ASP.NET Core StackExchange.Redis Filtering Value

I have a .NET Core 6.0 project that I use StackExchange.Redis.

First, I am wondering if I can filter the value coming with Key-Value pair.

When I get the key, I get all the values and after that I am filtering them.

Is there anyway to filter values before getting them all or I have to filter it after getting all the values ?

-- TestModel2.cs

public class TestModel2
{
  public List<Product> Products { get; set; }
  public List<Category> Categories { get; set; }
}

-- RedisCacheService.cs

public async Task<T> GetAsync<T>(string key) where T : class
{
  string value = await _client.GetDatabase().StringGetAsync(key);
  return value.ToObject<T>();
}

--ToObject

public static T ToObject<T>(this string value) where T : class
{
  return string.IsNullOrEmpty(value) ? null : JsonConvert.DeserializeObject<T>(value);
}

--CacheController.cs

[HttpGet]
[Route("GetProductsByCategoryId")]
public async Task<IActionResult> GetProductsByCategoryId(int id)
{
    var models = await _cacheService.GetAsync<List<TestModel2>>("models3");
    if (models != null && models?.Count() > 0)
    {
        try
        {
            var model = models[0].Products.Where(x => x.CategoryId == id);
            if (model != null)
            {
                return Ok(model);
            }
        }
        catch (Exception)
        {
            return StatusCode(500);
        }
    }
    return BadRequest("Not Found");
}