Top “n” using a Priority Queue

If you ever need to capture the smallest or largest “n” from a stream of data, the approach more often…

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Generating a stream of Fibonacci numbers

A Java stream represents potentially an infinite sequence of data. This is a simple post that will go into the…

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AWS SDK 2 for Java and storing a Json in DynamoDB

AWS DynamoDB is described as a NoSQL key-value and a document database. In my work I mostly use the key-value…

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Permutation – Heap’s Algorithm

 This is a little bit of experimentation that I did recently to figure out a reasonable code to get all…

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Backpressure in Project Reactor

Project Reactor implements the Reactive Streams specification, which is a standard for asynchronously processing a stream of data while respecting…

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Expressing a conditional expression using Json – Java Implementation

I had a need recently to express a conditional expression in a form that a front end Javascript application and…

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AWS DynamoDB version field using AWS SDK for Java 2

It is useful to have a version attribute on any entity saved to anAWS DynamoDB database which is simply a…

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Processing SQS Messages using Spring Boot and Project Reactor – Part 2

This is a follow up to my blog post about processing SQS messages efficiently using Spring Boot and Project Reactor…

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Processing SQS Messages using Spring Boot and Project Reactor

I recently worked on a project where I had to efficiently process a large number of messages streaming in through…

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