DynamoDB .NET - Delete all items from a table

Question

I'm learning how to work with DynamoDB for .net and I have a doubt, Is there a correct way to delete all items from an existing table?, I mean, I don't want to delete the table, just empty it. I've read about batch process but they don't help me much.

I have this

private string DeleteAllFromTable()
    {
        string result = string.Empty;

        try
        {

            var request = new BatchWriteItemRequest
            {
                RequestItems = new Dictionary<string, List<WriteRequest>> 
                { 
                    {
                        this.Tablename, new List<WriteRequest>
                        {
                            new WriteRequest
                            {
                                DeleteRequest = new DeleteRequest
                                {
                                    Key = new Dictionary<string,AttributeValue>()
                                    {
                                        { "Id", new AttributeValue { S = "a" } }
                                    }
                                }
                            }
                        }
                    }
                }
            };

            var response = this.DynamoDBClient.BatchWriteItem(request);

        }
        catch (AmazonDynamoDBException e)
        {

        }


        return result;
    }

But of course, that only delete the id that match with the value "a".

Thanks.

Answer 1

I would recommend that you just delete the table and recreate it. From the DynamoDB Guidelines for Working with Tables documentation :

...

Deleting an entire table is significantly more efficient than removing items one-by-one, which essentially doubles the write throughput as you do as many delete operations as put operations.

Answer 2

删除表并使用索引重新创建它可能会导致应用程序出现故障，因为删除/创建表通常需要很多时间，从而导致资源处于删除状态错误