JavaSkop 2017

Corsin Decurtins

@corsin

Topic: Managers and Customers - The Missing Manual

The goal of the talk is to provide developers with information about how non-technical managers and customers tick and how to deal with them in daily project work.

Developers need to work together with non-technical people. And the better this collaboration works, the more successful the projects are. It is helpful for both parties to understand each other, know what motivates and drives the other side, what they care about.

In my career I gathered some insights that I would like to share with the audience. This experiences come from both working as a software developer and IT architect with non-technical people and from becoming a part-time manager myself.

Slides: download

Bio:

Corsin is the CTO of Netcetera and works as a developer, IT architect ... and manager. Corsin studied computer science and worked part-time as a research assistant at ETH Zurich.

Nikola Zivkov

@nikolazivkov

Topic: How I learned to stop worrying and love the monolith

With so many advocates of both the microservices-first and monolith-first approaches, it's important to understand the strengths and weaknesses of both architectural styles. With these two being at two opposite sides of the spectrum, could there be a middle ground?

We will explore the concept of structured monoliths by visiting several topics such as layered architecture (and the damages it causes), Ports and Adapters architecture as its alternative and Domain-Driven Design's Bounded Context pattern that can help us create components which can one day become microservices.

Slides: download

Bio:

Nikola Zivkov is a Java Technology Line Manager at Seavus. With more than 13 years of experience in building Java enterprise solutions, he’s passionate about building resilient architectures that withstand the test of time (and crazy client demands). He’s been a member of the Macedonian JUG since the group’s second meeting.

Dimitar Siljanovski

Topic: Do not make the Monolith great again!

Microservices are not something that you need to jump into immediately. It is a hidden trap for small teams and young companies. Luckily we survived that trap, so we can share the story with you. Business and Team organizations should follow this architecture, which motivated us to spend a huge amount of time in the last 3 years to transform our Company into Microservices-based organization.

Slides: view

Bio:

Dimitar has 12 years of Software Development experience and in last 8 years he is working as Software Architect for multiple international companies. He loves to build tech teams and to find solutions for complex Product requirements. In the last 4 years as CTO of Global Savings Group he managed to scale the company from single platform in single country to 40 platforms operating in 24 countries with more than 100M of active users monthly.

Tomche Delev

@tdelev

Topic: Test easy and prosper with Spock Framework

In the first part of the talk it will present and emphasize the importance of testing in general, and unit testing in particular as the base of the test pyramid. Then, in the second part it will introduce the audience with the Spock Framework written in Groovy (JVM dynamic langauge). Then in the third and final part of the talk, a moderate and real world examples of unit tests written in Spock will be presented (or live coded, depending on the time).

Slides: view

Bio:

Teaching assistant at FINKI, with previous industry experience in start-up with passion about sharing knowledge. Worked as developer and architect for ten years on business applications and personal projects in many different technologies and programming languages. Passionate about Java and JVM technologies, clean code, programming languages and from recently functional programming.

Katerina Doneva

Topic: Java 9 - Project Jigsaw

Jigsaw in a nutshell.

The problem with the classpath

Modularity Basic concepts

Migration of the existing code

Slides: download

Bio:

Software Engineer with over 8 years of success in developing enterprise application in Java and related technologies. Oracle Certified Professional, Java SE 8 Programmer. Persistent problem solver, excited about every aspect of the process of creating software with good quality... more bragging you can find on linkedin. Apart from being a developer I like to brag that I am a mother of two little boys (read dragons) and have lots of fun with a four year old and a baby in the house.

Milen Dyankov

@milendyankov

Topic: From zero to production in 1 conference talk time

NoSQL, Serverless, DevOps, Social Auth, ... Developers these days want to forget about infrastructure and simply build great scalable apps quickly. This just got easier and I'll prove it to you by live coding an application that you can interact with during the talk (bring your laptop and/or smartphone).

Bio:

Milen is a Developer Advocate at Liferay and focuses on Java and OSGi Platform. He is passionate about designing and building software as well as helping others design and build good software! After more than 15 years developing, designing and consulting on various Java EE solutions for leading European companies, he currently spends most of his time teaching, speaking at conferences all over the world and researching his favorite topics around Java modularity, systems architecture and software craftsmanship.

Miki Jankov

@Miki_Mixajlo

Topic: Building your own smarthome with openHAB, Raspberry Pi and Arduino

Introduction to the open-source software openHAB and the challenges to build your own smarthome based on openHAB and open-source hardware like Raspberry Pi and Arduino. Learn how to setup the system, how to connect devices to it and how to control them using smartphone app and web browser, or automate their control with rules.

Slides: download

Bio:

Java software engineer, embedded systems enthusiast and home automation hobbyist, with strong desire to improve his knowledge and skills in the software area.

Michael Drost

Topic: Agile testing: why the tester is your best friend ever!

