request timeout in node application - angularjs

Question

The request I make to my node api takes more than 4 minutes to respond. While the time the response is received. The angular app does not accept the response. On firebug, the url turns red.
How can I overcome this.
api.route('/allsearch')
.post(function(req,res){
var filters=req.body.everything;
var filterid=req.body.filterId;
var searchid=req.body.searchid;
var zipgroup=req.body.zipgroup;
var myObject = new Array();
function getData(docs, filters, filterid, callback) {
function loop(i) {
searchingalgo(docs[i], filters, filterid, function(pers){
myObject[i] = pers;
if (i < docs.length) {
loop(i + 1);
} else {
callback();
}
});
};
loop(0);
};//closing get data()
Searchradius.findOne({"searchid" : searchid, user: req.decoded.id}).exec(function(err, docs) {
// Array to hold async tasks
var asyncTasks = [];
// Loop through some items
zipgroup.forEach(function(item){
// We don't actually execute the async action here
// We add a function containing it to an array of "tasks"
asyncTasks.push(function(callback){
// Call an async function, often a save() to DB
console.log(item);
searchingalgo(item, filters, filterid, function(pers){
myObject[item] = pers;
// Async call is done, alert via callback
callback();
});
});
});
Async.parallel(asyncTasks, function(){
//console.log(myObject);
Searchradius.update({ _id: searchid }, { $set: { ucounteds: myObject , uzips: zipgroup }}, function(err, result){
if(err) {
res.send(err);
return;
}
var fields = ['city', 'state', 'zip','distance', 'count'];
var myresults = [];
var tc=0;
var newMyobj= new Array();
co=0;
zipgroup.forEach(function(item){
tc+=myObject[item];
//myresults.push(jobj);
});
for(i=0;i<zipgroup.length;i++){
newMyobj[i]=myObject[zipgroup[i]];
}
console.log(tc);
Searchfilter.update({ _id: filterid }, { $set: { counted_results: tc }}, function(err, resultupdate){
//console.log(resultupdate);
//console.log(tc);
});
// console.log(myObject);
// console.log(newMyobj);
res.json({
success: true,
zips: zipgroup,
states: docs.states,
cities: docs.cities,
distances: docs.distances,
counted_results : newMyobj,
});
}); //update searchradius
}); //getdata function
}); //searchradius findone
});
As requested, this is my node API. the zipgroup is a array of zips like
[37663, 37664, 37669, 37671, 37660, 37669, 37667, 37668, 37666, 37665, 37662, 37661]
Just to be clear the collection Consumer1s has more than 2900009876 documents. It is indexed properly and the query is taking the least time possible. But I am still facing this problem.
Any suggestions would be helpful.
This is my post request from angular controller.
$http.post('/api/allsearch',
{
"everything":$scope.filterSearch ,
"searchid":$routeParams.id,
"filterId": $scope.filterId,
"zipgroup" : $scope.zipgroup
})
.success(function(data){
for(var i=0; i<data.zips.length;i++){
oneset={
"zip": data.zips[i],
"state": data.states[i],
"city": data.cities[i],
"distance": data.distances[i],
"count": data.counted_results[i]
};
$scope.totalCount+=data.counted_results[i];
$scope.results.push(oneset);
}
angular.forEach($scope.results, function (result) {
result.distance = parseFloat(result.distance);
});
$rootScope.processing=false;
$scope.filterlinkdisplay=true;
});

Answer 1

There are at least several options:
set AngularJS $http timeout for 10 mins or so, so that AngularJS request doesn't time out, waiting for 4 mins to get the data
polling: 1) AngularJS app does initial request 2) Node.js server issues a unique token to AngularJS app for this request and starts working on collecting data 3) AngularJS app waits for several mins and does a request with previously received token to get data 4) If result is ready, you're done. If not, wait again and do another request from AngularJS
use WebSocket. On client side it is supported by many browsers, on server side use ws. It's a bi-directional protocol, so server can notify clients when data is ready.