A. Amazon DynamoDB: A key-value and document database that provides single-digit millisecond latency at any scale. It is a fully managed NoSQL database service designed for applications that require consistent, single-digit millisecond latency, regardless of the volume of requests.
B. Amazon Aurora: A MySQL and PostgreSQL-compatible relational database engine that offers high performance and availability. While it provides low-latency reads, it is not specifically designed as a key-value database.
C. Amazon DocumentDB (with MongoDB compatibility): A fully managed document database service that is compatible with MongoDB. It is designed for applications that work with JSON-like documents, and it provides the scalability and availability of a NoSQL database.
D. Amazon Neptune: A fully managed graph database service that supports graph models. It is designed for applications with highly connected data, and it is not specifically focused on providing sub-millisecond latency for key-value access.
A. Amazon DynamoDB: A key-value and document database that provides single-digit millisecond latency at any scale. It is a fully managed NoSQL database service designed for applications that require consistent, single-digit millisecond latency, regardless of the volume of requests.
A. Amazon DynamoDB
Amazon DynamoDB is a fully managed NoSQL database service that offers seamless scalability and high performance. It provides consistent, single-digit millisecond latency at any scale, making it ideal for applications requiring fast and predictable performance, such as real-time bidding, gaming, and IoT.
A. Amazon DynamoDB: A key-value and document database that provides single-digit millisecond latency at any scale. It is a fully managed NoSQL database service designed for applications that require consistent, single-digit millisecond latency, regardless of the volume of requests.
A is correct
Fully Managed Highly available with replication across 3 AZ
• NoSQL database - not a relational database
• Scales to massive workloads, distributed “serverless” database
• Millions of requests per seconds, trillions of row, 100s of TB of storage
• Fast and consistent in performance
• Single-digit millisecond latency – low latency retrieval
• Integrated with IAM for security, authorization and administration
• Low cost and auto scaling capabilities
A- Because Amazon DynamoDB is a nonrelational database that delivers reliable performance at any scale. It's a fully managed, multi-region, multi-master database that provides consistent single-digit millisecond latency, and offers built-in security, backup and restore, and in-memory caching.
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