public async Task <IActionResult> Append([FromBody] AppendReq req) { if (string.IsNullOrWhiteSpace(req.Key) || req.Value == null) { NotFound("Method Dictionary/Append params"); } Logger.LogInformation($"Append dictionary key: {req.Key}, value: ${req.Value}"); await _service.Append(req.Key, req.Value).ConfigureAwait(false); return(Ok()); }