How to update/remove certain items in a cache object?

Hello,

How to update/remove certain items in a cache object using IMemoryCache?

When getting cache object, I do below...

[HttpGet]
public IEnumerable<string> Get()
{
string key = "ALLCar-Key";

IList<CarModel> carModelCached = _cache.GetOrCreate(key, entry =>
{
var sampleRecordFromDB = new List<CarModel>
{
new CarModel() { Id = 10, Name = "Hyundai", Year = 1998 },
new CarModel() { Id = 20, Name = "GMC", Year = 2013 },
new CarModel() { Id = 30, Name = "Subaru", Year = 2019 },
};

return sampleRecordFromDB.ToList();
});


return carModelCached;
}

but, if after I do an update/insert, I have to refetch from DB and insert back the updated data to cache.

[HttpPost]
public void Post(List<CarModel> car)
{
string key = "ALLCar-Key";

//fetch from db (removed for brevity...)

var sampleRecordFromDB = new List<CarModel>
{
new CarModel() { Id = 10, Name = "Hyundai", Year = 1998 },
new CarModel() { Id = 20, Name = "GMC", Year = 2020 }, //<<<<------UPDATED VALUE HERE
new CarModel() { Id = 30, Name = "Subaru", Year = 2019 },
};

MemoryCacheEntryOptions options = new MemoryCacheEntryOptions
{
AbsoluteExpiration = DateTime.Now.AddDays(1)
};

_cache.Set(key, sampleRecordFromDB.ToList(), options);
}

My data runs around 150K item, and doing just a simple update to one item then do the cache update is too expensive (performance wise - slow).

Is there a way that I could read from cache and do a single item update/insert from within the cache object?

Thanks,