At KrakenSystems we're working with various IoT devices. They are our main infrastructure for collecting data and sending them to further aggregating pipelines. For now, they are implemented as Beaglebone black devices, armv7l hard float CPU, AM335x 1GHz ARM® Cortex-A8 and only 512MB RAM. In this blogpost we're covering use case and rationale for using kubernetes on such underpowered devices.
read moreKubernetes on ARM: a case study
Neven Miculinic 30 Apr 2019best
Are popups bad for your business?
matija 14 Jan 2019A short discussion about the existence and usage of pop-ups in a modern web environment or Why are they still a thing?
read morecase study
Kubernetes on ARM: a case study
Neven Miculinic 30 Apr 2019At KrakenSystems we're working with various IoT devices. They are our main infrastructure for collecting data and sending them to further aggregating pipelines. For now, they are implemented as Beaglebone black devices, armv7l hard float CPU, AM335x 1GHz ARM® Cortex-A8 and only 512MB RAM. In this blogpost we're covering use case and rationale for using kubernetes on such underpowered devices.
read moreconversion
Are popups bad for your business?
matija 14 Jan 2019A short discussion about the existence and usage of pop-ups in a modern web environment or Why are they still a thing?
read moredatabases
Data Inconsistency and wsrep_on variable on MySQL/MariaDB Galera Cluster
markosutic 01 Aug 2019Galera Cluster is no-downtime or near-zero downtime cluster software which allows you to perform rolling upgrades or schema changes without significant effect on the application.
read moredatascience
Hidden gems and upcoming electoral opportunities – our analysis of the 2019/2020 Croatian presidential elections
kraken 02 Mar 2020As we all know, Zoran Milanović won Croatian presidential elections and became the fifth president of Croatia. But how it actually happened? How did people vote and whose votes brought victory to Mr. Milanović?
read moreSpectral analysis of irregularly sampled signal
tena 11 Dec 2019What can you do when your time-variating signal is unevenly sampled? Well, let us introduce you to The Lomb-Scargle periodogram! Because even irregulary sampled data can give you valuable results!
read moreMine my opinion? Part 4. Automatization!
tena 15 Jul 2019Now, let’s automatize sentiment analysis! In our previous article, we discussed rule-based methods and how to implement them, but here we’ll teach you how to do it simpler and quicker.
read moreMine my opinion? Part 3. How good you are with rules?
tena 06 Mar 2019In first two articles, you learned everything about types and problems of sentiment analysis algorithm, but you still don't know how to actually create one. So, in this article, we'll get our hands dirty and start with the simple one - rule-based!
read moreMine my opinion? Part 2. What’s so hard about sentiment analysis?
tena 17 Dec 2018In our last article, we explained different types of sentiments analysis, and now, we’ll focus on problems!
read moreMine my opinion? Part 1. Let’s start with basics – types
tena 06 Nov 2018In our series of articles, you’ll learn everything about sentiment analysis and how to use it! First, we’ll start with types.
read moreText classification - simple way to organize your data
tena 17 Sep 2018Let’s talk about text classification – one of the most important and typical tasks in data science. We’ll explain its benefits, where to use it and show how to make order and organize some articles.
read moreYour first dive into Deep Learning
tena 28 Jun 2018Today Deep Learning is the main trend in AI and neural networks are number one machine learning algorithms in the field of image classification and speech recognition. We decided to share our experience in this area and help you to start your own first deep learning project.
read moreText processing problems with non-English languages
tena 03 Apr 2018In our previous article, we started the discussion about text mining and talked about the most powerful text mining techniques for natural language processing. Now the time has come to talk about problems and difficulties appearing with processing any language that isn’t English.
read moreRecently word “mining” is heard in every corner. The reason is not only the bitcoin hype but also a wave of interest in machine learning tools and instruments to make customer behavior analysis. Text mining is one of such instruments. In the series of following articles, we will share with you the most powerful text mining techniques and identify some of the most used language processing tools. Also, we will clarify common issues with the text processing.
read moreToday people’s profiles in social media can give a lot of information about their personality, preferences, style of life, products they would buy or things they would like. If you know how analyse user profiles using data science you get a magic key to the real picture of your customers. Find out how someones’s writing style in social media is defined by gender, age and personality.
