How to handle large amount of data to display in Google maps required code...

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ASP.NET

Javascript

jQuery

Helo still now i done 3 projects ,and each project i done google map module...in every project i have common doubt that can we handle/show large amount of data in fraction of seconds in google maps page but it is not possible for me ,so anybody can help me is there any way to handle large of data should display in google map in small fraction of seconds.tell me the best ways, thanks in advance.

this is my sample code

function InitailizeDefaultMap() {
try {
var myOptions = {
center: new google.maps.LatLng(18.0000, 79.5800),
zoom: 11,
mapTypeId: google.maps.MapTypeId.HYBRID,
streetViewControl: false,
zoomControl: true,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.DEFAULT
}
}
mapForCanvas = new google.maps.Map(document.getElementById('divMapCanvas'), myOptions);
}
catch (e) {
throw e;
}
}

What I have tried:

i used javascript to get data from database(c# for codebehind) to show in google map i want any other way to this in fraction of seconds