  1. Sub-Millisecond Latency: Ensures fast retrieval of cached data.
  2. High Availability: Offers automatic failover with multi-AZ configurations.
  3. Engines Supported: Redis (for complex data structures) and Memcached (for simple key-value caching).
  4. Cost Efficiency: Reduces database load by offloading frequent queries to the cache layer.

For applications requiring a high-performance in-memory data store or cache, Amazon ElastiCache is the optimal AWS service choice.

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