Software Development

February 3, 2021

Elasticsearch – Bucket Selector Aggregation

Bucket Selector Aggregation Elasticsearch has many aggregations to offer that allow us to group and breakdown our data in almost any way we want. Often, the results of an aggregation have to be filtered based on different criteria that are calculated using that very same aggregation and then processed further.…

Kristina Kraljevic 0

January 4, 2021

Kafka – Watch out, another broker coming up!

4 months before the incident - cluster away So, one day you decide to switch from Kafka standalone to cluster mode in order to achieve high availability. (more…)

Zinka Bilic 0

November 11, 2020

JAVA Generics

Concept of generics Java generics allows the creation of a class or a method that can be reused by different data types or objects. This reduces the need for the same implementation throughout the code. Another advantage is that the error checks are performed during the compile time, removing the…

Nizam Alesevic 0

October 6, 2020

File Download with Error Handling

Designing an API that serves files to be downloaded is not easy. In a way, it is an exception to the standard way of designing APIs. Nowadays most APIs produce XML or JSON, and that is not the case with download, which produces the format of the file being downloaded.…

Neira Pulo 0

September 9, 2020

Multi-user remote HDFS access using WebHDFS and Kerberos

As part of our data processing pipeline, we use Hadoop to execute different tasks with HDFS being the primary data storage system. Let's say we have a cluster, and multiple users do their work on the Hadoop cluster, all users will have the same privilege and everyone can access everyone’s…

Ridvan Appa Bugis 0

Love2

July 7, 2020

Deployment of a NIST data mirror on OpenShift

The need for dependency checks while building software is crucial. Dependency vulnerabilities can be quite dangerous and can lead to vulnerabilities in the final product. In addition to that, every penetration test will definitely check for dependency vulnerabilities. (more…)

Abdulah Jamak 0

June 24, 2020

5G, changing everything we know about mobile networks

It’s been nearly a decade since 5G was first introduced and slowly but surely it is taking on its true form. But even now, when carriers in some countries are just starting to roll it out, there is a lot of confusion about what 5G is and what it brings…

Haris Becic 0

June 2, 2020

Making peace with frontend development: Leveling up your CSS

The perils of CSS written in haste In the previous blog I wrote, I’ve emphasised the importance of mastering the fundamentals in order to become proficient in your work. In this blog post, I’ll start tackling one of the cornerstones of frontend web development. (more…)

Mirsad Begic 0

May 19, 2020

Remote VS Code debugging of Typescript NodeJS app deployed in Kubernetes

Today's apps are usually deployed as Docker containers on remote machines and, as such, can be a bit challenging to develop and debug. In order to speed-up the development process, one of the must have features is the ability to conduct remote debugging. (more…)

Emina Huskic 0

April 27, 2020

Deploying applications using Kubernetes

Introduction In this Tech Bite we will show you how to deploy services using Kubernetes, a popular tool for the management of containerized applications. For tutorial purposes, two services will be deployed, fe-deploy, and be-deploy (each service is part of one image). Spinning Pods using Deployment object The smallest deployable…

Dario Pejcinovic 0

April 9, 2020

Map, Filter & Reduce functions in JavaScript

Map, Filter & Reduce functions in JavaScript Map, filter and reduce functions were introduced in ES6. All of these functions transform an initial list (array) into something else, while keeping the original list intact. We can always use a for loop to get the desired result, but it can be…

Nedim Hairlahovic 0