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Microservice using Docker stack deploy – WildFly, Java EE and Couchbase

There is plenty of material on microservices, just google it! I gave a presentation on refactoring monolith to microservices at Devoxx Belgium a couple of years back and it has good reviews: This blog will show how Docker simplifies creation and shutting down of a microservice. All code used in this blog is at github.com/arun-gupta/couchbase-javaee. Microservice Definition using Compose Docker 1.13 introduced a v3 of Docker ...

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User Story Reflections

Users As its name suggests, a user story describes how a user or customer uses the product–a digital product is captured from the perspective of the users. This avoids a solution-centric view where we worry more about how to provide and implement the product features than why and how people will use them. Understanding who the users are and how the product ...

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Processing billions of events/day

Throughout the lifecycle of a company the IT architecture is bound to change multiple times. There can be many different reasons for such changes. One of the worst reasons for such change can be when developers get bored by a particular solution and just wish to follow whatever the newest hype happens to be. Some of the reasons why the ...

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It’s all digital, stupid.

I’m the stupid one. For years now I’ve heard people talk about “digital” but I failed to grasp the significance. It started with “digital agencies” which I took to be advertising agencies which did websites, although the websites they were trying to build contained a lot of functionality. These odd advertising agencies seemed to offering services more akin to Logica ...

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What programmers want

Recently I’ve been asked by an HR person to tell which factors influence Java programmers wanting to change a job, what is important when we consider a change. I gave it a great deal of thought, and the result has been so extensive as to warrant a blog post. Which I now present here. I don’t aspire to cover everything or ...

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Anomaly Detection Using Metrics and Exception Logs

In this week’s Whiteboard Walkthrough, Ted Dunning, Chief Applications Architect at MapR, will talk about how you can use logs containing metrics and exceptions to detect anomalies in the behavior of a micro-service. For related material on this topic see: “A Better Way to Build A Fraud Detector” Whiteboard Walkthrough video by Ted Dunning  Free pdf of the book “Practical ...

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The Simple Way to Find the Correct Syntax

It happens to the best of us, you are writing some code in a Language that you use sporadically and you start asking yourself what is the correct syntax for this or that. You know many languages and you start wondering how do you iterate the elements of a collection? Is it foreach, for .. in or something else? You know the answer, ...

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Decorating Envelopes

Sometimes Very often I need a class that implements an interface by making an instance of another class. Sound weird? Let me show you an example. There are many classes of that kind in the Takes Framework, and they all are named like *Wrap. It’s a convenient design concept that, unfortunately, looks rather verbose in Java. It would be great to ...

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