Testers bring a particular skillset to the table. Whether it is asking the unexpected question or finding the one issue everybody else missed. But they can do a lot more and I am not talking about coding. You actually hold the key to unlocking a huge amount of potential achievements. Did you know that if you let them start doing their thing before you start doing yours, you will be in a far better position to deliver the product the product owner needs?

My talk will focus on how practical Business Driven Testing can save you time and allow you to deliver the best product possible without distractions. Come and get the keys to unlock the true tester!

Slides: download

Bio:

Michael Drost: husband to a fantastic wife, father to four incredible children, TOGAF certified, excellence obsessed and motorsport mad. Started testing in 2000 and never looked back. Any time not spent on the job or the family, goes into being a motorsport data engineer at club level, because every race is a sprint, every driver a product owner and every car has the potential to be the perfect product. Unlocking that potential in an octane driven, high pressure environment and being rewarded with the top step of the podium, is the way I love to spend my weekends!

Jana Karcheska

Topic: How Reactive do we need to be

My greatest passion in programming are functional languages, the languages that were believed to be the future of AI. Now they are prevailing in all other areas and concepts like Reactive, Immutable, Stateless are becoming part of our daily work. Which is great, but the question is how Reactive do we really need to be. I want to give my "point de vue" based on my experience with using Javascript frontend technologies for big enterprise projects.

While it is easy to be courageous and innovative when doing small start up projects in reality most of us still have to do big projects that need to stay stable and useful for many years. It is amazing that now enterprise projects are opening up to novelty but how can we really survive the turmoil and take advantage of the good and avoid the volatile and bad.

I want to try to go about this topic in a pragmatic way drawing from my experience and cured by my passion for functional programming and showcase and compare some of the advantages and setbacks in the most popular Javascript frameworks.

Slides: download

Bio:

Jana is a senior software engineer working at Netcetera. She has more than 10 years of experience working mainly with Java technologies. Her expertise includes working on complex safety critical and mission critical systems. Outside of the daily work, her other interests are machine learning, bioinformatics and functional programming, languages like Lisp, Clojure and few other languages on the JVM.

Marjan Kindalov

Topic: How to register and login into a system

Registration

• 2 step Registration
• why is done
• how is done

Login

• storing plain Password in DB
• storing hash of the password in the DB
• dictionary attack, rainbow-tables
• salting the passwords with static hash
• salting the password with dynamic hash
• key stretching
• Error messages
• User enumeration
• Password enumeration
• TLS

Slides: download

Bio:

Marjan Kindalov is a Senior Software Engineer at Netcetera. He has been working mostly on eComerce and Payment solutions. Author of not so famous "Struckture" project.

Gorjan Zajkovski

@the_wittyone

Topic: Recommender Systems: What, Why, How

This talk will give a short overview of what a Recommender System is, and the decisions one has to take into account when designing one. Then we will go into more details on the general concept of a recommendation engine, why do we need one, the used algorithm (collaborative filtering, factorization techniques), its' nature (personalized / non-personalized), the valuation metrics, and the learning procedure. A couple of key points will also be addressed, such as the importance of implicit user feedback, the integration of the engine into the service, and the unavoidable pitfalls.

WHAT

WHY

HOW

Closing:

Slides: download

Bio:

Gorjan is a software engineer at Netcetera, working on various projects including research into the area of machine learning. For his graduate thesis, he built a proof of concept event recommendation system. Nowadays, he spends his work time developing daily in Java, JavaScript and Python, and the rest at Coursera, learning the latest trends in the world of Big Data and Data Science.

Pavel Bely

@BielyPaviel

Topic: How to deploy Dockerized applications to AWS ElasticBeanstalk

Perhaps the easiest way to run your application at AWS as a multi Docker container app is to use Amazon ElasticBeanstalk. It allows you to quickly deploy and manage applications in the AWS Cloud and let Amazon care about the infrastructure magic. In short all you need to do is to create an application in Elastic Beanstalk, configure its environment and provide an archive with Dockerrun.aws.json file. This is where you define which docker images should be used and how they need to be configured when deploying your app. Continuous integration? Yes, this can be automated, Jenkins is there to help with lots of AWS plugins (so you don’t need to know any Groovy). In my presentation I'll share my experience of using ElasticBeanstalk and automating deployment with Jenkins.

Here is my blog post that is the core of my presentation

Slides: download

Bio:

I am a software engineer and punk musician from Minsk, Belarus. In 2010 I have graduated from BSUIR (Belarusian State University of Informatics and Radio electronics) and since then have worked as a developer - starting as a vintage mainframe engineer (PL/I, Assembler) to fancy single page applications developer (JavaScript and Java). Currently I work in Seavus as a full stack developer.

