Prelegenci

Testing Your Message-Driven Application

So you end up with messaging and event-driven architecture. You also have heard about event sourcing and applied this principle in a few places in your code. Everything seems to be working perfectly, you are about to perform the first release and you’ve decided to change the structure of one event. The event you have changed was both used for state reconstruction (event sourcing) and integration (event-driven architecture). Due to that change, out of a sudden, your acceptance environment stopped working… “How come?! I have only changed an implementation detail in my cool event-sourced domain!” said the senior developer. In this talk, we will chat about how to work with events that are used as integration messages in your system. We will tackle content-negotiation, versioning and acceptance tests. There will be a lot of Spring Cloud stack and we will see how we can benefit from Consumer Driven Contracts when NOT using REST APIs.

Consumer Driven Contracts like TDD to the API

Consumer driven contracts (CDC) are like TDD applied to the API. It's especially important in the world of microservices. Since it's driven by consumers, it's much more user friendly. Of course microservices are really cool, but most people do not take into consideration plenty of potential obstacles that should be tackled. Then instead of frequent, fully automated deploys via a delivery pipeline, you might end up in an asylum due to frequent mental breakdowns caused by production disasters. We will write a system using the CDC approach together with Spring Boot and Spring Cloud Contract. We'll show you how easy it is to write applications that have a consumer driven API and that will allow a developer to speed up the time of writing his better quality software. The presentation will consist of some theory but there'll also be live coding and demos.

Sztuczna Inteligencja i Serverless – czyli jak budować nowoczesne aplikacje w świecie chmury 2.0

Podczas tej sesji przekonamy się czy niecała godzina wystarczy, aby utworzyć od zera niebanalną chmurową aplikację. Aplikację, która będzie w pełni skalowalna, będzie wysokiej dostępności, będzie składała się z niezależnych mikrousług, nierelacyjnej bazy danych, będzie wykorzystywała takie elementy Sztucznej Inteligencji jak konwersja tekstu na mowę, analiza obrazów i z którą na końcu będziemy w stanie porozumieć się za pomocą głosu. A wszystko to z pomocą usług Serverless!

Testing Your Message-Driven Application

So you end up with messaging and event-driven architecture. You also have heard about event sourcing and applied this principle in a few places in your code. Everything seems to be working perfectly, you are about to perform the first release and you’ve decided to change the structure of one event. The event you have changed was both used for state reconstruction (event sourcing) and integration (event-driven architecture). Due to that change, out of a sudden, your acceptance environment stopped working… “How come?! I have only changed an implementation detail in my cool event-sourced domain!” said the senior developer. In this talk, we will chat about how to work with events that are used as integration messages in your system. We will tackle content-negotiation, versioning and acceptance tests. There will be a lot of Spring Cloud stack and we will see how we can benefit from Consumer Driven Contracts when NOT using REST APIs.

Big Data i Machine Learning w świecie Google

Podczas sesji pokażę w jaki sposób Google Cloud Platform upraszcza przetwarzanie dużych zbiorów danych.Opowiem jak Google łączy technologie open-source z własnymi rozwiązaniami, tworząc prostą w użyciu i przyjazną developerom platformę analityczną. Następnie zapoznamy się z kluczowymi usługami w tym zakresie, w tym BigQuery, Dataproc i Cloud Composer. Na koniec przyjrzymy się produktom Google w zakresie uczenia maszynowego.

new java.io.File("geecon.json"); is this really that simple?

You may ask yourself, what can be interesting in opening file? In Java? Welcome to the land of false assumptions, deadly dangerous illusions, superstitions and mis-believes, where ignorance is bliss. Modern OSs offer many ways to work with files, the only universal and ultimate abstraction, because everything is a file. During this talk I am going to walk us through how Java maps this behavior, how it treats file handles and which IO access patterns work is certain cases and why it sometimes explodes in the middle of the night. I can promise there will be a lot about syscalls, some performance numbers and little bit of JNI. If you think it is boring you can always go to another talk about hundred of ways how to inject object into object. If you have never heard about vectored IO, memory mapped files, direct IO or zero copy IO I am sure you will have loads of fun watching me trying compile all of examples.

'Dla każdego coś miłego' - przegląd typów środowisk uruchomieniowych w chmurze.

Podczas panelu opowiemy jak optymalnie wybrać sposób implementacji aplikacji w chmurze (maszyna wirtualna czy kontener, runtime czy może serverless), oraz pokażemy przykładowe wykorzystanie platformy chmurowej do szybkiego prototypowania aplikacji IoT.

Jak w pół roku zbudować całe IT firmy logistycznej w Kuwejcie.

