AWS DynamoDB

What is AWS DynamoDB?

AWS DynamoDB is a serverless, fully managed NoSQL database designed for high availability and scalability. It provides low-latency performance and supports both key-value and document-based data models.

Key Features of AWS DynamoDB

• NoSQL Database : Supports unstructured, semi-structured, and structured data.
• Serverless : No need to manage hardware, provisioning, or maintenance.
• Automatic Scaling : Adjusts read and write capacity based on demand.
• Multi-Region Replication : Ensures global availability and disaster recovery.
• In-Memory Caching : DynamoDB Accelerator (DAX) provides faster read performance.
• Fine-Grained Security : Uses IAM policies for access control and encryption.

What is a Non-Relational Database?

A non-relational database does not use tables, rows, or fixed schemas like traditional relational databases. Instead, it stores data in key-value pairs, documents, graphs, or wide-column formats.

How Data is Stored in DynamoDB?

DynamoDB stores data as items in tables. Each item is a collection of attributes stored as key-value pairs.

Example: Storing User Profiles in DynamoDB

Each item can have different attributes, and you can add or remove attributes without affecting other items.

Why Use AWS DynamoDB?

• High Performance – Delivers single-digit millisecond response times.
• Scalable – Handles millions of requests per second.
• Flexible Schema – Easily adapts to changing data structures.
• Cost-Effective – Pay for what you use with on-demand or provisioned capacity.

DynamoDB Use Cases

• E-commerce – Store product catalogs and user sessions.
• Gaming – Maintain player profiles and leaderboards.
• IoT – Process real-time sensor data.
• Serverless Applications – Manage user authentication and event-driven workflows.

AWS DynamoDB simplifies data management, making it an excellent choice for modern, high-performance applications.