Sashko Peshevski

@saspes

Topic: Spring Boot SSO in 15 min

Spring Boot SSO implemented with Oauth2 and Zuul proxy, with .jdbc() instead of .inMemory(), focuses on client developer simplicity while providing specific authorization flows for web and desktop apps, mobile and IoT devices. Implementation .inMemory() will be faster, but if multiple clients are consuming this then it is better to have it in .jdbc(). Will use an OAuth2 server as the authenticator, so that we can also use it to grant tokens for the backend resource server using MySQL as client, user and token store. The goal is to work around CORS and the Same Origin Policy restriction of the browser and allow the UI to call the API even though they don't share the same origin using Zuul proxy.

Slides: download

Bio:

Senior software developer and consultant at Polar Cape with 10 years experience in Java. More than 2 year ago (beside Java) started to work as a hybrid mobile app developer, Android and iOS, including JavaScript, AngularJS, Cordova, HTML5, Objective-C, etc. Also, in free time, he has blogging view on the most recent happenings in IT, gadgets and IoT (especially Raspberry Pi).

Goran Kopevski

@kopevski

Topic: AWS lambda using Serverless

Serverless architecture is one of the trending architecture for cloud based scalable microservices. It is getting more and more popular in the last two years. Currently, there are multiple providers that are offering the serverless architecture in their cloud stack. The goal of this presentation is to show how easy it is to start working with AWS Lambda and the full potential that it offers. Also, to show the drawback you need to think about before you start using it in production applications. The presentation will cover an intro, a live coding demo and an explanation of the positive and negative things of the Serverless architecture.

Slides: download

Bio:

Goran Kopevski is a 6 year experienced Javascript developer. Currently, he is working for Cuponation as a senior developer on a system that serves more than million users daily. He has worked for multiple clients including Porsche Informatik, Cardiologie Centra Nederland and various telecom companies. He is a versatile developer who has tasted the flavor of many technologies. Aims for simplified code and usage of javascript. Open minded for new technologies and thinking out of the box. As an open minded person, he wants to exploit all of the magic that Javascript can offer.

Blagoj Atanasovski

Topic: Javaslang - Achieve functional eloquence with Java8

Javaslang is a functional library for Java8+. It helps to reduce the amount of code and to increase the robustness. Javaslang fuses the power of object-oriented programming with the elegance and robustness of functional programming.

Slides: download

Bio:

Blagoj is a Software Engineer at Sorsix, where he works on data-intensive applications. His interests include distributed systems, database systems architecture and concurrency.

Ivan St. Ivanov

@ivan_stefanov

Topic: MicroProfile quick start

The presentation will start with an overview of the history of innovation in the Java EE space. Then it will outline the problems with the previous approaches that lead to the inception of the MicroProfile initiative.

The second part of the presentation will be a description of what MicroProfile is - which are the vendors behind it, what are its goals and what is the innovation process. Then it will briefly review what is in version 1.0 and what is coming in version 1.1.

Finally the speaker will show a working MicroProfile 1.0 application, where each service is running on a different vendor vendor platform.

Slides: download

Bio:

Ivan St. Ivanov has more than 15 years experience with Java development. He is founder and senior programmer at VIDA Software. Ivan is one of the Bulgarian JUG leads, driving the Adopt a JSR initiative in Bulgaria. As of 2015 he is one of the key organizers of the jPrime conference in Sofia. In his free time he likes contributing to open source software, mostly to MicroProfile and JBoss Forge. Ivan is doing his PhD in the University of National and World Economy in Sofia in the area of throttling shared resources in multi-tenant cloud environment. He is teaching Java and Java EE in the Sofia University.

Petar Blazevski

@PetarBlazevski

Topic: Quick introduction of state management in JavaScript apps using Redux

Since the introduction of the modularization in the JavaScript world, we have faced countless of issues. One very common problem, especially in the component driven development, is how can we share data between modules/components. Facebook had the same issue when they moved their UI to React. In order to solve this problem, they started implementing the Flux application architecture. Redux, on the other hand, has evolved around the idea of Flux, and is becoming the go-to tool in a React application. It was created as a state management library with minimal API, but with the ability to be implemented in various features like hot reloading, universal apps, etc.

Slides: download

Bio:

Petar is a front-end developer at Polar Cape with 5 years of experience. He started working as a back-end developer using the PHP scripting language, and moved to full time front-end when JavaScript started taking over the web.

Branislav Bajlovski

@bbjski

Topic: Network Application with Apache MINA

Playing with media streams, codecs, reliable data transfer, custom protocols, UDP/TCP & IP. How to make applications that are focusing only on one functionality instead all functionalities. E.g. Proxy. If you need only 2 functionalities, why running whole proxy? Why not making your own proxy in 5 minutes? How about performance? How about lightweight network applications?"

Slides: download

Bio:

17 years experience as Java Ddeveloper. Certified ScrumMaster & Certified Scrum Product Owner. Founder and former Partner in Ever Near Macedonia. VP for Operations and Technology in Sourcico. More than 2.500 days in Java projects.