How do I crud using redis

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C#

.NET

database

Injection

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what is the code for add data in redis database using hash datatype of redis in C# asp.net core 3.1?Also what is the concept of master key in it?

I have to analyse the code for add in api and rewrite the code for add so that my data should be added in redis database.

What I have tried:

below is code for add in api

[HttpPost]
        
        [Route("AddTask")]
        public ActionResult Add(TaskModel model)
        {

            if (ModelState.IsValid)
            {
                TaskRepository obj = new TaskRepository();
                obj.AddTask(model);
                obj.Save();
                return Ok();
            }
            else
            {
                return BadRequest();
            }
        }

below is code for add in repository

public void AddTask(TaskModel user)
        {
            ManageTask managetask = new ManageTask()
          {
                description = user.description,
                employeeId = user.employeeId,
                reviewerId = user.reviewerId,
                startdate = System.DateTime.UtcNow,
                enddate = System.DateTime.UtcNow,
                deadline = user.deadline,
                productname = user.productname,

                //SiteUserId= user.SiteUserId,
            };
            _context.ManageTask.Add(managetask);
            _`context.SaveChanges`();
        }

below is code for controller for add

public async Task<iactionresult> Add(TaskModel model)
        {
            using (HttpClient client = new HttpClient())
            {
                StringContent content = new StringContent(JsonConvert.SerializeObject(model), Encoding.UTF8, "application/json");
                string endpoint = "http://localhost:32883/api/employeetask/AddTask";
                using (var Response = await client.PostAsync(endpoint, content))
                {
                    if (Response.StatusCode == System.Net.HttpStatusCode.OK)
                    {
                        TempData[""] = JsonConvert.SerializeObject(model);
                        return RedirectToAction("GetAllTask");
                    }
                    else
                    {
                        ModelState.Clear();
                        ModelState.AddModelError(string.Empty, "server error");
                        return View();
                    }
                }
            }
        }