Configuration Parameters Declared as Property Variables

Configuration parameters, such as host names, port numbers, and directories, can be declared as property variables in the IG configuration or in an external JSON file. The variables can then be used in expressions in routes and in config.json to set the value of configuration parameters.

Properties can be inherited across the router, so a property defined in config.json can be used in any of the routes in the configuration.

Storing the configuration centrally and using variables for parameters that can be different for each installation makes it easier to deploy IG in different environments without changing a single line in your route configuration.

For more information, see Properties.