parallel multiple rss feeds

Controllers/ValuesController.cs

@@ -17,6 +17,7 @@ namespace jezebel.Controllers
     {
         IMemoryCache cache;
         const string jezCache = "jezebelRss";
+        HashSet<string> urls = new HashSet<string>() { "http://jezebel.com/rss", "http://pictorial.jezebel.com/rss", "http://themuse.jezebel.com/rss", "http://thatswhatshesaid.jezebel.com/rss", "http://theslot.jezebel.com/rss" };
 
         public ValuesController(IMemoryCache cache)
         {
@@ -28,12 +29,20 @@ namespace jezebel.Controllers
         {
             using (var httpClient = new HttpClient())
             {
-                var result = cache.Get<Rss>(jezCache);
+               
+                var result = cache.Get<List<Item>>(jezCache);
                 if(result == null || bypassCache)
                 {
-                    var rssRaw = await httpClient.GetStreamAsync("http://jezebel.com/rss");
+                    var lst = new System.Collections.Concurrent.ConcurrentBag<Item>();
+                    Parallel.ForEach(urls, url =>
+                    {
+                        var rssRaw = httpClient.GetStreamAsync(url).Result;
                         var xmlReader = new XmlSerializer(typeof(Rss));
-                    result = (Rss)xmlReader.Deserialize(rssRaw);
+                        var rssDeserialized = (Rss)xmlReader.Deserialize(rssRaw);
+                        rssDeserialized.Channel.Items.ForEach(a => lst.Add(a));
+                    });
+
+                    result = lst.Where(a => !a.Category.Any(b => b.Text.Contains("deals"))).Distinct(new Item()).ToList();
                     using (var entry = cache.CreateEntry(jezCache))
                     {
                         entry.SetValue(result);
@@ -43,8 +52,8 @@ namespace jezebel.Controllers
                 }
 
                 var rng = new Random();
-                var randomArticleNumber = rng.Next(0, result.Channel.Items.Count);
+                var randomArticleNumber = rng.Next(0, result.Count);
-                var randomArticle = result.Channel.Items[randomArticleNumber];
+                var randomArticle = result[randomArticleNumber];
                 var resultString = $"{randomArticle.Title} by {randomArticle.Creator} {randomArticle.Link}";
                 return new ContentResult() { Content = resultString, ContentType = "text", StatusCode = 200 };
                 

Rss.cs

@@ -34,7 +34,7 @@ namespace jezebel
         }
 
         [XmlRoot(ElementName = "item")]
-        public class Item
+        public class Item : IEqualityComparer<Item>
         {
             [XmlElement(ElementName = "title")]
             public string Title { get; set; }
@@ -50,6 +50,16 @@ namespace jezebel
             public Guid Guid { get; set; }
             [XmlElement(ElementName = "creator", Namespace = "http://purl.org/dc/elements/1.1/")]
             public string Creator { get; set; }
+
+            public bool Equals(Item x, Item y)
+            {
+                return x.Title.Equals(y.Title);
+            }
+
+            public int GetHashCode(Item obj)
+            {
+                return obj.Title.GetHashCode();
+            }
         }
 
         [XmlRoot(ElementName = "channel")]