Table of Contents
Does AWS DynamoDB scale automatically?
If you use the AWS Management Console to create a table or a global secondary index, DynamoDB auto scaling is enabled by default. You can modify your auto scaling settings at any time.
What are the advantages of Auto Scaling DynamoDB?
Benefits of Auto-Scaling Automatically Maintain Performance: It maintains flawless application performance and availability, even when workloads are periodic, unpredictable, or continuously changing. It continually monitors your applications to make sure that they’re operating at your required performance levels.
Is Auto Scaling default with DynamoDB?
Auto Scaling will be on by default for all new tables and indexes, and you can also configure it for existing ones. Even if you’re not around, DynamoDB Auto Scaling will be monitoring your tables and indexes to automatically adjust throughput in response to changes in application traffic.
How does DynamoDB stream work?
DynamoDB Streams captures a time-ordered sequence of item-level modifications in any DynamoDB table and stores this information in a log for up to 24 hours. Applications can access this log and view the data items as they appeared before and after they were modified, in near-real time.
What is the difference between Auto Scaling and load balancing?
Auto Scaling is used for automatic scaling up and scaling down. Loadbalancer used to distribute the incoming traffic across multiple targets.
What is the difference between Kinesis stream and DynamoDB stream?
Kinesis Streams allows you to produce and consume large volumes of data(logs, web data, etc), whereas DynamoDB Streams is a feature local to DynamoDB that allows you to track the granular changes to your DynamoDB table items.
Are DynamoDB streams reliable?
DynamoDB provides two Change Data Capture (CDC) approaches to capture changes from a table. In this post, I’ll introduce you to DynamoDB streams as a reliable CDC mechanism, how it works, and what ways you can consume change events from it.
Can Auto Scaling work without load balancer?
Yes, you can use Auto Scaling without Elastic Load Balancing. However, it means that you don’t have a common entry point, so it isn’t ideal if you will be, say, hosting a website.
What is DynamoDB streams used for?
DynamoDB Streams is a powerful service that you can combine with other AWS services to solve many similar issues. When you enable DynamoDB Streams, it captures a time-ordered sequence of item-level modifications in a DynamoDB table and durably stores the information for up to 24 hours.
Is DynamoDB streams expensive?
The primary cost factor for DynamoDB Streams is the number of API calls we make. DynamoDB’s pricing allows users 2.5 million free API calls and charges $0.02 per 100,000 requests beyond that.
What is a benefit of using AWS Auto Scaling?
AWS Auto Scaling lets you build scaling plans that automate how groups of different resources respond to changes in demand. You can optimize availability, costs, or a balance of both. AWS Auto Scaling automatically creates all of the scaling policies and sets targets for you based on your preference.
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 does AWS application auto scaling work with CloudWatch alarms?
When an alarm is triggered, the CloudWatch alarm invokes AWS Application Auto Scaling, which in turn notifies DynamoDB to adjust the table’s provisioned throughput capacity. DynamoDB auto scaling modifies provisioned throughput only when the workload stays depressed or elevated for several minutes.
How do I manage DynamoDB scale-in and scale-out?
For more advanced features like setting scale-in and scale-out cooldown times, use the AWS Command Line Interface (AWS CLI) to manage DynamoDB auto scaling. For more information, see Using the AWS CLI to Manage DynamoDB Auto Scaling .
How often can I increase read and write capacity in DynamoDB?
DynamoDB auto scaling can increase read capacity or write capacity as often as necessary, in accordance with your auto scaling policy. All DynamoDB quotas remain in effect, as described in Service, Account, and Table Quotas in Amazon DynamoDB .