read moredevelopment
Doing Machine Vision on Google Coral with OpenCV
petar 27 Jan 2020I went to great lengths when installing OpenCV 4.1.1 on Google Coral Dev board. If you are in the same situation, you might have just found a solution! This post explains how to install OpenCV 4.1.1 and do machine vision on Google Coral Dev board.
read moreCustom users using Django REST framework
toni 07 Jan 2020The built-in Django User model follows the pattern consisted of username, email and password. In this tutorial you will learn to RESTfully simplify it to just email and password.
read moreBest tools for developing scalable React applications
matija 30 Aug 2019Traditionally the idea of scaling in development was mostly associated with server-side applications. However, as the web applications started to become more complex with frameworks like React, PWAs, native applications, and others, the need to write scalable code has crossed to the frontend.
read moreEnvironment configuration in React
matija 27 May 2019Before writing your first React component you should know how to setup your environment. Boilerplates, Webpack or Parcel, Babel, linter and dev tools are essential for bringing your React project to life.
read moreSwagger integration with Django REST Framework
matea 05 Dec 2017There are several possibilities for documenting API in Django REST framework. In this short tutorial you will learn how to include and set up Swagger UI with your Django projects.
read moredevops
Golang race detection
neven 21 Mar 2019
Race conditions are pretty nasty bugs. Hard to trace, reproduce and isolate; often occurring under unusual circumstances and often lead to hard to debug issues. Thus it’s best to prevent & detect them early. Thankfully, there’s a production-ready algorithm to tackle the challenge - ThreadSanitizer v2, a battle proven library for compiler support in Go, Rust, C & C++.
read morePragmatic tracing
neven 21 Nov 2018A distributed system is one in which the failure of a computer you didn't even know existed can render your own computer unusable - Leslie Lamport
read moreMigrating your self-hosted Elasticsearch to AWS Elasticsearch Service - a detailed guide
danchiel 30 Oct 2018An in-depth guide for migrating your self-hosted Elasticsearch to AWS Elasticsearch Service.
read moreCut bake and pack - Build machine images with Docker apps using Hashicorp Packer
danchiel 07 Oct 2018Heard of Hashicorp's Packer? Here we take a quick dive in building an Ubuntu image with Docker apps within.
read moreAre you a truth seeker?
danchiel 13 Aug 2018Establishing a truthful auditing is a challenge worth considering.
read moreLet me tell you a secret
jasna 13 Jul 2018They always use Alice and Bob in technical examples. We’ll use Anna and George as fictional characters in our article where we put an emphasis on the secure way of sharing data between team members.
read moreKraken was bought by Google
jasna 28 May 2018Yup, we gotta pack and head to the Google’s headquarters now…
read moreHow well does your vacuumer vacuum?
danchiel 23 Apr 2018Monitor your PostgreSQL autovacuum settings and performance on Grafana.
read moreTransforming and sending Nginx log data to Elasticsearch using Filebeat and Logstash - Part 2
danchiel 23 Feb 2018We continue log data transformation by focusing on Logstash configuration, potential basic obstacles, data enrichment and differentiating indexes
read moreTransforming and sending Nginx log data to Elasticsearch using Filebeat and Logstash - Part 1
danchiel 29 Jan 2018In this post we show how to transform your log files using Filebeat and Logstash and show a lifecycle of a log file in such ecosystem
read moreStashing and tracking logs - Introduction
danchiel 20 Nov 2017In this post we cover the need for tracking and aggregating various software logs and several software solutions that are currently available for this constantly growing niche.
read moredevops,
Summer hacking school at FOI
jasna 25 Jul 2018Kraken folks have attended and participated in FSec summer hacking school at Faculty of organization and informatics...
read moreencryption,
Let me tell you a secret
jasna 13 Jul 2018They always use Alice and Bob in technical examples. We’ll use Anna and George as fictional characters in our article where we put an emphasis on the secure way of sharing data between team members.
read moreinfosec
Summer hacking school at FOI
jasna 25 Jul 2018Kraken folks have attended and participated in FSec summer hacking school at Faculty of organization and informatics...
read morekubernetes
Kubernetes on ARM: a case study
Neven Miculinic 30 Apr 2019At KrakenSystems we're working with various IoT devices. They are our main infrastructure for collecting data and sending them to further aggregating pipelines. For now, they are implemented as Beaglebone black devices, armv7l hard float CPU, AM335x 1GHz ARM® Cortex-A8 and only 512MB RAM. In this blogpost we're covering use case and rationale for using kubernetes on such underpowered devices.
