AWS DynamoDB using CreateBatchWrite

Question

Using .net core c# dynamo db

I was using the following method to save to my dynamo db:

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

And then in my controller I call the above as:

foreach (var data in myData)
{
   //update data
  await _dynamoDbManager.SaveAsync(data);
}

The above works fine but instead of saving individually I want to save at one using batch.

I dont know how I can write a similar Batch method. I tried with below:

public Task CreateBatch()
{
   //The below is not correct as I dont know what to pass as <T> in below call.
   return CreateBatchWrite<T>(_config);
}

I want to create the above method so that I can use it as below in my controller:

var batchWriter =  CreateBatch();
foreach (var data in myData)
{
   //update data
}
batchWriter.AddPutItems(myData);
await batchWriter.ExecuteAsync();

Can anyone help in writing my CreateBatchWrite method.

aman · Accepted Answer · 2019-01-14 14:30:20Z

1

You could create method as:

public BatchWrite<T> CreateBatch<T>()
{
   return CreateBatchWrite<T>(_config);
}

And then call this in your controller as:

var batchWriter =  CreateBatch<MyData>();
batchWriter.AddPutItems(myData);
await batchWriter.ExecuteAsync();

answered Jan 14, 2019 at 14:30

aman

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