...
When a dynamic map engine is configured, it is setup so that it points to one or more other map engines that all have the same configuration and then . Then anything that previously pointed to the original map engine is changed to point to the new map engine, or the old map engine is renamed and the dynamic map engine is given the id of the old map engine.
Then the The dynamic map engine then provides fail over if one of the map engines fails or it will cycle between the map engines passing the incoming requests to each one it turn to provide load balancing.
The dynamic map engine is also useful for developers and administrators that who need to test multiple map engines and don't want to have to change map engine id's in the client configuration. By referring to a dynamic map engine in the client map view configuration that , the real map engine is specified in the dyanmic dynamic map engine configuration and so can be changed without having to alter the client configuration.
...