Icon source: AWS

CLOUD SERVICE · AWS

Amazon DynamoDB

Amazon DynamoDB is a fully managed NoSQL database service provided by Amazon Web Services (AWS) that offers fast and predictable performance with seamless scalability for applications that need consistent, single-digit millisecond latency at any scale.

Cloud Services Hub →

Free Amazon DynamoDB tools

DynamoDB JSON ConverterConvert DynamoDB JSON to plain JSON and back, and get the code to write the items.Open →Item Size CalculatorCalculate the size of an item and the RCUs and WCUs it consumes.Open →Expression BuilderBuild key condition, filter and update expressions with their placeholders.Open →TTL ConverterConvert TTL epoch timestamps to dates and back, and catch values that never expire.Open →Pricing CalculatorEstimate a table's monthly cost, on-demand and provisioned side by side.Open →

What is Amazon DynamoDB

Read the extensive description

Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. Built to address the limitations of traditional database systems, it offers developers the flexibility of storing and retrieving any amount of data and serving any level of request traffic. DynamoDB is designed to maintain high performance and efficiency even as it scales to accommodate immense datasets and high throughput.

At the core of Amazon DynamoDB is its fully managed nature, which means users do not need to worry about operational tasks such as hardware or software provisioning, setup and configuration, replication, software patching, or cluster scaling. It has a minimal learning curve, enabling developers to start creating new database tables and begin storing data almost instantly. The management console or alternatively, the AWS CLI or SDK offers an intuitive interface for creating and interacting with these tables.

DynamoDB can handle more than 10 trillion requests per day and can support peaks of more than 20 million requests per second, making it a suitable backbone for large-scale mobile, web, gaming, ad tech, IoT, and many other applications. It is designed for durability and fault tolerance, automatically replicating data across multiple AWS Availability Zones to ensure reliability and safety.

One of the noteworthy features of Amazon DynamoDB is its flexible data model. It supports key-value and document data structures, meaning one can use the same service for different applications as needs evolve. Keys identify items, and these items can have one or more attributes, making it a great fit for a variety of data models. DynamoDB supports ACID (Atomicity, Consistency, Isolation, Durability) transactions. This brings a level of reliability to applications that require complete and total accuracy for every transaction. In addition to ACID transactions, it provides consistent, single-digit millisecond response times at any scale. It means applications remain responsive at all times, providing a smooth and predictable user experience.

Another important aspect is the DynamoDB Streams feature, which captures any changes to the items in the tables. The stream data can be used for various needs, such as triggering workflows or alerts when data changes or replicating data across tables or even outside of DynamoDB.

Cost is another realm where DynamoDB presents its strengths. It offers a pay-per-use model with no upfront costs or long-term commitments, which can be a cost-effective option for startups and large enterprises alike. On-demand capacity or provisioned throughput modes are available to control costs while managing performance.

All in all, Amazon DynamoDB's integration with other AWS services, its high availability and durable nature, its security features, including encryption at rest, and its ease of use have established it as a critical component in the ecosystem of web and mobile applications, where performance and scalability are necessary to handle massive scale and rapid growth.

Key Amazon DynamoDB Features

Amazon DynamoDB offers a fully managed, scalable NoSQL database with seamless integration with AWS services, global data replication, event-driven programming, built-in security, high performance, enterprise-level transaction support, along with backup and adaptive capacity features.

Fully Managed NoSQL Database

Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability.

Scalability

DynamoDB allows you to scale your databases up or down without downtime or performance degradation, accommodating for spikes in traffic and ensuring efficiency with provisioned and on-demand capacity modes.

Integrated with AWS

DynamoDB is deeply integrated with other AWS services, such as Lambda, Elastic MapReduce, Data Pipeline, and more, facilitating complex applications and workflows.

Global Tables

DynamoDB's Global Tables feature enables you to have fully replicated tables across different AWS regions, offering low-latency access to data for geographically distributed applications.

