Question #785
Which AWS service is a graph database designed to efficiently store and query highly connected data with millisecond latency?
Amazon Neptune
Amazon ElastiCache
Amazon Redshift
Amazon RDS
Explanation
Amazon Neptune (A) is a fully managed graph database designed to handle complex, highly connected datasets. It efficiently processes queries on relationships using graph models (property graph or RDF), ensuring millisecond latency. This makes it ideal for use cases like social networks, fraud detection, and recommendation engines.
Other options:
- ElastiCache (B): An in-memory caching service (Redis/Memcached) for temporary data, not a graph database.
- Redshift (C): A data warehouse for analytics, optimized for large-scale queries, not graph-based relationships.
- RDS (D): A relational database service for structured data using tables; not optimized for graph traversal or highly connected data.
Key Point: Neptune specializes in graph-based data with low-latency queries, while other services serve different purposes (caching, analytics, or traditional relational data).
Answer
The correct answer is: A