Home » Author Archives: Bilgin Ibryam

Author Archives: Bilgin Ibryam

Bilgin Ibryam is a senior software engineer based in London interested in service-oriented architecture, enterprise application integration and application development. He is also open source enthusiast, Apache Open for Business and Apache Camel committer.

Apache Camel for Micro­service Architectures

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I’ve been using microservice architectures before I knew they were called so. I used to work with pipeline applications made up of isolated modules that interact with each other through queues. Since then a number of (ex)ThoughtWorks gurus talked about microservices. First Fred George, then James Lewis and finally Martin Fowler blogged about microservices making it the next buzzword so ...

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Clustered Idempotent Consumer Pattern with Infinispan

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I’ve created a small project that shows how to use JBoss Infinispan with Apache Camel and the Idempotent Consumer Pattern to guarantee a message will not be processed twice in a clustered environment. Imagine you have an application that has to scale out easily by deploying it on multiple containers. But the application has to process each unique request only ...

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Circuit Breaker Pattern in Apache Camel

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Camel is very often used in distributed environments for accessing remote resources. Remote services may fail for various reasons and periods. For services that are temporarily unavailable and recoverable after short period of time, a retry strategy may help. But some services can fail or hang for longer period of time making the calling application unresponsive and slow. A good ...

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A Docker Maven Plugin for Integration Testing

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What is Docker? Docker is the buzzword that is taking the DevOps world. If you don’t know yet what is Docker, be warned, you will find yourself using it one way or another very soon. The rest of this post assumes some basic understanding of Docker, but if you are not familiar with it now, I’m sure you will come ...

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Software engineering vs Software consulting

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I’ve seen articles with this topic in the past but have to admit to have never read one. If you have, probably you already know which one is the better profession so stop reading this now. If you are still interested, this is my take on the topic. Software engineering Software engineering is great profession. I was engineer in companies ...

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A Camel Demo for Amazon’s Simple Worklfow Service

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In a previous post I explained why AWS SWF service is good and announced the new Camel SWF component. Now the component documentation is ready and here is a simplistic fully working demo. It consist of three independent standalone Camel routes: A workflow producer allows us to interact with a workflow. It can start a new workflow execution, query its ...

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Master/Slave Failover for Camel Routes

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One way to implement a master/slave failover pattern is to have a cluster of instances of an application where one instance (the master) is currently active and the other instances (the slaves) are on standby, ready to take over whenever the master fails. Some projects provide this kind of master/slave support out of the box: Creating a failover deployment for ...

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Building Distributed Workflow Applications on Amazon with Camel

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Pipeline with SNS-SQS A workflow consist of independent tasks performed in particular sequence determined by dynamic conditions. Very often a workflow represents a business process, for example the order processing steps in a ecommerce store. Amazon Web Services offer various tools for building distributed and scalable workflow applications. One approach for building such an application is to use topics and ...

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Transactional caching for Camel with Infinispan

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Some time ago I created a Redis connector for Camel. Redis is awesome key-value store (and a lot more) but then I needed a cache running in the same JVM as Camel and noticed Infinispan which has just switched to ASL v2. There are already other connectors in Camel for caching on the JVM, like Hazelcast and EHCache, but if ...

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Publish/Subscribe Pattern with Apache Camel

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Publish/Subscribe is a simple messaging pattern where a publisher sends messages to a channel without the knowledge of who is going to receive them. Then it is the responsibility of the channel to deliver a copy of the messages to each subscriber. This messaging model enables creation of loosely coupled and scalable systems.             It ...

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