I have developed an application in GWT which allows users to visualize a 
large graph.  The application has a few requirements:

1.) Display about 5000 nodes & edges
2.) add or delete nodes/edges from the graph
3.) click nodes/edges on the graph & execute a custom callback function
4.) Provide a blank overlay behind the markers so it is not obvious that 
this is a Google Map


I built this using gwt-maps-v2, but it performs very slugglishly.  Load 
time is slow, the elements take a while to reappear on pan/zoom, and the 
blank background flickers on pan/zoom.  I have seen solutions for this 
using javascript such as GMarker and MarkerLIght.  

Is there anything similar for GWT?




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