public async Task <ActionResult <GuidInfo> > GetGuidInfoAsync(System.Guid id)
        {
            // try cache first
            var info = await _cache.GetEntityAsync(_cachePrefix, id.ToString());

            if (info != null)
            {
                return(await ProcessGuidInfo(info, true));
            }
            else
            {
                // not cached, try from database
                var infos = await _context.GuidInfos.GetAsync(i => i.Guid == id);

                if (!infos.Any())
                {
                    return(NotFound(new GuidApiError(GuidErrorCode.GuidNotFound)));
                }
                else
                {
                    return(await ProcessGuidInfo(infos[0], false));
                }
            }
        }