private void SaveRecentSimilarArtist(SimilarArtistModel artistModel)
        {
            try
            {
                using (var session = DocumentStore.OpenSession())
                {
                    IRavenQueryable <SimilarArtistModel> artists = session.Query <SimilarArtistModel>();

                    if (artists.Any(a => a.Name.Equals(artistModel.Name, StringComparison.InvariantCultureIgnoreCase)))
                    {
                        return;
                    }

                    int count = artists.Count();

                    if (count > 50)
                    {
                        var tooMany        = count - 50;
                        var tooManyArtists = artists.Take(tooMany);

                        foreach (var artist in tooManyArtists)
                        {
                            session.Delete(artist);
                        }
                    }

                    session.Store(artistModel);
                    session.SaveChanges();
                }
            }
            catch (Exception e)
            {
                Logger.Log(e.Message, Category.Exception, Priority.Medium);
            }
        }