lunes, 9 de abril de 2018

Arquitectura y despliegue de aplicaciones con Openshift (19/4)


Hola JUGgers!

Volvemos a la carga con otro evento (ojo en poco tiempo tendremos varios) ;-) ¡Estad atentos!

En esta ocasión nos centraremos de la mano de GFT en la solución de RedHat para el desarrollo, despliegue y gestión de contenedores en la nube: Openshift

Openshift es una de las plataformas PaaS líderes en gestión de contenedores Docker que ofrece RedHat y la idea del evento, además de conocer por encima la arquitectura de la plataforma, es explicar la necesidad de una herramienta como esta en nuestro día a día, dónde los contenedores Docker, DevOps, Sistemas de integración continua, etc… están a la orden del día. Entraremos también un poco más en detalle para explicar cómo se suelen desplegar las aplicaciones, la mayoría de ellas microservicios, y lo más importante, basada en nuestras propias experiencias en proyectos actuales dentro de GFT.


Los ponentes en esta ocasión serán Ivan Fontanals y Jordi Sola de GFT. Ivan es un entusiasta de las nuevas tecnologías, arquitecturas y sistemas de información. Lleva más de 10 años trabajando como arquitecto de software, sobretodo en temas de J2EE, y durante los últimos 2-3 años, metido también en temas de DevOps en GFT. Jordi es un entusiasta del desarrollo, especialmente en Java. Se ha especializado en el control de calidad del código y estándares de desarrollo. Tras 8 años en GFT, ha descubierto su interés por el mundo de los contenedores y el ‘continuous release’, y ha enfocado su trabajo en la automatización de procesos en OpenShift. En su tiempo libre, participa de varios proyectos OpenSource, manteniendo librerías propias, colaborando en el desarrollo del lenguaje de programación Ceylon (https://ceylon-lang.org) y como miembro asociado de la comunidad JCP.













Agradecer una vez más a nuestros amigos de Ubiqum que nos ceden el espacio de sus oficinas para realizar la charla y también dar las gracias a GFT que nos proporcionarán algo de comer y de beber para hacernos más llevadero el networking de después de la charla ;-)

Nada más, recuerda reservar tu plaza a través de Meetup y nos vemos el próximo Jueves 19 en Ubiqum!

domingo, 8 de abril de 2018

Microservicios con Spring Boot y Spring Cloud con Despliegue en Docker y Kubernetes (28/4)

Hi devs!

(Antes de nada, agarraos, que este mes vamos fuertes! ;-)

Dicho esto, vamos a por otro Hackday relacionado con Spring Boot, Spring Cloud, Docker y Kubernetes para el próximo sábado día 28. Btw, estamos abiertos a dónde realizarlo, contacta con nosotros si estáis interesados en ofrecer vuestras oficinas ;-)

Los grupos de usuarios de Java de España y Latinoamérica nos hemos unido de nuevo para compartir conocimientos. Desde Febrero del 2018 intentaremos reunirnos cada dos meses para realizar talleres sobre temas de tecnología de gran interés en nuestras comunidades (aquí o aquí podéis consultar algunas sesiones anteriores).

En esta ocasión y desde Latinoamérica, el grupo de usuarios de Perú será el encargado de orientar nuestra segunda sesión en el mes de abril del 2018: "Microservicios con Spring Boot y Spring Cloud con Despliegue en Docker y Kubernetes"

Únete a este evento y haz parte de las comunidades de habla hispana!

Si es posible, trae tu laptop o equipo portátil para que practique con nosotros, tendremos 2 horas de sesiones técnicas y ejercicios prácticos.
* Agenda
  • 17:00 - 17:30 Hands on lab: Instalación y configuración, explicación de la metodología.
  • 17:30 - 17:45 Presentación
  • 17:45 - 18:45 Workshop
  • 18:45 - 19:00 Feedback
  • 19:00 - 20:00 Reunión local cada JUG

* Requisitos:

Hacen parte de nuestra comunidad los grupos: Barcelona JUG, Cali JUG, Coruña JUG, Ecuador JUG, Guate JUG, Madrid JUG, Málaga JUG, Medellín JUG, Nicaragua JUG, Panamá JUG, Perú JUG y Vigo JUG
Esta sesión estará moderada por Perú JUG apoyada por Medellin JUG.

