This is a sample of MarkerManager usage with a big amount of markers.
This MarkerManager is used to manage visibility of hundreds of markers on a map,
based on the map's current viewport and zoom level.
The GoogleMaps API GMarkerManager class is deprecated and it is recommended to use
the open
sourced MarkerManager instead.
That's the MarkerManager implementation used by GoogleMap Control
Please, check out the further information , examples or source.