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The talk is about a stateful application server built on top of JRuby/JVM. We at Wooga have built and evaluated such an application server, and now I want to share the learnings and obstacles that came up during development. Scaling up: We aim to fully utilize our available hardware. One box has 32 Cores and more than 32GB RAM available. How to saturate such beasts? Well, since JRuby supports real Threads we can share state (uh oh!) and saturate cores. Scaling out: What are the options for scaling a stateful application server? How to shard state across many servers safely? I aim for a talk that gives useful tips and shows code. Basically a ratio between 30% background information, 70% showcasing. The talk will cover the following topics: Safely sharing state in a concurrent environment using JRuby Using Java concurrency utils in JRuby Practical tips for tuning JRuby/JVM for maximum throughput Practical tips for evaluating performance tunings Bonus: Timetraveling

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Full of hope we started developing our biggest games so far in 2009. In 2010 we released it and gradually scaled up to 1 million users a day. But we were forced to rewrite our whole persistence layer and migrate most of our data from MySQL to Redis to make it work. In 2011 we even got 2 million daily users, but we also had to operate 200 servers which was painful - especially when the whole data center went down. So in 2012 we wanted to make everything better and started large refactoring projects - and made everything worse. But in 2013 everything will run smoothly and painless - promised! At least we hope so.

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About three years ago we set out on a mission: We wanted to bring a round-based strategy game, a genre that most gamers so far mainly enjoyed on PCs, to mobile. Today that mission is nearly completed with Warlords having been soft launched in various countries and showing very promising data. This may all sound easy enough, but the truth is that it was a hell of a ride for the team and there were times when we weren´t even sure if the project would continue. Along the way, we´ve learned many valuable things which we believe in the end made the difference and led to the numbers we now see. Wilhelm, Head of Studio and Product Lead for Warlords, will share these learnings in his talk answering the following questions: What set screws did we touch to make the session structure, pacing and content consumption work on mobile? Why different meta game systems are crucial? And finally how sticking to your game vision from start to end can make you survive such a ride.

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GDC San Francisco 2015 Presentation by Sebastian Nussbaum and Adam Telfer Today's mobile games market is tough. With thousands of new titles being available to download every week and CPIs rising high, new game concepts need to stand out. But even more importantly, they need to stay relevant for a long time. Long-term retention is the key for having a realistic shot at the top-grossing ranks of the app stores. In the first part of this talk, attendees will learn how mobile game developer Wooga evaluates new IP to ensure a long-lasting gameplay experience. The second half will show one example of how storytelling and episodic content can drive long-term retention. Sebastian will share insights and learnings from Wooga's projects in episodic content production and how to best set up your team for the ride.

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Quo Vadis Conference Berlin 2015 Mobile games have never been more competitive. Production values and marketing costs are ever increasing and the top grossing charts look strangely similar to the year before. So how can developers maximize their chances of success in such a tough market? Is it better to clone a hit or innovative wildly? Should they focus on one genre, or dabble in many? Ed draws on extensive market analysis and experience developing games to explain why selective innovation is the key to success.

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We've learned a lot through doing DevOps: Every commit is automatically integrated, tested, and deployed to a staging environment. And then it only takes one push of a button and the release goes live... Unfortunately, it's not as simple anymore when operating mobile applications: How can you quickly update your mobile software when the app store provider wants to test your software first for a few days? How can you update your configuration when your app can run offline? And how do you track down errors when the data is distributed to millions of mobile clients? Those were just some of the challenges we encountered during the operation of mobile games with millions of daily users. In this talk we will talk about the solutions we have found to address them.

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DevOps hat uns viel gelehrt: Jedes Commit wird automatisch integriert, getestet und in eine Stagingumgebung installiert. Und einen Knopfdruck später geht das Release dann live. Aber leider funktioniert das und vieles mehr, was uns in Zeiten von DevOps als Normal erscheint, nicht bei mobilen Applikationen. Wie kann ich also schnell meine mobile Software anpassen, wenn der Betreiber des App Stores erst tagelang testen will? Wie kann ich Konfiguration anpassen, wenn die App auch offline laufen soll? Und wie funktioniert Fehlersuche, wenn die Daten auf Millionen von mobilen Clients verteilt sind? Beim Betrieb von mobilen Spielen mit Millionen täglicher Nutzer standen wir genau diesen Fragen gegenüber. Der Vortrag wird darlegen, welche Antworten wir darauf gefunden haben.

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The match 3 puzzle genre is almost as old as it gets. Scour the App Store and you'll find hundreds of different varieties out there. Very few of these succeed however, and even less manage to hit the number one spot on the U.S. Apple App Store top download chart. Wooga's Jelly Splash managed to do just that, and in this session Florian Steinhoff, the creator of Jelly Splash, will give a detailed account on how his team managed that and what he learned throughout the development process.

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Three people, three talks: First, Anne explains how Wooga makes it in the hit driven mobile F2P world and frequently creates hit games. Then, Ann and Julia share their insights into the company from an intern’s perspective. Julia is currently working with a team in the prototyping phase using C#. Ann develops Objective-C for one of Wooga's live games. Both of them are students of Chalmers University of Technology, Gothenburg. Anne is in charge of University Relations at Wooga. Tags: Equality, production, programming, career.

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