| = Rules of Thumb |
| :jbake-type: page |
| :jbake-status: published |
| |
| == Configuration |
| |
| * Configuration settings should have configurable defaults at the module, ear, server and cluster level (when clustering is added). |
| For example, security settings should be configurable on a per ejb, ejb jar, ear and server levels. |
| * Settings should have a smooth increase in complexity from very simple to complex. |
| For example, a cache setting could start with a simple max-size, and over time the user could increase the complexity by adding configuration for disk paging up to specification of complex flushing rules. |
| |
| == Validation |
| |
| * Applications should be fully validated before handing it off to the deployment system. |
| This vastly simplifies the deployment system because it assumes that an application is valid. |
| As a corollary, the deployment system should not be complicated with code that tests for invalid deployments or with code to print graceful error messages to a user. |
