public async Task <IEnumerable <Story> > GetTopTwentyBestStories()
{
var cachedStories = cache.Get <IEnumerable <Story> >(Top20StoriesCacheKey);
if (cachedStories != null)
{
return(cachedStories);
}
var tasks = new List <Task <HackerNewsItem> >();
var top = await httpClient.GetTopNBestStoriesIdsAsync(settings.TopStoriesCount);
top.ToList().ForEach(s => tasks.Add(httpClient.GetItemAsync(s)));
var stories = (await Task.WhenAll(tasks)).Select(u => new Story()
{
commentCount = u.descendants,
postedBy = u.by,
score = u.score,
time = u.time.ToDateTimeOffset(),
title = u.title,
uri = u.url
});
cache.Set <IEnumerable <Story> >(Top20StoriesCacheKey, stories, TimeSpan.FromSeconds(settings.AbsoluteCacheTimeoutInSecond));
return(stories);
}