read moremarketing
Are popups bad for your business?
matija 14 Jan 2019A short discussion about the existence and usage of pop-ups in a modern web environment or Why are they still a thing?
read moreBehaviour tracking - a tool to better understand your customers. Real business examples.
magdalena 03 Jan 2018Happy New Year from Kraken! We are back from holidays and ready to start this year with a new article! The online tracking of customers behaviour has always raised a lot of questions - What actual benefit does it bring? How to measure its effectiveness? Does it violate customers privacy and is it legal at all? In our article we provide answers to these questions as well as share real business examples from our practice.
read morenews
I tried. I failed. I tried. I failed. But at no point did I allow anyone to tell me I can't do it! I tried and I - made it.
matija 04 Dec 2019Our co-founder Marin Bek shared his success story with Telegram.hr. Marin is brutally sincere – talks about his ups and downs without any sugarcoating or remorse. A lot has changed since he first entered The Game. He went from working in his small apartment and borrowing sums that most people would mock – to successfully running a 20+ people operation, working with Carrefour, Nestlé, Ferrero, and Forbes, innovating in Industry40 - creating Ascalia Ltd.
read moreA big step for Ascalia, a solid step for Industry 4.0
tena 18 Jun 2019Our start-up Ascalia won the elite Start.up! Germany Roadshow pitch organized by the Association of German Chambers of Industry and Commerce and German-Croatian Chamber of Industry and Commerce
read moreOur CEO Marin Bek about Huawei problems
tena 21 May 2019Recent big news is that Google is blocking Huawei’s access to all Android updates. However, this is not the biggest problem for Huawei now. Check an interview with our CEO, Marin Bek, where he tells what major problem is facing Huawei.
read moreKubernetes and Cloud Native Meetup#1
tena 01 Mar 2019Kraken organized the first Kubernetes and Cloud Native Meetup!
read moreSmeal College of Business visits Kraken
tena 26 Feb 2019KrakenSystems welcomed MBA students from Smeal College of Business, USA.
read moreKrakenSystems at DORS/CLUC 2018
danchiel 15 May 2018This years' Open Systems Days Croatian Linux Users’ Conference was held on 19th and 20th of April. Conference covers free and open source software, linux operating system, open standards. It is meant for students, enthusiasts, developers, freelancers, companies who wish to learn, grow their contact network, plan projects...
read moreBack to school we GO
jasna 30 Mar 2018Most recently Kraken’s CEO Marin Bek has started a little school of programming in GO language for his employees. Can your CEO program? Well, ours can and he’s willing to teach us the new stuff so we can all GO forward (pun intended) with the business and innovate stuff with new and exciting technology.
read moreKrakenSystems DevOps meetup on January 26th
danchiel 26 Jan 2018KrakenSystems was invited to Zagreb DevOps meetup on January 26th organized by Infobip. Our CTO, Dejan Strbad prepared an interesting presentation and shared his in-field experience with Kubernetes, how and why other companies are using it, what Kubernetes brings to developers and system administrators as well as basic concepts behind it.
read moreonsite
Are popups bad for your business?
matija 14 Jan 2019A short discussion about the existence and usage of pop-ups in a modern web environment or Why are they still a thing?
read morepopups,
Are popups bad for your business?
matija 14 Jan 2019A short discussion about the existence and usage of pop-ups in a modern web environment or Why are they still a thing?
read morepractice
Are popups bad for your business?
matija 14 Jan 2019A short discussion about the existence and usage of pop-ups in a modern web environment or Why are they still a thing?
read moresecurity,
Summer hacking school at FOI
jasna 25 Jul 2018Kraken folks have attended and participated in FSec summer hacking school at Faculty of organization and informatics...
read moreLet me tell you a secret
jasna 13 Jul 2018They always use Alice and Bob in technical examples. We’ll use Anna and George as fictional characters in our article where we put an emphasis on the secure way of sharing data between team members.
read moreKraken was bought by Google
jasna 28 May 2018Yup, we gotta pack and head to the Google’s headquarters now…
read moretactics,
Are popups bad for your business?
matija 14 Jan 2019A short discussion about the existence and usage of pop-ups in a modern web environment or Why are they still a thing?
read more