public async Task <IEnumerable <Article> > GetTrendingAsync()
{
const string cacheKey = "TrendingArticles";
var cachedArticles = _cache.Get <HashSet <Article> >(cacheKey);
if (cachedArticles != null)
{
return(cachedArticles);
}
var trendingPages = await _googleAnalyticsClient.GetTrendingPagesAsync(byte.MaxValue).ConfigureAwait(false);
var articles = await _articleRepository.GetOrderedByDateAsync().ConfigureAwait(false);
var articleList = articles.ToList();
var top10TrendingArticles = new HashSet <Article>();
foreach (var page in trendingPages)
{
var article = articleList.FirstOrDefault(a => page.Path.ToLower().Contains(a.Id.ToLower()));
if (article == null)
{
continue;
}
top10TrendingArticles.Add(article);
if (top10TrendingArticles.Count == 10)
{
break;
}
}
_cache.Set(cacheKey, top10TrendingArticles, new CacheItemPolicy {
AbsoluteExpiration = DateTimeOffset.Now.AddHours(24)
});
return(top10TrendingArticles);
}
public async Task <IEnumerable <PageResult> > GetTrendingPagesAsync(byte maxCount)
{
const string cacheKey = "GoogleAnalyticsTrendingPages";
var cachedResult = _cache.Get <IEnumerable <PageResult> >(cacheKey);
if (cachedResult != null)
{
return(cachedResult);
}
// Don't need to worry about concurrent writes to the cache
var result = await _googleAnalyticsClient.GetTrendingPagesAsync(maxCount).ConfigureAwait(false);
if (result != null)
{
_cache.Set(cacheKey, result, new CacheItemPolicy {
AbsoluteExpiration = DateTimeOffset.Now.AddHours(24)
});
}
return(result);
}