* Speakers
- José Díaz (@jamdiazdiaz): Es ingeniero Informático, con amplia experiencia en análisis, diseño e implementación de soluciones SOA y Micro Servicios desde hace 17 años, aplicando metodologías ágiles y buenas prácticas del PMI. Actualmente se desempena como Arquitecto de Software senior en Everis Perú destacado en el desarrollo del nuevo Home Banking para el Banco de Crédito del Perú (BCP) bajo arquitectura de Micro servicios. Jose es el fundador y dueño de JOEDAYZ.PE empresa dedicada a entrenamiento en linea y presencial de cursos de programación. Tambien es el Líder del Grupo de Usuarios de Java de Perú, grupo de usuarios de Java reconocido mundialmente por Oracle. Facilitador, Organizador y Ponente en Eventos alrededor de tecnologías Java, Java EE, Cloud Native, Micro Servicios y Serverless.

- Ytalo Elias Borja Mori (@ytachi0026 ): Ytalo es Software Engineer in Avantica, Master’s degree at UCL. Con experiencia de 8 años en proyectos en desarrollo OO con Java y JavaScript, usando buenas prácticas y patrones de software , así como trabajo en sistemas operativos basado en Unix. Actualmente trabaja para Avantica (empresa de software Costarricense) en sus oficinas de Perú para cuentas en Estados Unidos. Es responsable por el desarrollo backend en una compañía americana.

Ah! Casi nos olvidamos! Agradecer una vez más a nuestro amigos de RocketROI que nos ofrecen sus oficinas para realizar el evento y también nos invitarán a algo de beber y de picar ;-)


Nada más por ahora, recuerda de reservar tu plaza a través de Meetup y nos vemos a finales de mes!

viernes, 19 de enero de 2018

Gambling with Leopards - Ben Evans (24/1)

Hi JUGgers !!!

Ready for our next event... next Wednesday 24th? (yes, we know without too much time in advance) but... we would like to the advantage of Ben Evan's being in our city and we've convinced him to give us a talk ;-)

This is a fairly light talk, where Ben talks about the experience of writing a full-size reference application - BetLeopard - which is an open-source implementation of an engine for betting on horse racing.

In the talk Ben will show several different ways of approaching a calculation problem - first by using Java 8 lambdas, then by using Hazelcast in-memory data grid and then with Apache Spark for processing and then again with the new Hazelcast Jet technology.

It covers processing techniques, some domain design, serialization as well as showing how to get started with Spark and Jet. It should be useful for anyone who wants to learn about different approaches in modern distributed processing.

This time we have to thank Ocado for offering us his facilities for the event and inviting us to something to eat and drink and do some networking ;-)

Have a good weekend and see you next Wednesday!

MPORTANT NOTICE

This year to prevent the no-show effect for those people that register and never come and to avoid problems to our sponsors ( buying food for not present people ) and to us ( searching for bigger rooms ), we'll charge 2 EUR to everyone registering and we will give back that amount for those that really attend the event.

Don't forget to register

miércoles, 3 de enero de 2018

Lazy Java - Mario Fusco (18/01)

Hi devs !!!

We continue this year 2018 with a great speaker Mario Fusco and a very interesting topic : lazyness ( a purpose for this new year ? ;) )

Like all imperative languages Java is, with some minor but notable exceptions, an eagerly evaluated programming language. Nevertheless the introduction of lambdas in Java 8 also allowed the adoption of some lazy patterns and data structures that are more typically employed in functional languages. Streams represent the most evident example of how also native Java API has taken advantage of laziness, but there is a number of other interesting scenarios where laziness can be an effective solution to quite common problems. In fact laziness is the only possible technique to process potentially infinite amount of data, or more in general to delay the expensive evaluation of an expression only when and if it is necessary. But laziness is even more than that: for instance the reader monad delays not only a computation but also the need of external dependencies thus lowering the abuse of dependency injection, while a trampoline uses laziness to delay and then linearize recursive calls preventing the overflow of the stack. The purpose of this talk is illustrating why and how implementing laziness in Java with practical examples delivered with both slides and live coding sessions.


Mario is a senior software engineer at Red Hat working at the development of the core of Drools, the JBoss rule engine. He has a huge experience as Java developer having been involved in (and often leading) many enterprise level projects in several industries ranging from media companies to the financial sector. Among his interests there are also functional programming and Domain Specific Languages. By leveraging these 2 passions he created the open source library lambdaj with the purposes of providing an internal Java DSL for manipulating collections and allowing a bit of functional programming in Java. He is also a Java Champion and the co-author of "Java 8 in Action" published by Manning.

Hope you can make it and we can finally meet there.

IMPORTANT NOTICE

This year to prevent the no-show effect for those people that register and never come and to avoid problems to our sponsors ( buying food for not present people ) and to us ( searching for bigger rooms ), we'll charge 2 EUR to everyone registering and we will give back that amount for those that really attend the event.

Don't forget to register


Happy coding

Let's try for 2018...

