Summary Apache Camel Conference & Workshop

Hi devs !!

On Friday January 24th, we had the pleasure to host an awesome conference and workshop about Apache Camel, leaded by one of the main committers for this Apache project and also the author of the book "Camel in Action"..... Mr Claus Ibsen.

After pointing about the origin of its name, Mr. Ibsen clarified the main concepts that defines Apache Camel: integration framework + enterprise integration patterns. This was the entry point to the book "Enterprise Integration Patterns. Designing, building,and deploying messaging solutions" written by Gregor Hohpe and Bobby Woolf. Mr. Ibsen reviewed some of the patterns evaluated and described in this book to show where Apache Camel may apply, and as examples for the cases he explained as the conference went on.

Camel works using "routes"  joining endpoints, using transformes, choices, etc. Tons of components make Camel a tool to connect everywhere out-of-the-box.

It can use Java DSL using the Java language to define the routes, or Spring DSL defining routes in the XML, among others, and it can be embedded as a library in our application.

The Saturday morning in the workshop we used our prefered IDE to create a project with a route using a REST webservice as an endpoint, and we saw how easy was to create our application, developing only the core, the business logic and not the adapters and the protocols.

By the way, room was full in the two sessions ... it was awesome to see all that people listening to Claus.

Here we can see the video of the presentation : 

Claus Ibsen slides are available at Slideshare site. 

Do not hesitate to take a look at Claus Ibsen personal blog at http://www.davsclaus.com/2014/01/back-from-barcelona.html


Thanks for coming !!!!

AWS workshop / Battlefield with CAPSiDE (15/02)

Hi devops!

¿Alguien interesado en un taller relacionado con el cloud y más concretamente en AWS? ;-) Si la respuesta es afirmativa, entonces sigue leyendo, porque estás invitado a nuestro próximo workshop, el próximo sábado 15 que será llevado a cabo gracias a CAPSiDE (Authorized Training Partner de Amazon) en sus oficinas.

El objetivo de este workshop es ponernos nosotros mismos al volante de "nuestra nube", entender los conceptos y el funcionamiento de AWS y, por supuesto, ¡jugar con ella! Ah! Sobretodo, no os olvidéis vuestra tarjeta bancaria, porque aunque el evento será gratuito gracias a CAPSiDE, esta vez, cada uno tendrá que asumir el coste de sus propias máquinas virtuales, dependiendo del uso que le dé y hasta dónde quiera llegar (que por lo que hemos calculado será de un total entre 1-5€, ...coste que creemos que podréis asumir ;-))

En cuanto a la sesión, comenzaremos a nivel de configuración para definir conceptos básicos de AWS para continuar con temas como la escalabilidad y elasticidad. Continuaremos con la definición de métricas y políticas de escalado. Por último y con nuestra propia nube, realizaremos pruebas de carga y... ¡acabaremos luchando entre nuestras flotas viendo qué sucede en términos de coste y su uso! Aquí tenéis un guión más detallado de lo que hemos preparado: 

1. Presentación de AWS
2. Servicios EC2
   Conceptos básicos de virtualización, tipos de instancia, ciclo de vida, easy came easy goes
3. Amazon Machine
   Creación de AMIs personalizadas, personalización vs flexibilidad, etc
   
4. Escalabilidad vertical
   Diferencias de rendimiento, ventajas, outages, precio
5. Escalabilidad horizontal
   Caso de éxito: Animoto
   ¡Café!
6. Launch configuration
   Crearemos una plantilla para lanzar instancias
7. Autoscaling groups
   Definiremos cuántas máquinas compondrán nuestra flota 
8. Elastic Load Balancers
   Explicaremos cómo poder acceder a todas sus máquinas desde una única dirección
   ¡Más café! 
9. Cloudwatch y métricas
   El papel de las métricas y qué se puede y no se puede hacer
10. Autoescaling policies
    Discutiremos qué métricas son útiles en este escenario y qué umbrales escoger
11. Pruebas de carga
    Veremos cómo evoluciona nuestra flota cuando la ponemos a prueba y cómo utilizar AWS para testear cargas
12. ¡Fight!
    Veremos una configuración contra otra y que coste económico tiene cada elección.
    Debate final. 

