Is DynamoDB scalable?

Amazon DynamoDB is based on the principles of Dynamo, a progenitor of NoSQL, and brings the power of the cloud to the NoSQL database world. It offers customers high-availability, reliability, and incremental scalability, with no limits on dataset size or request throughput for a given table.

Can DynamoDB scale down?

Auto Scaling for dynamo DB will now scale down your provisioned capacity if your table’s consumed capacity becomes zero.

Does DynamoDB have TTL?

Amazon DynamoDB TTL allows you to define a per-item timestamp to determine when an item is no longer needed. After the expiration of the TTL timestamp, DynamoDB deletes the item from your table within 48 hours without consuming any write throughput.

How fast can DynamoDB scale?

While these steps highlight just one cycle of auto-scaling resources, DynamoDB can actually scale up resources multiple times a day in accordance with the defined auto-scaling policy. However, there is a defined limit to how many times a day the read and write capacity units can be decreased—up to 4 times a day.

Is Dynamo a DB acid?

DynamoDB is not ACID compliant. It only provides the ‘C’ (consistency) and ‘D’ (durability) in ACID. Here is an example of how to achieve ACID on top of DynamoDB, but this makes the application architecture very complex.

What is DynamoDB auto scaling?

Amazon DynamoDB auto scaling uses the AWS Application Auto Scaling service to dynamically adjust provisioned throughput capacity on your behalf, in response to actual traffic patterns. When the workload decreases, Application Auto Scaling decreases the throughput so that you don’t pay for unused provisioned capacity.

What is Application Auto Scaling?

Application Auto Scaling is a web service for developers and system administrators who need a solution for automatically scaling their scalable resources for individual AWS services beyond Amazon EC2. Application Auto Scaling allows you to configure automatic scaling for the following resources: AppStream 2.0 fleets.

What is Amazon TTL?

Amazon DynamoDB Time-to-Live (TTL) enables you to automatically delete expired items from your tables, at no additional cost. Now, you no longer need to deal with the complexity and cost of manually scanning your tables and deleting the items that you don’t want to retain.

What is auto scaling in DynamoDB?

What is Amazon DynamoDB auto scaling?

Amazon DynamoDB auto scaling uses the AWS Application Auto Scaling service to dynamically adjust provisioned throughput capacity on your behalf, in response to actual traffic patterns. This enables a table or a global secondary index to increase its provisioned read and write capacity to handle sudden increases in traffic, without throttling.

How do I scale my DynamoDB tables?

You can configure Dynamic DynamoDB to scale your tables up and down automatically, and you can restrict scaling activities to certain time slots. You can scale read and write throughput capacity independently using upper and lower thresholds, and you can set minimums and maximums for each value. Finally, Dynamic DynamoDB supports a circuit-breaker.

How does Amazon DynamoDB work?

Amazon DynamoDB is a fully managed NoSql database. When you create a DynamoDB table, you provision the desired amount of request capacity based on the expected amount of read and write traffic, and average size of each item. This provisioned capacity can be changed based on the changes in application requirements.

What AWS credentials do I need to set up dynamic DynamoDB?

Because Dynamic DynamoDB makes calls to the DynamoDB API on your behalf, the template prompts you for your AWS credentials: As always, use of an IAM user is advised. You’ll need full access to DynamoDB APIs and resources, and read-only access to CloudWatch APIs and resources.