cache MusicBrainzReleaseGroupId

MediaBrowser.Controller/Entities/Audio/MusicAlbum.cs

@@ -150,6 +150,10 @@ namespace MediaBrowser.Controller.Entities.Audio
             return RecursiveChildren.OfType<Audio>().Any(i => i.HasArtist(artist));
         }
 
+        /// <summary>
+        /// Gets or sets the name.
+        /// </summary>
+        /// <value>The name.</value>
         public override string Name
         {
             get
@@ -164,6 +168,10 @@ namespace MediaBrowser.Controller.Entities.Audio
             }
         }
 
+        /// <summary>
+        /// Gets or sets the display type of the media.
+        /// </summary>
+        /// <value>The display type of the media.</value>
         public override string DisplayMediaType
         {
             get
@@ -175,5 +183,11 @@ namespace MediaBrowser.Controller.Entities.Audio
                 base.DisplayMediaType = value;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the music brainz release group id.
+        /// </summary>
+        /// <value>The music brainz release group id.</value>
+        public string MusicBrainzReleaseGroupId { get; set; }
     }
 }

MediaBrowser.Controller/Providers/Music/FanArtAlbumProvider.cs

@@ -116,16 +116,22 @@ namespace MediaBrowser.Controller.Providers.Music
         {
             cancellationToken.ThrowIfCancellationRequested();
 
-            var releaseGroupId = await GetReleaseGroupId(item.GetProviderId(MetadataProviders.Musicbrainz), cancellationToken).ConfigureAwait(false);
+            var album = (MusicAlbum)item;
 
-            if (string.IsNullOrEmpty(releaseGroupId))
+            if (string.IsNullOrEmpty(album.MusicBrainzReleaseGroupId))
+            {
+                album.MusicBrainzReleaseGroupId = await GetReleaseGroupId(item.GetProviderId(MetadataProviders.Musicbrainz), cancellationToken).ConfigureAwait(false);
+            }
+
+            // If still empty there's nothing more we can do
+            if (string.IsNullOrEmpty(album.MusicBrainzReleaseGroupId))
             {
                 SetLastRefreshed(item, DateTime.UtcNow);
 
                 return true;
             }
 
-            var url = string.Format("http://api.fanart.tv/webservice/album/{0}/{1}/xml/all/1/1", APIKey, releaseGroupId);
+            var url = string.Format("http://api.fanart.tv/webservice/album/{0}/{1}/xml/all/1/1", APIKey, album.MusicBrainzReleaseGroupId);
 
             var doc = new XmlDocument();