.Net AWS DynamoDB Updating items

Question

I am using dynamodb object persistence model with .net core c#.

I am using the following to save my data:

public Task SaveAsync(T item)
{
   return base.SaveAsync(item, _config);
}

While this works fine. I wanted to know how can I update items instead of saving. What I have is that I need to delete the item, and then call save again. Is it possible to overwrite the item instead of deleting and resaving.

For ex I have an item with key as my guid , when I call save I have to first delete this item and then insert another entry with a different guid.

Any update which is available with dynamo db?

Anyone?

Answer 1

How are you retrieving the item? are you getting it via the dbcontext? or dbClient?

When using the Object Persistance model , you should just save the item. the framework will take care of the update in the background. My assumption/guess is that you are loading the data outside of the dbcontext. So when you go to save it, it assumes you want to create a new item.