CODEWITHSUNDEEP
amazon-web-servicesamazon-dynamodblistener
Alexander
Alexander

Reputation: 51

Is there any AWS events listener in Java SDK?

I want my local Java application to know that some changes made to the item in AWS DynamoDB table. Is it posible without polling? I understand that I should use DynamoDB Stream to invoke AWS Lamda trigger but what should Lambda function do to send information to my local app? If it's possible.

Upvotes: 1

Views: 476

Answers (1)

Sergey Kovalev
Sergey Kovalev

Reputation: 9431

In my opinion Lambda is not a good fit here. AWS provides reference architectures that will meet your needs. Usually it goes like this:

DynamoDB Stream -> Kinesis Adapter for DynamoDB Streams -> Kinesis Client Library

Take a closer look at these documents: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.KCLAdapter.html https://aws.amazon.com/blogs/database/dynamodb-streams-use-cases-and-design-patterns/

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You can also design your app as this (the top part) and consume events from SQS long polling, but using Kinesis Client Library seems more straightforward and easier:

enter image description here

Upvotes: 1

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