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Continuous integration / Continuous Delivery / Continuous Deployment

The terms Continuous Integration, Continuous Delivery and Continuous Deployment can still confuse. Even Jez Humble, author of the book Continuous Delivery commented that there is “confusion around the terms continuous delivery versus continuous deployment and my own thinking and definitions have changed”.(1)

This is my attempt to distinguish, based on the sources listed below.

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Dynamically set Jenkins node

This post explains how to dynamically/programmatically set the node a Jenkins/Hudson job will run on. This is relatively easy to do statically, using the NodeLabel Parameter Plugin, but trickier to do programmatically.

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Cloudbees

I’ve been using CloudBees a lot recently for deploying to ‘the cloud’.
There are a couple of things that attract me to CloudBees…
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Spring MVC Hello World with Continuous Deployment

Oh dear, yet another ‘Hello World!’. But although the functionality is trivial, this little SpringMVC project is complete enough for me to use as a template to bootstrap more complex projects. It consists of:

  • HTML/JSP client
  • SpringMVC server using a Controller/Service/DAO design
  • Maven for build and dependency management

This is an updated version of an older project I created, with the following enhancements:

  • Added a full suite of automated tests (unit, integration and browser based)
  • Added placeholders for JavaScript and images (both can be a little tricky to put in the correct place with SpringMVC)
  • Incorporated into a continuous deployment environment

More details below, but you can find the full source code on this GitHub repository and the deployed app at http://springmvc.shaunabram.cloudbees.net.
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