Final answer:
Sharing global elements across Mule applications can be achieved by using a domain project to contain common resources, utilizing Anypoint Studio's Mule Domain Project feature, or through external configuration management tools and properties files for application properties.
Step-by-step explanation:
To share global elements across Mule applications, a common method is to use a shared library or a domain project. A domain project in Mule acts as a container for common resources that can be accessed by multiple Mule applications deployed under the same domain. By placing global configurations, connectors, and components in the domain project, you can maintain a single version of those elements that is used by all the applications that reference the domain, ensuring consistency and simplifying configuration management.
Another approach is to use Anypoint Studio's Mule Domain Project feature, where shared resources such as HTTP configuration, data source configuration, and custom elements like flows or error handling can be defined. Once the domain project is created and the necessary global elements are defined, applications can be configured to reference this domain and inherit those global elements. Changes made in the domain project will automatically propagate to all applications that reference it.
You can also leverage properties files or external configuration management tools to manage application properties that could be considered global elements, such as endpoints or credentials, and make them accessible to multiple Mule applications.