El taller, será impartido por Javi Moreno, Resident Futurist & Evangelist en CAPSiDE. Javi (@ciberado) es ingeniero informático con más de 20 años de experiencia como profesor en gran variedad de tecnologías y áreas y actualmente da cursos de AWS, Cloud Computing, Java, Big Data, Hadoop, MapR, MongoDB, aunque, como él dice, lo que le gusta ... es hacer fotos ;-)

Para ir acabando, dar las gracias una vez más a CAPSiDE, ya que han puesto todo por su parte para realizar este taller y se han mostrado en todo momento animadísimos a llevarlo a cabo, así que esperamos que sea satisfactorio para todos.

Nada más, vigila, porque las plazas son más que limitadas así que,... ¡date prisa y reserva tu plaza en MeetUp! Y si finalmente no puedes venir, por favor, libérala.

Un saludo & happy cloud computing!

Introduction to Vaadin (6/2)

Talk in English

Hello community !

February is here so, here we are ! Our next event, next thursday 6th of february will focus on a great open source application framework: Vaadin.

For all of you who don't know anything about Vaadin, we can tell you that is an great framework built on top of open source technologies designed to build rich Internet applications. It uses a server-side architecture to build & deliver Javascript to the browser, so it means that all of your application logic runs on your servers. Of course, it uses Ajax requests to provide a rich and interactive user experience. Writing an application that lazily loads large amounts of data from the server, includes drag-and-drop, keyboard navigation and compelling visualizations would not require writing any HTML, JavaScript or resigning a REST API. While the server centric development model provides the best productivity, Vaadin also supports client-side development though the GWT based Java to JavaScript compiler as well as JavaScript. The default looks of the application can be customized with CSS and SASS.

This presentation will give you an overview to Vaadin and explain how it works. We'll also discuss on what are the latest new features of Vaadin and how the roadmap looks. The session should give you everything you need to get started building your own apps with the free Apache-licensed Vaadin. Furthermore, we explore the ways of combining the server- and client-side development models in the context of Vaadin Framework and GWT. The goal is to be able to use the best of the both models and provide a flexible basis for building high quality user interfaces for enterprise applications. 

We invite you to take a look at their website, it's really interesting the amount of features it has. Check out the sampler app they have in their website and you will see how beautiful and rich UI you can build as well as how easy is the code to understand and write. 

Dr. Joonas Lehtinen, founder and CEO of Vaadin ltd, the company behind the Vaddin framework, will come from Finland to explain which are the benefits of work with this web framework and why we must try it in comparison with others. Joonas has been developing applications for the web since 1995 with a strong focus on Ajax and Java and he is a frequent speaker at international conferences.

Nothing more to say guys, come to see what's inside this web framework and don't forget to RSVPed!

See you next thursday!

Getting started with Apache Camel (24-25 / 01)

Talk in English

Hi devs !!!

This new year 2014 we start with amazing meetings !!!

Now it's turn of an introduction and a workshop of Apache Camel by the hand of one of the main committers for this Apache project and also the author of the book "Camel in Action"..... Mr Claus Ibsen.

Claus Ibsen has worked on Apache Camel for years and he shares a great deal of his expertise as a co-author of Manning's Camel in Action book.

He is a Principal Software Engineer working for Red Hat specializing in the enterprise integration space. Claus is the most active contributor to Apache Camel and is very active in the Camel community. He hang out on the Camel mailing lists, irc-room and often blogs about Camel. 

Prior to joining Red Hat, Claus has worked with integration in all sorts for the last decade.

"Apache Camel  is a versatile open-source integration framework based on known Enterprise Integration Patterns. Camel empowers you to define routing and mediation rules in a variety of domain-specific languages, including a Java-based Fluent API, Spring or Blueprint XML Configuration files, and a Scala DSL. This means you get smart completion of routing rules in your IDE, whether in a Java, Scala or XML editor."

