Insights and perspectives to keep you updated.

AWS STS:AssumeRole vs Federation

Introduction AssumeRole and Federation are two widely used approaches provided by AWS to facilitate authorization of cloud resources via Identity Management System (IDMS). In this post, we will describe the Federation and AssumeRole approaches and their integration. We will also see how they are different, and finally, conclude which one serves better. FEDERATED USERS Federated Users(external identities) are users you manage outside of AWS for Continue Reading

Coding Best practices to follow with Scala

If you are reading this blog there may be two reasons. First, you are the programmer and second, you want to be a better programmer. So here we go, Even bad code can function, But if the code isn’t clean, it can bring a development organization to its knees. Every year, countless hours and significant resources are lost because of the poorly written code. But Continue Reading

Flinkathon: Why Flink is better for Stateful Streaming applications?

Stream processing is a way to query a continuous stream of data and draw conclusions from it within the boundaries of a real-time scenario. For example, receiving an alert as soon as a fraudulent transaction is done via a credit/debit card. The 2 main types of stream processing done are: Stateless: Where every event is handled completely independent from the preceding events. Stateful: Where a Continue Reading

Serverless – Are you ready to 737 Max 8 your core business?

Ok, I agree that this is not the best way to draw and comparison and some might find it in bad spirit as well. Apologies for that. But, I am amazed at what the organizations are willing to bet on given the lure of not managing your infrastructure. After the horrendous Max 8 episode, I have become a firm believer of the fact that Technology, Continue Reading

Knoldus-Scala-Spark-Services

JPMS in Java9

Java Platform Modular System is commonly known as JPMS. The concept of JPMS i.e. Java Platform Module System came in Java 9. Its development was first started in 2005 and finally in 2017, this concept came under the project named Jigsaw. Until Java 8, we used jar files, but from Java 9 onwards, we will be using modules. Modularity is the basic rule of good Continue Reading

Running jmx2graphite as a java agent to push the JMX metrics into Graphite

In my previous blog, we discussed how to monitor a Kafka stream application using Grafana and Graphite. In this solution, we used jmx2graphite as a metrics exporter which takes the metrics from the Jolokia URL where Jolokia exposes the JMX metrics and pushes those metrics to Graphite. But, there is a problem with this solution that we need to deploy one jmx2graphite per service. So Continue Reading

Getting Started With Akka Http Cache

To build a rest point application, there are many options available like Akka Http, Finagle, Play Framework, Lagom etc. In our project, we are using Akka HTTP for building rest applications. We have lots of requests related to analytics. There are many requests which are very expensive. So, we faced an issue where our application was taking time to respond to some analytics. We have Continue Reading

Angular application with REST backend solution

We always need interaction between backend and frontend for creating a successful application, but it takes time to integrate backend with the frontend, while they both are working parallelly. So for those who need a fast development without waiting for the backend to create Rest backend with Mock data is a solution for this situation. We use JSON Server to make this possible and help Continue Reading

Knoldus-Scala-Spark-Services

Installation and switching between multiple versions of Java

Having trouble in keeping multiple versions of Java in your single system? You have approached at the right place for seeking the solution. In this blog, we will learn how to keep multiple versions of java in your system and how to switch between them as per your convenience. Before moving forward, let’s have a basic understanding of what is SDKMAN?

Tale of a Container’s File System

Namespace, CGroup, and Union file-system are the basic building blocks of a container. Let’s have our focus on file-system. Why yet another file-system for the container? Are Conventional Linux file-systems like ext2, ext3, ext4, XFS etc. not good enough to meet the purpose? In this blog post, I will try to answer these questions. Here we will be delving deeply into the Union File System Continue Reading

Digital Transformation with Amdahl’s & Gunther’s Law

Digital transformation is a herculean effort, especially if you would like to transform the entire organization. Each department, each team is a different challenge and must be addressed independently. Let us dive into how a couple of laws which are mostly used in software are hugely applicable to the modern digital transformation. Let us first start with the Amdahl’s Law on which Gunther based his Continue Reading

Combinators- A functional approach of error handling in ‘Rust’

In this world, everyone is interested in the spikes whether it is related to professional thing or personal. In this blog, I am going to give you spikes of the programming practices in Rust. Error Handling – process of handling the possibility of failure Today, every programmer is worried whether he has implemented error handling in right manner or not. There are various ways to Continue Reading

Image Comparison with AWS Rekognition using JAVA

AWS Rekognition is a service that enables you to add image and video analysis to your application. So this is the place where you’ll get to know how to embodied AWS Rekognition with your JAVA application.

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