Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability.
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Amazon DynamoDB is a fully managed NoSQL database service provided by AWS that delivers fast, consistent performance at any scale. It's designed to run high-performance applications requiring single-digit millisecond latency, even with massive data volumes.
Key features of DynamoDB include:
1. Serverless architecture - No servers to provision, patch, or manage
2. Automatic scaling - Adapts to application traffic increases and decreases
3. Built-in security - Fine-grained access control with AWS IAM
4. Backup and restore - Point-in-time recovery and on-demand backups
5. Global tables - Multi-region, multi-active database for global applications
DynamoDB stores data in tables containing items (rows) with attributes (columns). Unlike traditional relational databases, it doesn't require a fixed schema, allowing each item to have different attributes. Every table requires a primary key that uniquely identifies each item.
For data modeling, DynamoDB supports:
- Simple primary keys (partition key only)
- Composite primary keys (partition key + sort key)
- Secondary indexes for flexible querying
DynamoDB offers two capacity modes:
1. Provisioned - You specify read/write capacity units
2. On-demand - Pay-per-request pricing for unpredictable workloads
Advanced features include:
- Transactions for all-or-nothing operations
- DynamoDB Streams for capturing data modifications
- DynamoDB Accelerator (DAX) for microsecond response times
- Time to Live (TTL) for automatic item expiration
Common use cases include mobile apps, gaming, IoT, ad tech, and any application needing low-latency data access at scale. DynamoDB integrates seamlessly with other AWS services like Lambda for serverless architectures and Kinesis for real-time data processing.Amazon DynamoDB is a fully managed NoSQL database service provided by AWS that delivers fast, consistent performance at any scale. It's designed to run high-performance applications requiring single-digit millisecond latency, even with massive data volumes.
Key features of DynamoDB include:
1. Se…