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AegisSoftTech Java development team is sharing this post with global developers who want to learn how to implement Kinesis technology and cloud computing to achieve modern streaming of data. You may proceed and read this article further to learn basics and specialized code for Kinesis implementation.

What is the Cloud?

The term Cloud does not refer to the clouds in the sky. In the words of Wikipedia, it means 'Cloud computing involves deploying groups of remote servers and software networks that allow centralized data storage and online access to computer services or resources'. I personally have a different version to it.

It is a term specifically used in the Tech industry which means that anything and everything can reside centrally and be shared without having to worry about the local storage or even local computing powers. Consider the case wherein a product that is developed has to be deployed for people to access it. The normal algorithm would be to buy huge servers and database space, deploy the application and pay for the usage for the services. Most of the time, the servers are being unused, the processing power wasted, the database disk not fully utilizing its true potential.

This results in the monetary loss of the company developing the products as well as a waste of technological resources. To address such situations and others, all of them quite grave, the concept of 'Cloud Computing' came into existence which aimed at sharing the resources centrally and thereby achieve a win-win situation. There are 3 ways which define the sharing of resources:

What is the Amazon Web Services?

Amazon Web Services (AWS) is another name for Cloud is whatever manner it is defined. AWS comes with a bunch of services, all of them catering to the cloud model, that allows any application to use the powerful advantages that the Cloud model suggests. Starting from sharing of the processing power, to the database, to the security system, to the sharing of computer hardware, it is one-stop-shop for any cloud requiring application. The screenshot lists all the components of AWS:

Kinesis – The road to modern streaming of data

The origin of the word 'Kinesis' is laregly attributed to the word 'Kinetic' in Physics. It means, something which is moving or is in motion. Much the same way, Kinesis is a technology offered by the AWS platform that aids when there is a requirement to continuously move data directly from one end to the other end. It offers a platform wherein data produced by one end is immediately shipped (moved) to the other end with minimal configuration.

AWS in general offers an API to work with in a variety of languages, such as .NET, PHP, Java etc. Each of them provides with the necessary SDK to perform any and every operation on any service in AWS. We are going to provide the code snippets of different Kinesis operation for Java, since we have extensively worked for Java Development with AWS. The per-requisites for operating as under would be a JAVA SDK and Maven installed on the machine.

How to use Amazon Kinesis?

To use AWS Kinesis, or as a matter of fact, any AWS Services, one must download the awssdk to use its features. Specificall for Kinesis, one must alos download an additional library that helps in the development of a Consumer (one that received the data) in a much easier fashion. In case of Maven usage, the following snippets of code are used to download the sdk. If Maven is not present, one can manually download the aws-java-sdk from the Internet.

The versions can be changed to suit the needs.

Amazon Kinesis Architecture

Before proceeding further it would be nice to understand some technical jargon associated with Kinesis:

The Consumer in Kinesis can be one of the 2 types unlike a Producer which can only exist in one form:

Kinesis API:

Following are the most important Kinesis API calls that are used very frequently and are the ones that we have been using in our projects.

One has to specify the region when creating the stream. AWS, with all of its services, is distributed in many different regions around the globe. The region is specified as follows:

The endpoint can be one of the many values as defined below:

'KinesisClient' is a variable that has been initialized as an establishment to AWS Kinesis

One has to set the partition key while adding data to the producer. It is necessary for the Producer to add the data wrapped in a ByteBuffer because that is how Kinesis accepts the data.

The appName is the tableName that is created in DynamoDB for checkpointing purposes. The intial position is a variable which tells KCL from where to start reading the data in the stream. It can have one of the two values as under:

The key component in KCL is the Record processor. One has to implement the RecordProcessor.java which extends RecordProcessorFactory class. The key methods to be implemented are:

The team is glad to share this post with global developers and let them learn about implementation of Kinesis and cloud for modern streaming of data. Don’t forget to feedback us and making queries related to java development

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