Session 1 : Presentation ( Friday 24 ) :

This session will teach you how to get a good start with Apache Camel. We will introduce you to Apache Camel and how Camel its related to Enterprise Integration Patterns. And how you go about using these patterns in Camel routes, written in Java code or XML files.

We will then discuss how you can get started developing with Camel, and how to setup new projects from scratch using Maven and Eclipse tooling.

This session includes live demos that show how to build Camel applications in Java, Spring, OSGi Blueprint and alternative languages such as Scala and Groovy. You will also hear what other features Camel provides out of the box, which can make integration much easier for you.

We also take a moment to look at web console tooling that allows you to get insight into your running Apache Camel applications, which has among others visual route diagrams with tracing/debugging and profiling capabilities.

Before opening up for QA, we will share useful links where you can dive into learning more about Camel.

Reserve your Ticket !!!!

Session 2 : Workshop ( Saturday 25 ) :

We would start with playing with a few of the out of the box Apache Camel examples, and get them into your IDE of choice, and then be able to edit the source code a bit, and see the changes in action etc.

Then move on to create a new project from scratch, and it can be something with REST or the likes, to build a mini app.

If there is people in the audience who have tried OSGi we would try out OSGi on Karaf / ServiceMix / Fuse etc.

Requirements :

• JDK 7
• Maven 3.0.4 ( we have had some problems building with 3.1.0 )
• IDE such as Eclipse JUNO or JIDEA.
• Tomcat  7.0.50 or upper
• Apache Camel - the latest 2.12.2 release - just the binary release.

Reserve your Ticket !!!!

Hope to see you there and don't forget to RSVPed in our MeetUps for the talk on friday 24th and/or saturday 25th (there are only 30 seats availables, hurry up)!!!!

Resumen workshop jBPM & Drools (10/12)

Hola devs!

Cerramos el año 2013 con un workshop de jBPM y Drools el 10 de diciembre de la mano de los compañeros de RedHat: Mauricio Salatino, Pere Fernandez y Walter Medvedeo.

Empezamos con una primera parte de presentación rápida con los conceptos básicos para poner en contexto a todos los asistentes: que son los motores de procesos de negocio y los motores de reglas, para que se usan y cuales son sus ventajas, y una introducción a jBPM y Drools.

A continuación nos presentaron la integración de jBPM y Drools en la nueva plataforma KIE ( Knowledge is Everything), sus principales características, ventajas y las muchísimas herramientas de soporte que hay en la plataforma KIE. Nos presentaron rápidamente las diferentes herramientas y como funciona la plataforma KIE. No pudimos profundizar demasiado para poder pasar a la parte práctica, pero en las slides os dejamos todo el detalle, y cualquier comentario o pregunta, como siempre será bienvenido ;)

En la parte práctica, todos los asistentes pudieron levantar la plataforma KIE en su laptop, con los ficheros que se habían distribuido previamente para el workshop y que podéis encontrar al final del post. Hicimos un tour rápido guiado por la plataforma: vimos un proyecto que teníamos creado (estructura, procesos, human tasks y forms), compilamos y deployamos el proyecto en la plataforma, iniciamos el proceso, ejecutamos las tareas, y vimos las herramientas de monitorización. Un tour muy completo, todo y que rápido por falta de tiempo, pero que sirvió de inicialización.

A continuación os dejamos las slides de la presentación y los ficheros necesarios para el workshop. En la parte final de la presentación podéis encontrar el guión del workshop por si alguno/a se perdió el workshop y quiere probarlo, vale la pena :)

Workshop Files to Download

Slides from the Workshop

Al final del workshop hubo una tanda de interesantes preguntas e intercambio de experiencias, y surgió el interés de una charla o workshop más centrada en el motor de reglas de Drools. Los ponentes les gustó la idea y están abiertos a buscar fechas y hablarlo ¿Que opináis? Necesitamos vuestro feedback ;) Si vemos que hay interés en la comunidad por temas de Drools o jBPM, miraremos de hacer más charlas y talleres.

Let’s go community!

Introducción a Hadoop (9/1)

¡Hola!

