AWS Journey

List of AWS Blogs

1. AWS Lambda and JAVA : The Basics

2. AWS Lambda,Kinesis and Java : Streams (Part one of a three part blog)

3. AWS Lambda,Kinesis and Java : The Producer (Part two of a three part blog )

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AWS Lambda with Java : Starting the journey

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 The majority of courses out there cater to a teaching Lambda (or Serverless in general)  in combination with some scripting language like python or javascript based. Although this has its own advantages,  Java developers find little solace seeing their favourite language being left out. This series is an attempt to understand the AWS lambda model in combination with java and the amazon sdk for java. I personally enjoy the java lambda combination A love-hate relationship Before divulging into the details let us have a look at what are the advantages and disadvantages of using java for Lambda functions. After all we are going against opinion, so better be prepared with the facts. Fact 1: JVM based applications have higher start up times which has an impact on event based firing of lambda functions. This has a major impact on cold start time of lambda events. There are a couple of ways around it like provisioned concurrency with its own downsides with cost or reduci...
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AWS Lambda, Kinesis and Java : The Producer
 (Part two of a three part blog.)

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This is the second post of the series in which we look at the different Kinesis Producers and their usage in a Java based SDK environment. For knowing details of Kinesis or the consumer you can visit below links A kinesis stream : Kinesis Fundamentals and the design we will be following in the post Kinesis Producer : creating a stream and publishing into the stream using both SDK API and KPL and also the kinesis agent. A kinesis consumer : A lambda function which runs whenever a message is published into the stream The code for this post can be found here . Kinesis Producer:  This is a spring boot application which is meant to run as an independent application. It could be deployed into the EC2 instance/ECS or run as a third party. For our purpose we are running this locally to publish messages into the producer. T here are 4 different mechanisms of producing messages. 2 using SDK APIs and another 2 using KPL libraries.All 4 are covered here.Let us dive into the code...
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AWS Lambda, Kinesis and Java : Streams (Part one of a three part blog.)

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  Previous post deals with AWS lambda and java. Before we go to the hands on of lambda part I would like to introduce Kinesis. The reason being Lambda is almost always used in conjunction with another services. And the other service in our case will be Kinesis. Because Kinesis is a bigger topic we will be covering this in in 3 parts. Links to subsequent blogs   A kinesis stream : Kinesis Fundamentals and the design we will be following in the post Kinesis Producer : creating a stream and publishing into the stream using both SDK API and KPL and also the kinesis agent. A kinesis consumer : A lambda function which runs whenever a message is published into the stream Kinesis streams:  A managed message streaming service provided by AWS, comparable to Apache Kafka with subtle differences. It comes in variants of provisioned and on-demend variants. Provisioned service is selected when we know and we can control the amount of data coming in per second while on-demand is ...
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