Query fetching Old Data Windows Phone 8 - windows-phone-8

Question

My WP8 app is fetching old data instead of updated data when I run the query:
private async Task fetchParseData()
{
try
{
var query = ParseObject.GetQuery("Favorite")
.WhereEqualTo("user", ParseUser.CurrentUser.Username);
IEnumerable<ParseObject> results = await query.FindAsync();
this.favorites.Clear();
foreach (ParseObject result in results)
{
string venue = result.Get<string>("venue");
string address = result.Get<string>("address");
string likes = result.Get<string>("likes");
string price = result.Get<string>("price");
string contact = result.Get<string>("contact");
this.favorites.Add(new ItemViewModel { LineOne = venue, LineTwo = address, LineThree = likes, Rating = "", Hours = "", Contact = contact, Price = price, Latitude = "", Longitude = "" });
}
if (favorites.Count == 0)
{
// emailPanorama.DefaultItem = emailPanorama.Items[1];
MessageBox.Show("You do not have any saved cafes. Long press a cafe in main menu to save it.");
}
}
catch (Exception exc)
{
MessageBox.Show("Data could not be fetched!", "Error", MessageBoxButton.OK);
}
}
Can you please help me find where the problem is in this query. I debugged and found error in only this part. SO, my new data is not being fetched by the query.findasync() method.

Answer 1

Windows Phones Web Cache is quite aggressive.
If the servier you are querying from does not explicitly set a cache-duration in the http headers, windows phone will cache all requests (don't know the duration though, but pretty long).
You can:
Set the "Cache-Control: no-cache" Header on your server.
Add a random number (or timestamp) to each request so the uri differs.
Try add the "if-modified-since" header to your requests.
See this question for details.