SearchController.cs

        // GET api/search
        [HttpGet("{text}")]
        public IActionResult Get(string text)
        { 
            try
            {
                _logger.LogInformation("Query for {0} arrived", text);
                
                // Search the cache for query

                List<SearchResult> cachedResults = GetCachedResults(text);

                if (cachedResults != null && cachedResults.Count > 0)
                {
                    return this.NestResultMultiple(cachedResults, 0, 
                        "Taken from cache");  
                }

                // Dispatch search jobs with a new search

                Dictionary<string, SearchQuery> queryServices = 
                    new Dictionary<string, SearchQuery>();

                SearchQuery query = new SearchQuery();
                query.MaxResults = 100;
                query.Text = text;

                query = AddQuery(text);

                foreach (string service in _services)
                {
                    queryServices[service] = QueryService(query, service);
                    _logger.LogInformation("Query sent to {0} -> Correlation Id {1}", 
                        service, queryServices[service].Id);
                }

                // ----------------------
                // Do other work here ...
                // ----------------------

                // Collect search results
 
               return this.NestResultMultiple(
                CollectResults(queryServices), 0, 
                    "Query successful");    
            }
            catch (System.Exception e)
            {
                return StatusCode(500, e);
            }
        }