Hi JUGgers!

First of all, happy new Year! We hope this 2018 will be really good for all of you in every way ;-)


We want to share with you all few words about of our hopes and expectations for this year. As a developers we have a lot of ideas to grow, like be able to attract more women, organize events for younger people (to introduce them to the world of software development), run a hackaton (may be with another developer community?), organise events more focused in another technologies (may be learn new languages, why not?), contribute to opensource projects or try to help other people in need. To achieve all this, we need to grow, and from the organising team we are always open to welcome members who want to be active and go in this direction. So if you have time, we invite you to participate more actively in the community to propose or organise events or any other activity that you can do to contribute to all of us. Ping us in any case ;-)  


Looking back on 2017, we work hard to organize more than 1 event per month (at least 14 events) and a really big one ( our lovely Java & JVM Barcelona Conference ). As you can imagine organizing events is always an unpaid effort under no circumstances, which requires us a significant amount of personal time (which we would like to have more of). Reviewing last year, we realised that the attendance rate was really low in many, if not most, cases (below 30%) and on reflection, we think this is not a good sign. Everyone has ups and downs (and we all have our own schedules), and we can always understand that there is a percentage of people who for various reasons cannot attend to our events. Last minute contingencies may also arise, but when not even half of the people registered for an event attend, it denotes a lack of seriousness, if not indifference, and we think it is not good. There are many people involved around an event, and also companies and people that are working for those companies, who spend time organizing a space, welcoming the attendees, setting up a room, buying some food and drink, etc. We think it is not fair for all of these people (organisers included) that their efforts are not rewarded, since at the end the number of people who attend is not by far the expected. It also happens that there are people who can remain on the waiting list and therefore are unable to attend to events for those who do not decide to cancel their attendance.


For these reasons we have decided to introduce some small changes in the way in which we are organising our events. This year in order to prevent the no-show effect for those people that register and never come that are creating problems to our sponsors and to us, we'll charge a small amount of money (about 2-3€) to everyone registering to one of our events. Finally, you do not have to worry about the money if you finally attend to one of our events, because we will give back that amount for those that really attend. We don't need or want the money, but we hope that in this way, the people who register will really come to the events we organize with a lot of care.

We hope you understand the reasons that push us to making this movement, but we cannot accept to continue disrespecting the organizers of the events as well as the companies that dedicate their time and effort to us.

Happy coding and see you soon! ;-)

miércoles, 6 de diciembre de 2017

Starting JBCN18 - volunteers event (9/1)

Hi devs!

Ready for our next event? We hope so! Next event will be a bit different, but we hope you still will enjoy it ;-)

We suppose that many of you attended (and enjoyed) last edition of the JBCNConf (http://www.jbcnconf.com). Many of you have shared with us some ideas and showed some interest in joining the organisation team of the Java & JVM Barcelona Conference.

That's why we have planned this session: we'd love to share all the details about the JBCNConf to all the interested people that want to be part of their organizer's team. Our idea is to have this "starting meeting point" and explain the main efforts and things to accomplish and see where somebody as an individual can help in order to have a successful conference for everyone.


We have plans of doing a lot of great things, ...but first WE NEED HELP in order to arrive to all of them ;-)

So, what do you think? Would you like to have the first hand experience of organising a great tech event for more than 450 JVM developers? It is a great challenge and there a lot of things where you can help, for sure! ;-)

Give us a hand and be part of this great adventure that the JBCNConf is !


PD: Our idea is to organise first this face-to-face event and then try to organise ourselves in a more agile way communicating with online tools (Hangout, Skype, etc) and include more people involved in the organisation of the conference ;-)

jueves, 16 de noviembre de 2017

Performance Tuning Clinic (22/11)

Eyy devs !!

Next Wednesday we'll host a very interesting type of event : a performance tuning clinic.

This will be a participatory session meaning bring your questions and don’t feel shy to provide answers to others questions. Even better, if you have (non-sensitive) performance data such as garbage collection logs, do bring it along. Topic can go in many directions from why MicroServices are a performance game changer to why immutability is the wrong solution to the right question.

This event will be conducted by Kirk Pepperdine.

After getting his start in the world if super-computing, Kirk went on to the world of Java eventually becoming a Java Champion in 2006 in recognition for his work advancing the state of Java performance tuning. Since then Kirk has co-founded jClarity, a company building the next generation of performance diagnostic tooling based on JPDM, a performance diagnostic process that he developed. Additionally, he authored and delivers the original Java Performance Tuning Workshop. Kirk has written many articles and spoken at many conferences on the subject of performance tuning.

Hope to see you there :)

Register !!!!!