Praktyczne porady i zero marketingowej ściemy. Podczas prezentacji dowiesz się jak zbudowałem całe rozwiązanie IT dla firmy logistycznej Mashkor w Kuwejcie. Od zera do działających produktów,CRM i backoffice. Możliwie szczegółowo zostanie pokazana architektura rozwiązania, zastosowane systemy, wzorce i metodyka pracy.

Passwordless Azure infrastructure

Azure daje nam potężny zbiór narzędzi pomagający w utrzymaniu naszej infrastruktury bezpiecznej. Jednym z zagadnień bezpieczeństwa jest zarządzanie hasłami. Podczas mojej sesji postaram się pokazać, w jaki sposób możemy używać najpopularniejszych usług Microsoft Azure dbając o bezpieczeństwo naszych haseł.

Blockchain: more than bitcoin

There is more to blockchain than Bitcoin, Ethereum and all the mining! Let's see how do these technologies can affect us, developers. This session starts with facts, establishing what blockchain, smart contracts and other concepts are. Armed with theory, we will showcase a 'smart contract' application, built in Java, with open source, then discuss applications, problems and consider implications of a contract being put 'out there' (and what is 'there') You will walk out understanding what a 'distributed ledger' is, knowing what to get from Github. And maybe an idea of an application, who knows? Let's now build those revolutions everybody is speaking about!

Programowanie reaktywne: czego się nauczyłem

Programowanie reaktywne umożliwia wiele niesamowitych rzeczy. Skalowalne systemy potrzebujące zaledwie ułamka mocy obliczeniowej i zasobów w porównaniu z klasyczną, blokującą aplikacją? Pewnie. Responsywny kod, ogromna przepustowość, niskie czasy odpowiedzi? Bez problemu. Niewielki narzut na pamięć i system? Z definicji. Dlaczego by nie kochać programowania reaktywnego i reaktywnych systemów? Podzielę się z Wami moimi doświadczeniami, kiedy reaktywność popłaca, ale zwłaszcza kiedy jest podejście przeinżynierowanym. Jakie są ukryte koszty i typowe błędy? Jak przekonać swój zespół do rozpoczęcia przygody z reaktywnością? I jeszcze ważniejsze, jak dostrzec, że ten styl architektoniczny to ślepa uliczka, więcej kłopotu niż pożytku? Na konkretnych przykładach.

Consumer Driven Contracts like TDD to the API

Consumer driven contracts (CDC) are like TDD applied to the API. It's especially important in the world of microservices. Since it's driven by consumers, it's much more user friendly. Of course microservices are really cool, but most people do not take into consideration plenty of potential obstacles that should be tackled. Then instead of frequent, fully automated deploys via a delivery pipeline, you might end up in an asylum due to frequent mental breakdowns caused by production disasters. We will write a system using the CDC approach together with Spring Boot and Spring Cloud Contract. We'll show you how easy it is to write applications that have a consumer driven API and that will allow a developer to speed up the time of writing his better quality software. The presentation will consist of some theory but there'll also be live coding and demos.

Cloud Native in Enterprise - great opportunity and even greater responsibility

Containers have been used by programmers for years even without Ops being aware of it. What runs great on developers' laptop does not necessarily operate securely in production. How do you make sure that you fit your containers into your security policies? Kubernetes, that became a de facto standard for containers orchestration, allows extension of network interfaces in almost any cloud. We will have a look at a combination of Pivotal Container Services and NSX-T to allow enterprises to introduce containers into their Hybrid Cloud.

Cloud Native in Enterprise - great opportunity and even greater responsibility

Containers have been used by programmers for years even without Ops being aware of it. What runs great on developers' laptop does not necessarily operate securely in production. How do you make sure that you fit your containers into your security policies? Kubernetes, that became a de facto standard for containers orchestration, allows extension of network interfaces in almost any cloud. We will have a look at a combination of Pivotal Container Services and NSX-T to allow enterprises to introduce containers into their Hybrid Cloud.

Oracle Cloud Infrastructure, a beast for the Enterprise

Oracle's next generation Cloud Infrastructure is the Foundation. Let's dig into the technical decisions that allowed Oracle make some really differentiated decisions in how we designed infrastructure; how we designed the network; and how we designed the software platform. We've come up with a wide range of services to make transition to the Cloud easier. Run Baremetal, VMs, Containers, ExaData in a high-performance network while deploying services with the same set of APIs. Stay with us and enjoy the journey to the Cloud.

A testable architecture

An application can only be tested successfully using test automation and executable specifications if the architecture is testable. The tests must be fast, reliable, and offer good diagnosis precision. They must also be easy to write, maintain, and execute. Tests without these properties will be abandoned after a while and the effort creating them will be lost. You will learn about a proven architecture style that offers testability and fast feedback in this session. We will examine an example using well known tools to achieve the goal of working software in production.