Camunda Deployment Best Practices

[Jonathan Camenzuli]

Hi,

I have some uncertainty regarding best practices when deploying models and forms. My understanding is that a task maps 1:1 to a form file served in a file-directory structure and are not stored in a deployment in the database. I understand that in order to make a deployment I first prepare all the models and forms and then do a Maven install to create a WAR file, then place this file into tomcat's webapps directory. This is according to: http://www.camunda.org/get-started/developing-process-applications.html

Should each WAR file have a different name (versioned name)?

Since form files (HTML files) are not deployed into the database along with the models how does a task map to the correct form version?

If you could please provide me with some clarity and generally accepted best practices on deploying models and forms I would greatly appreciate it.

Regards,

Johnny

[Bernd Rücker (camunda)]

Hi Jonny.

 

We had a presentation about versioning at the community day in prague (http://blog.camunda.org/2013/10/what-wonderful-community-day-in-prague.html), see http://de.slideshare.net/camunda/community-day-2013-consulting-talks-about-camunda-bpm-best-practices (slide 15ff). There you find the basic answer – but maybe hard to see without the slides.

 

Quick recap:

 

1.)    Easiest: Don’t change the forms or keep forms backwards compatible if you change them.

2.)    If (and only IF) you change forms in a not backwards compatible way you can apply a simple naming convention / folder structure to avoid deploying multiple war’s

3.)    You can deploy versioned WAR files – technically that works perfectly on our platform – but you have to make sure to do some stuff around “registering Process Applications at the shared engine” right. But overall this solution adds quite some complexity – so I recommend to avoid it until you have really good reasons to do so.

 

Cheers

Bernd

Consultant & Evangelist

www.camunda.org/community/team.html

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[Bernd Rücker (camunda)]

P.S: Added https://app.camunda.com/jira/browse/CAM-1482

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