Discover music with Java and go Full Stack with GraphQL (ONLINE)

Another OpenValue Düsseldorf MeetUp with two(!!) exciting talks on two magical and graphical topics!

Ever wondered what the better REST looks like? Or wondered how recognition of a song from some software listening shortly works? We are going to put our senses to work this time, both eyes and ears!

Both talks will be presented in English. RSVP now for an evening of learning and fun!

Agenda
19:00 Welcome
19:05 Going full stack with GraphQL by Rachèl
20:00 The Magic of Music Matching by Roy

First talk: "Going full stack with GraphQL" by Rachèl Heimbach (OpenValue)

Rachèl introduces his talk as follows:
"REST is a great convention on paper, but is it actually good enough for today's variety of clients like web, mobile, IoT etc? Is there a better alternative? GraphQL's query language can drastically change the way you think about data models and state-management. Besides solving REST's over-fetching and need for many HTTP calls, GraphQL can power your complete client/backend stack by introducing a single source of truth data model. This allows GraphQL based tooling like Apollo to take over your client's state-management and allows you to focus on what actually matters: building a great user experience. In this talk we'll learn how to put GraphQL (Java) in front of an existing Java REST backend and how to introduce compile time coupling between clients and server."

About Rachèl
Rachèl is a Software Engineer at OpenValue who loves to learn and share new things. He has a weak spot for Full Stack development. Currently Rachèl works with Apollo and GraphQL in a microservice architecture.

Second talk: "The Magic of Music Matching" by Roy van Rijn (OpenValue)

Arthur C. Clarke once said: “Any sufficiently advanced technology is indistinguishable from magic”
Roy describes his reason to reveal some magic as follows:
"The first time I used Shazam (the music matching app) it felt just like that: pure magic. The app shortly listens with the microphone and tells you which song is playing. As a programmer I generally have a pretty good understanding about what happens behind the scenes, in this case however I was absolutely gobsmacked.
After a weekend of studying, reading scientific papers and experimenting and coding: I had a working Shazam clone written in Java. During this talk I’ll reveal what I’ve learned and what algorithms and tricks being used."

About Roy
Roy is the director and co-founder of OpenValue Rotterdam and and is a Java Champion, JavaOne Rock Star speaker, Software Developer/Architect, experienced Agile Project Lead, international Public Speaker, blogger, all-round nerd, hacker and hobby mathematician and founder and leader of the RotterdamJUG.

If anyone had any doubts about this MeetUp being extremely interesting: those are gone by now.

Looking forward to you all joining us on November 23rd!