public List <SearchResult> GetSearchResultsForTerm(string searchTerm)
{
var cacheKey = $"{_searchEngine.Name}:{searchTerm}";
if (!_memoryCache.TryGetValue <List <SearchResult> >(cacheKey, out var cachedValue))
{
cachedValue = _searchEngine.GetSearchResultsForTerm(searchTerm);
_memoryCache.Set(cacheKey, cachedValue, new MemoryCacheEntryOptions().SetSlidingExpiration(TimeSpan.FromHours(1)));
}
return(cachedValue);
}