Amazon DynamoDB
 | |
| Developer(s) | Amazon.com |
|---|---|
| Initial release | 2012 |
| Development status | Active |
| Operating system | Cross-platform |
| Available in | English |
| Type | key-value store |
| License | Proprietary |
| Website |
aws |
Amazon DynamoDB is a fully managed proprietary NoSQL database service that is offered by Amazon.com as part of the Amazon Web Services portfolio.[1] DynamoDB exposes a similar data model and derives its name from Dynamo, but has a different underlying implementation. Dynamo had a multi-master design requiring the client to resolve version conflicts and DynamoDB uses synchronous replication across multiple datacenters[2] for high durability and availability. DynamoDB was announced by Amazon CTO Werner Vogels on January 18, 2012.[3]
Overview
DynamoDB differs from other Amazon services by allowing developers to purchase a service based on throughput, rather than storage. Although the database will not scale automatically, administrators can request more throughput and DynamoDB will spread the data and traffic over a number of servers using solid-state drives, allowing predictable performance.[1] It offers integration with Hadoop via Elastic MapReduce.
In September 2013, Amazon made available a local development version of DynamoDB so developers can test DynamoDB-backed applications locally.[4]
It is said to be "built on the principles of Dynamo" (an internal storage system used initially for their own website).[3]
Language bindings
Languages with a DynamoDB binding include Java, Node.js, C# .NET, Perl, PHP, Python, Ruby, and Erlang.[5]
Performance
DynamoDB exposes performance metrics that helps provision it correctly and to keep applications using DynamoDB running smoothly:
- Requests and throttling
- Errors: ConditionalCheckFailedRequests, UserErrors, SystemErrors
- Metrics related to Global Secondary Index creation[6]
These metrics can be tracked using the AWS Management Console, using the AWS Command Line Interface, or a monitoring tool integrating with Amazon CloudWatch.[7]
References
- 1 2 Clark, Jack (2012-01-19). "Amazon switches on DynamoDB cloud database service". ZDNet. Retrieved 2012-01-21.
- ↑ "FAQs: Scalability, Availability & Durability". Amazon Web Services.
- 1 2 Vogels, Werner (2012-01-18). "Amazon DynamoDB – a Fast and Scalable NoSQL Database Service Designed for Internet Scale Applications". All Things Distributed blog. Retrieved 2012-01-21.
- ↑ "DynamoDB Local for Desktop Development". Amazon Web Services. 12 September 2013. Retrieved 13 September 2013.
- ↑ "Amazon DynamoDB Libraries, Mappers, and Mock Implementations Galore!". Amazon Web Services.
- ↑ "Top DynamoDB performance metrics".
- ↑ "How to collect DynamoDB metrics".
