Microservices = Death of the Enterprise Service Bus (ESB)? – Slide Deck and Video Recording

Posted in API Management, Cloud, EAI, ESB, Java / JEE, Microservices, SOA on June 29th, 2015 by Kai Wähner

In 2015, the middleware world focuses on two buzzwords: Docker and Microservices. Software vendors still sell products such as an Enterprise Service Bus (ESB) or Complex Event Processing (CEP) engines. How is this related?

Docker is a fascinating technology to deploy and distribute modules (middleware, applications, services) quickly and easily. Most people agree that Docker will change the future of software development in the next years. I will do another blog post about how Docker is related to TIBCO and how you can deploy and distribute Microservices with Docker and TIBCO products such as TIBCO EMS and BusinessWorks 6 easily.

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Right Technology, Framework or Tool to Build Microservices

Posted in Analytics, API Management, Big Data, Cloud, EAI, ESB, In Memory, Java / JEE, SOA on May 27th, 2015 by Kai Wähner

Last week, I gave a talk at a German conference (Karlsruher Entwicklertag 2015) about Microservices. The following slide deck shows plenty of different technologies (e.g. REST, WebSockets), frameworks (e.g. Apache CXF, Apache Camel, Puppet, Docker) or tools (e.g. TIBCO BusinessWorks, API Exchange) to realize Microservices.

Abstract: How to Build Microservices

Microservices are the next step after SOA: Services implement a limited set of functions. Services are developed, deployed and scaled independently. This way you get shorter time to results and increased flexibility.

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Micro Services Architecture = Death of Enterprise Service Bus (ESB)?

Posted in API Management, Cloud, EAI, ESB, In Memory, Java / JEE on January 8th, 2015 by Kai Wähner

These days, it seems like everybody is talking about microservices. You can read a lot about it in hundreds of articles and blog posts, but my recommended starting point would be this article by Martin Fowler, which initiated the huge discussion about this new architectural concept. This article is about the challenges, requirements and best practices for creating a good microservices architecture, and what role an Enterprise Service Bus (ESB) plays in this game.

Branding and Marketing: EAI vs. SOA vs. ESB vs. Microservices

Let’s begin with a little bit of history about Service-oriented Architecture (SOA) and Enterprise Service Bus to find out why microservices have become so trendy.

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Real World Use Cases and Success Stories for In-Memory Data Grids

Posted in Analytics, Big Data, Cloud, ESB, In Memory, Java / JEE, NoSQL on November 24th, 2014 by admin

NoSQL Matters Conference 2014

NoSQL Matters is a great conference about different NoSQL topics. A lot of great NoSQL products and use cases are presented. In November 2014, I had a talk about “Real World Use Cases and Success Stories for In-Memory Data Grids” in Barcelona, Spain. I discussed several different use cases, which our TIBCO customers implemented using our In-Memory Data Grid “TIBCO ActiveSpaces“. I will present the same content at data2day, a German conference in Karlsruhe about big data topics.

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Book Review: “Java EE 7 Developer Handbook” by PACKT / Pilgrim

Posted in Java / JEE on November 26th, 2013 by Kai Wähner

Java EE 7 Developer Handbook is a book for experienced Java developers, published by PACKT. Author is Peter A. Pilgrim.

The books introduces many important Java EE 7 specifications: CDI, EJB, JPA, Servlets, JMS, Bean Validation, JAX-RS and some other stuff such as WebSockets, HTML5 support and Java Transaction API. Each chapter contains an introduction, source code examples and explanations of most important features and configurations. Source code examples can be downloaded, too.

Cool side note
Introduces and uses Gradle as build system and Arquillian for writing integration tests.

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JBoss OneDayTalk 2013: “NoSQL Integration with Apache Camel – MongoDB, CouchDB, Neo4j, Cassandra, HBase, Hazelcast, Riak, etc.”

Posted in EAI, ESB, Java / JEE on October 24th, 2013 by Kai Wähner

JBoss OneDayTalk is a great annual event around open source development. I have done a talk about “NoSQL Integration with Apache Camel”. This blog post shows you the updated slide deck of this talk.


SQL cannot solve several problems emerging with big data. A distributed, fault-tolerant architecture is necessary. NoSQL comes to the rescue, but therefore it does not use SQL as its query language or give full ACID guarantees. Thus, in the future you will have to learn new concepts and integrate these NoSQL databases as you integrate SQL databasestoday. The open source integration framework Apache Camel is already prepared for this challenging task.

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Showdown: Integration Framework (Spring Integration, Apache Camel) vs. Enterprise Service Bus (ESB)

Posted in EAI, ESB, Java / JEE, SOA on December 20th, 2012 by Kai Wähner

I had a talk at Java User Group Frankfurt (JUGF): “Showdown: Integration Framework (Spring Integration, Apache Camel) vs. Enterprise Service Bus (ESB)”. The room was fully packed! Interest in integration frameworks, ESBs, and corresponding tooling increases every year… I uploaded the slides at Slideshare:

If you have any questions or other feedback, please write a comment or contact me via Email, Twitter or Social Network (LinkedIn, Xing).


Best regards,

Kai Wähner (Twitter: @KaiWaehner)

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What is the TCO difference between IBM WebSphere and Open Source JBoss? – Just my two cents…

Posted in Application Server, BPM, Cloud, EAI, ESB, Java / JEE, SOA on December 19th, 2012 by Kai Wähner

Disclaimer: I work for an “open source company”. The following is my personal opinion!

Great Article: “What is the TCO difference between WebSphere and JBoss?”

I have spotted a really great article about comparing prices of open source and proprietary products: “What is the TCO difference between WebSphere and JBoss?“. The interesting aspect is, that this article is written by an IBM-biased company (Prolifics). Usually, only open source vendors write such comparisons. I really like this article, seriously! It is good to see comparisons not only by open source vendors, but also by vendors such as IBM (in this case, Prolifics cannot be considered unbiased, it is an IBM consulting company – but that is fine). I just want to give my two cents to this article in the following…

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Enterprise-ready Tool Support for Apache Camel

Posted in EAI, ESB, Java / JEE on November 23rd, 2012 by Kai Wähner

Apache Camel is my favorite integration framework on the Java platform due to great DSLs, a huge community, and so many different components. Camel is used by many developers from different companies all over the world. However, most guys are not aware that some really cool and – more important – enterprise-ready tooling is available for Camel, too. Many people ask me about Camel tooling when I do talks at conferences. This is the reason for this short blog post about Camel tooling.

[FYI: I work for Talend (one of the vendors). Please also read the comments from my Red Hat friends at the bottom!]

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My Talks at JavaOne 2012: “Lessons learned from JVM Languages (Java vs Groovy vs Scala vs Clojure vs JRuby vs Jython vs Kotlin)” and “Cloud Integration with Apache Camel”

Posted in Cloud, EAI, ESB, IT Conferences, Java / JEE on October 3rd, 2012 by Kai Wähner

These days, I am at JavaOne 2012 in San Francisco. That’s the largest and most important Java conference worldwide. In this blog post, I wanna share the slides of my two talks…

Lessons learned: Use of Modern JVM Languages besides Java

I explain my lessones learned while using other programming languages on the Java Platform besides Java, e.g. Groovy, Scala, Clojure, JRuby, Jypthon, Erjang, and others.

Lessons learned: Use of Modern JVM Languages besides Java – JavaOne 2012 from Kai Waehner


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