Earlier this year I started learning few Udemy courses for AWS Solution Architect Associate Certification. My initial plan was just to get some basic knowledge about AWS services, not the certification itself. Before starting the course, I did not have any experience with native AWS services. I never used EC2 instances to launch something in production. However, I used EC2 fleet of instances to deploy Kubernetes cluster. I started my path to cloud-native tools with Docker and shifted later to Kubernetes and OpenShift. Pure AWS services were never on my radar. I think the experience of deploying Kubernetes on top of the EC2 instances is one thing, but using different AWS services like ELB, EBS, EFS, EC2 and S3 is completely another story. So I decided it is time to get to know what are those AWS main services. After coming to the end of the Udemy course, I realised it worth to go for certification to make a final point in my AWS education. As I already spent so much time.

If you need to run a Scala code as a script, i.e. using Scala source file to execute some short code, then Ammonite Scripts may be a solution for you. Ammonite project consists of a REPL, script launcher and a few Scala libraries.
Let’s write a script to generate JSON data and send it to Apache Kafka topic.

Most of the algorithmic tasks are related to iterating over arrays of data. They often can be expressed as a function which takes some input and returns some single value or an array of values. For instance:

def maxSum(a: Array[Int]): Array[Int] = ???

SBT is a Scala Build Tool. It is written in Scala and can compile, build artefacts for Scala and Java projects. SBT is also the first build tool in the Scala eco-system and the most used one among Scala developers. I am using SBT already for many years and found the following useful plugins which I use in most of my projects:

Once you start dig deeper into Scala and its suitability for functional programming, you meet Monads. In this blog post, we will explore Monads in Scala: their usage and usefulness.