Cache，Maps和MarkerClusterer问题

Question

我有一个由Google Maps和using MarkerClusterer构建的网站。此网站在大多数情况下都能正常运行，但有时会有多个用户在线，并且过滤的标记集请求将被错误地返回。

示例：我根据一组过滤器参数过滤到一组标记。由于这是处理其他人也过滤到一组不同的标记，这些标记将返回给我而不是我的请求。

如果我坐在页面上并点击刷新，我也会看到此问题。我已在2个用户的测试环境中测试过。通过让一个用户过滤到一组标记，当第二个用户刷新其浏览器窗口时，他们会看到同一组过滤的标记。第一个用户的标记。

我见过示例修复，如果通过向URL添加日期来讨论使用CacheBuster，但在使用MarkerCluserer代码时，我看不到将其添加到选项的位置。它也被要求不要这样做。

数据来自服务器中的数组对象。 markerclusterer.js位于Visual Studio项目的本地。以下是生成地图的页面上的脚本：

<script type="text/javascript" src="http://maps.google.com/maps/api/js?v=3.11&sensor=false"></script>
<script type="text/javascript" src="/Scripts/markerclusterer.js"></script>

<script type="text/javascript">
var infowindow;
var map;
var markerdataLength; //en - 5-8-2013
var prev;

$(document).ready(function () {
    setTimeout("gmarkers()", 500);
});

function gmarkers() {

    markerdataLength = 0;

    $("#map_canvas").fadeTo(500, 0.3);
    $("#pwait").show();

    $.ajax({
        type: "POST",
        url: "MapSearch.aspx/GetMarkers",
        data: "{}",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (msg) {

            $("#map_canvas").fadeTo(0, 0.3);
            $("#pwait").show();

            var markerdata;
            markerdata = msg.d;
            msg = null;
            var latlng = new google.maps.LatLng(52.50, -98.35);
            var myOptions = {
                zoom: 3,
                center: latlng,
                //mapTypeId: google.maps.MapTypeId.HYBRID,
                mapTypeId: google.maps.MapTypeId.TERRAIN,
                mapTypeControl: true,
                mapTypeControlOptions: {
                    position: google.maps.ControlPosition.TOP_RIGHT
                },
                panControl: true,
                panControlOptions: {
                    position: google.maps.ControlPosition.TOP_LEFT
                },
                zoomControl: true,
                zoomControlOptions: {
                    position: google.maps.ControlPosition.TOP_LEFT
                },
                scaleControl: true,
                scaleControlOptions: {
                    position: google.maps.ControlPosition.BOTTOM_CENTER
                },
                streetViewControl: true,
                streetViewControlOptions: {
                    position: google.maps.ControlPosition.TOP_LEFT
                }
            };

            //initialize the info window (balloon popup)
            infowindow = new google.maps.InfoWindow();

            //draw the map with the above settings
            map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);


            /***************************MARKER CLUSTERER **********************************************/
            var imageUrl = 'http://chart.apis.google.com/chart?cht=mm&chs=24x24&chco=' +
            'FFFFFF,008CFF,000000&ext=.png';  //Blue


            var markers = [];

            if (markerdata != "undefined" & markerdata.length > 0) {  //run this code if the data is not null.  data is the markers in json format

                markerdataLength = markerdata.length; //en - 5-8-2013

                var i = 0;
                var ro = new RepeatingOperation(function () {
                    var dataWell = markerdata[i];
                    var mlatLng = new google.maps.LatLng(dataWell.la, dataWell.lo);
                    var marker = new google.maps.Marker({
                        id: dataWell.id,
                        position: mlatLng,
                        title: dataWell.t,
                        icon: imageUrl  //iconstring
                    });
                    //set the marker click code to show the info window
                    var fn = markerClick(dataWell.id);
                    google.maps.event.addListener(marker, 'click', fn);
                    google.maps.event.addListener(marker, 'clusteringend', clusteringDone()); //en - 5-8-2013
                    markers.push(marker);

                    if (++i < markerdata.length) { ro.step(); }
                    else {

                        var mcOptions = {
                            gridSize: 90,   //default grid size is 60 was using 35.  higher #'s draw faster.
                            maxZoom: 20,     //defines how close u are before no more clusters are drawn
                            minimumClusterSize: 15
                        };

                        var mc = new MarkerClusterer(map, markers, mcOptions);
                    }

                }, 100);
                ro.step();

            }

            else {
                alert("No wells were found.");
                $("#map_canvas").fadeTo(300, 1);
                $("#pwait").hide();
            }
        }
    });
}