Getting cached results if available else use the Func and invoke an database GET

CacheHelper.cs

    public class CacheHelper : ICacheHelper
    {
        private readonly ICache _cache;

        public CacheHelper(ICache cache)
        {
            this._cache = cache;
        }

        public IEnumerable<T> GetResult<T>(string cacheKey, Func<IEnumerable<T>> getDatabaseResultsFunc)
        {
            var cachedResult = _cache.Get<IList<T>>(cacheKey);
            if (cachedResult != null) return cachedResult;

            var result = getDatabaseResultsFunc();

            _cache.Insert(cacheKey,result);
            return result;
        }

        public T GetSingleResult<T>(string cacheKey, Func<T> getDatabaseResultsFunc)
        {
            var cachedResult = _cache.Get<T>(cacheKey);
            if (cachedResult != null) return cachedResult;

            var result = getDatabaseResultsFunc();

            _cache.Insert(cacheKey, result);
            return result;
        }
    }

Usage.cs

// Getting cached results if available else use the Func and invoke an database GET
public IEnumerable<That> GetSomething(){
 return _cacheHelper.GetResult("THAT_CACHE_KEY",() => {
    var dbResult = gettingStuffFromDb();
    return dbResult;
 });
}