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DynamoDB Cookbook

DynamoDB Cookbook

By : Deshpande
3.9 (8)
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DynamoDB Cookbook

DynamoDB Cookbook

3.9 (8)
By: Deshpande

Overview of this book

AWS DynamoDB is an excellent example of a production-ready NoSQL database. In recent years, DynamoDB has been able to attract many customers because of its features like high-availability, reliability and infinite scalability. DynamoDB can be easily integrated with massive data crunching tools like Hadoop /EMR, which is an essential part of this data-driven world and hence it is widely accepted. The cost and time-efficient design makes DynamoDB stand out amongst its peers. The design of DynamoDB is so neat and clean that it has inspired many NoSQL databases to simply follow it. This book will get your hands on some engineering best practices DynamoDB engineers use, which can be used in your day-to-day life to build robust and scalable applications. You will start by operating with DynamoDB tables and learn to manipulate items and manage indexes. You will also discover how to easily integrate applications with other AWS services like EMR, S3, CloudSearch, RedShift etc. A couple of chapters talk in detail about how to use DynamoDB as a backend database and hosting it on AWS ElasticBean. This book will also focus on security measures of DynamoDB as well by providing techniques on data encryption, masking etc. By the end of the book you’ll be adroit in designing web and mobile applications using DynamoDB and host it on cloud.
Table of Contents (12 chapters)
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11
Index

Catching DynamoDB errors


Until now, we discussed how to perform various operations in DynamoDB. We saw how to use AWS provided by SDK and play around with DynamoDB items and attributes. Amazon claims that AWS provides high availability and reliability, which is quite true considering the years of experience I have gained from using their services, but we still cannot deny the possibility where services such as DynamoDB might not perform as expected. So, it's important to make sure that we have a proper error catching mechanism to ensure that the disaster recovery system is in place. In this recipe, we are going to see how to catch such errors.

Getting ready

To get started with this recipe, you should have your workstation ready with the Eclipse IDE.

How to do it…

Catching errors in DynamoDB is quite easy. Whenever we perform any operations, we need to put them in the try block. Along with it, we need to put a couple of catch blocks in order to catch the errors.

Here, we will consider a simple...

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