Event-Driven Programming

With DynamoDB Streams, you can enable event-driven programming and trigger AWS Lambda functions in response to data changes, which facilitates real-time processing and analytics.

Built-in Security

DynamoDB offers built-in security features such as encryption at rest, fine-grained access control using AWS IAM, and VPC Endpoints to keep data secure and regulate access.

High Performance and Durability

The service is designed for high performance with single-digit millisecond response times and built-in fault tolerance, replicating data across multiple zones for high availability and data durability.

Enterprise-Ready

DynamoDB supports ACID transactions, enabling multiple get and put operations across one or more tables in a single, atomic transaction, which is integral for enterprise-level applications requiring complex transactions.

Backup and Restore

DynamoDB allows you to easily create backups of your tables for archiving or restore your data to any point in time over the last 35 days, which helps in disaster recovery and compliance.

Adaptive Capacity

This feature automatically adjusts to your applicationâs traffic patterns to maintain steady and predictable performance, providing seamless handling of uneven workloads and hot keys.

Amazon DynamoDB Use Cases

Amazon DynamoDB is utilized for a variety of use cases including gaming leaderboards, IoT data storage, web session storage, e-commerce shopping carts, and mobile backends, thanks to its high scalability, performance, and ease of management.

Gaming Leaderboards

Amazon DynamoDB is used for creating high-performance, scalable gaming leaderboards that can handle high throughput and massive storage needs for real-time player rankings.

IoT Data Storage

It serves as a repository for the vast amounts of data generated by IoT devices, providing fast, flexible, and reliable storage that can accommodate the rapid growth and unpredictable nature of IoT data streams.

Session Storage for Web Applications

DynamoDB offers a fast and stateless session storage solution for web applications, allowing for low-latency data access, seamless scalability, and simplified management of session data.

E-commerce Shopping Carts

Online retailers leverage DynamoDB to manage shopping cart data, ensuring quick response times and consistent performance during spikes in customer traffic or large-scale sales events.

Mobile Backends

Developers use DynamoDB to power the backend of mobile applications, taking advantage of its fully managed features, built-in security, and the ability to handle large volumes of low-latency data access requests.

Amazon DynamoDB pricing models

Amazon DynamoDB offers a range of pricing models including Provisioned Throughput, On-Demand Capacity, Reserved Capacity, Data Transfer, and charges for additional features like Streams and Global Tables.

Additional Feature Pricing

DynamoDB charges for additional features such as DynamoDB Streams, backup and restore capabilities, and global tables. These features are priced separately from the capacity costs, based on the amount of data processed or stored.

Data Transfer Pricing

Data transfer in AWS DynamoDB is free for incoming data and for data transfer between DynamoDB and other AWS services within the same region. Outgoing data transfers are charged beyond the free tier limit.

On-Demand Capacity Pricing

With on-demand capacity, there is no need to provision throughput in advance. Customers pay for the read and write requests they actually consume on a per-request basis.

Provisioned Throughput Pricing

This pricing model allows customers to specify the number of reads and writes per second that their application requires. Customers pay for the throughput they provision in terms of read capacity units (RCUs) and write capacity units (WCUs).

Reserved Capacity Pricing

Customers can reserve capacity for their DynamoDB tables and benefit from significant savings over the standard provisioned throughput pricing. This option requires a one-time upfront payment for a term of one or three years, in exchange for a lower rate on the specified capacity during the term.

Services Amazon DynamoDB integrates with

Amazon CloudWatch

Amazon CloudWatch monitors DynamoDB, providing metrics and logs for tables. You can set alarms based on thresholds for activities such as read/write capacity.

Open Amazon CloudWatch →

AWS Lambda

AWS Lambda allows you to run code in response to changes in your DynamoDB tables. You can configure triggers to run your Lambda functions whenever item-level changes in the table occur.

Open AWS Lambda →

Amazon S3

Amazon DynamoDB can export table data to Amazon S3 for backup and archiving purposes. The integration also allows importing data from S3 into DynamoDB tables.

Open Amazon S3 →