Posts Tagged ‘Project Reactor’

2b || !2b with reactive Spring at JUG UA (March, ?)

February 15th, 2018 No comments

We are happy to announce our next JUG UA meetup!

Date: March 28, 19:00 – 22:00 (registration from 18:30)
Venue: Grammarly Kyiv, Gulliver Business Center, Tower B, floor 14, 1a Sportyvna Square, Kyiv




  • Do you really need reactive Spring? (Oleh Dokuka @ Levi 9, Igor Lozynskyi @Ciklum/Zoomdata)

Reactivity – is a buzzword. Nowaday’s market talks about reactivity. Vert.x, Akka, what else? Right – recently Spring Framework introduced new module called WebFlux, which allows building Reactive Application using traditional Spring features. But do we really need that module, will it help us in our every-day job, will it in solving our problems? What else is hidden behind that? All that stuff will be discussed during the talk and finally, we will get an understanding whether starting/migrating your current project with/to Reactive Spring worth it.

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Workshop: Hands-on Reactive Programming in Java

January 5th, 2018 No comments

Workshop will be useful for Reactive programming adopters, who have no previous experience. During workshop you will learned the most popular libraries for reactive programming in Java (RxJava, Reactive Streams, Project Reactor) and have a practical exercises.

Date: February, 3rd
Time: 10:00 – 17:00
Venue: Wix Kyiv office,  Pankivska St, 14А, Kyiv

Registration (Sold Out)

Date: February, 10th
Time: 09:00 – 17:00
Venue: Epam Lviv office,  Oleny Stepanivny St, 45, Lviv


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JUG UA and Java Tech Talks @ Lohika meetup

October 20th, 2017 1 comment

We are happy to announce our next JUG UA and Java Tech Talks @ Lohika meetup!

Date: October 23, 19:00 – 22:00 (registration from 18:30)
Venue: Lohika office, Zhylyanska 35, 7th floor, Kyiv



  • Casandra: to be or not to be (Andriy Rymar, Software Engineer at Lohika, Lviv)
  • Refactor to Reactive with Spring 5 and Project Reactor (Oleh Dokuka, Software Engineer at Levi9)

JUnit 5 / Project Reactor (April 13)

April 1st, 2017 1 comment

We are happy to announce our next JUG UA meeting. Our partner EPAM provides everyone with a possibility to join this event online.

Date: April 13, 19:00 – 22:30 (registration from 18:30)
Venue: “Olympic Hall – Vokzalnaya”, Vasylia Lypkivskoho St, 3, Kyiv


  • JUnit 5: The Rise of Jupiter (Yaroslav Yermilov, @EPAM) (slides, src, video)
The planet Jupiter (5th! in the Solar System) needs 11 years to make one complete orbit around the Sun. So do JUnit needs 11 years to get a new major release, which means it’s going to be really huge.
Milestone 3 is already available and GA is scheduled on Q3 2017, so now it’s the best time learn and discuss how automating testing is going to look like very soon.
In this talk we will go through JUnit 5 changes and see how they will influence test code we write. Also we will discuss JUnit 5 architectural approach, how it can be extended and how it turns JUnit from test framework into test platform.


During the meetup, we are going to overview Project Reactor in depth and trying to understand how to use correctly given functionality and rebuild imperative web application to reactive one.
1. Project Reactor overview.
2. Imperative Application analyzing (2 pages web application with the Gitter integration and plain DB for event logging)
3. Test Refactoring
4. Application refactoring