Most applications require configuration that is specific to the environment in which they run. Different environments require different configurations and it is highly desirable not to have to rebuild and repackage applications for each different case. MicroProfile Config allows you to separate configuration from microservices code so that the values required by the service can be maintained externally to the code. The configuration data can come from different locations and in different formats, for example from system properties and system environment variables. For OpenLiberty customers, the mpConfig-1.3 feature adds the Liberty server.xml file as a Config Source. This allows you to easily and dynamically change your application's configuration by simply adding or modifying variables in your server.xml file. In addition, Liberty builds on previous versions of MicroProfile Config with enhancements in the areas of implicit converters and the mapping of config properties to environment variables.


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