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DynamoDB - Interview Questions
What is Amazon DynamoDB?
Amazon DynamoDB is a fully managed NoSQL database service provided by Amazon Web Services (AWS). It is designed to provide fast and predictable performance with seamless scalability. DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale. It is suitable for applications that require consistent, single-digit millisecond latency and can handle large volumes of data with high throughput.

Key features of DynamoDB :

Fully Managed Service : DynamoDB is a fully managed service, meaning AWS handles administrative tasks such as hardware provisioning, setup, configuration, replication, software patching, and scaling. This allows developers to focus on building their applications rather than managing infrastructure.

Scalability : DynamoDB is designed to scale horizontally without limits. It can automatically distribute data and traffic across servers to accommodate growing workloads, ensuring consistent performance as the application grows.

High Availability and Durability : DynamoDB replicates data across multiple Availability Zones within a region to ensure high availability and fault tolerance. It also provides backup and restore capabilities for data durability.

Performance : DynamoDB offers single-digit millisecond latency for read and write operations, making it suitable for real-time applications that require low-latency responses.

Flexible Data Model : DynamoDB supports both key-value and document data models. It allows flexible schema definition, enabling developers to store structured, semi-structured, or unstructured data.

Security and Compliance : DynamoDB provides security features such as encryption at rest and in transit, fine-grained access control using AWS Identity and Access Management (IAM), and integration with AWS Key Management Service (KMS). It is also compliant with various industry standards and regulations.

Pay-Per-Use Pricing Model : DynamoDB offers a pay-per-use pricing model, where customers only pay for the resources they consume, such as storage, throughput capacity, and data transfer.
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