¿Os habéis portado bien? ¿Los Reyes Magos os han dejado algún gadget? Esperamos que sí, pero si no es así, no os preocupéis que aquí os hacemos un pequeño regalo: os invitamos a nuestro próximo evento este próximo jueves día 9 a partir de las 19h, en La Fontana. En esta ocasión, nos centraremos en ese gran /*¿des?*/conocido que es Hadoop, este marco de trabajo diseñado para el procesado distribuido de grandes conjuntos de datos usando modelados simples de programación.

La charla, que será conducida por Ferran Galí, consistirá en una introducción al framework de computación distribuida Hadoop. Descubriremos qué necesidades influyeron en la aparición de ese nuevo paradigma y aprenderemos la base de los dos pilares que conforman la tecnología: HDFS para el almacenamiento, y MapReduce para el procesado. Seguiremos con unas pinceladas en algunos de los proyectos más importantes del ecosistema Hadoop, y terminaremos mirando la tecnología desde una perspectiva más pragmática, comentando algunos proyectos que cubran necesidades reales. 

Ferran Galí i Reniu es ingeniero en informática por la Universitat Politècnica de Catalunya y actualmente está trabajando como desarrollador backend en Trovit resolviendo problemas que requieran de un procesado masivo de datos, desde simples análisis hasta la compleja generación de los índices de búsqueda.

Esperamos poder contar con vosotros este próximo día 9, para poder comentar la jugada y de paso poder compartir experiencias e ideas para este año que justo acabamos de comenzar.

Un saludo,

Summary: Introduction to Graph Databases and Neo4j (28/11)

Hi devs! How's the new year going? We hope everything goes well ;-)

As you remember, last 28th of November we received the visit of Neotechnology, the creators of Neo4j and they gave us a talk about this NoSQL database plus an introduction to Graph Databases in our community. Here is the summary of this talk by Stefan Armbrustrer, and of course, we would like to thank Stefan and Dirk for coming from Munich to talk about Neo4J inside our community, it was really a pleasure to host their talk.

First Stefan started his talk speaking about the trends and what is all about with terms like BigData and NoSQL: we need to rethink about how the data is increasing in size really really fast, why everything is almost connected in our IT world and how is increasingly connected (graphs are everywhere). 

Next, the talk continued with the description about what is NoSQL and why is not the magic key to solve all the problems related with query and save data. First, in the process of comparing a relational database with a non-relational one, we must think of what kind of NoSQL database to choose, and we have a bunch of different types: key/value, column-oriented, document, graph, etc. Depending on which are the problems you are trying to solve, the nature of your database will fit better one or another (ex: cost of the size vs complexity of your database).

When you think in a graph database, you must rethink your model in a way of connected nodes with relationships that have properties (key+value). Of course you can use indexes and in the case of Neo4j another functionalities like labels. Using the example of a social network, Stefan presented numbers comparing the performance of Neo4J vs another relational database and the results were really impressive: the rdbms was really slow (1000x) and increasing the number of records to a million didn't change the time response of the query, in fact, that's the key of the power of a graph database.

In this sense, Stefan showed us the strengths of a graph database for example, how powerful the model you can build like your can do in relational database, or how fast it is and how easy is to query, as well as their constrains, including the learning curve or your conceptual change you must do. The presentation went on the benefits of using Neo4j, and how powerful and functionalities it has: it can be embedded and use it with a lot of languages, provides acid transactions, integrates indexes and a REST API, high-availability, highly scalable, etc. Below, Stefan showed us in live how to play with Neo4J, and how beautiful is to query using a browser or with Java code and how easy is to work with this schema-free database. 

The talk ended with the sample of many of the customers Neotechnology are working with, and how they are satisfied using Neo4j and at the end, the closure was the raffle with few books about Graph databases that helped to end with a better taste this great talk. 

Ah! Here you can find the video in our Youtube channel as well as the presentation in our Slideshare account. Hope you will enjoy it as we did ;-)

Finally, from the BarcelonaJUG crew, we would like the best for this new year ...and happy coding!