CacheController.cs

        public byte[] GetRequest(byte[] data)
        {
            SearchQuery query = _repo.GetQuery(Encoding.UTF8.GetString(data));
            List<SearchResult> cachedResults = null;

            if (query != null && (DateTime.Now - query.Created).TotalSeconds < TTL)
            {
                // If its a previous non-stale query then use the
                // results stored in the cache
                cachedResults = _repo.
                    ListResultsBySearchQuery(query.Id);
            }
            
            return Encoding.UTF8.GetBytes(
                JsonConvert.SerializeObject(cachedResults));
        }

SearchController.cs

        private List<SearchResult> GetCachedResults(string text)
        {
            byte[] result = _cache.Call("GetRequest", Encoding.UTF8.GetBytes(text));

            return JsonConvert.DeserializeObject<List<SearchResult>>(
                                Encoding.UTF8.GetString(result));
        }