How to use limits in dynamodb?

@orpha 

In DynamoDB, limits can be used to control the number of items or operations that can be performed in a single request. This can help prevent a single query or scan from consuming too many resources and affecting the performance of the database.

Here are some common ways to use limits in DynamoDB:

1. Limit the number of items returned in a query or scan operation by specifying the Limit parameter. This will restrict the number of items that are returned in the response to the specified value.
2. Use the BatchGetItem operation to retrieve multiple items in a single request, with a limit on the total number of items that can be retrieved in one operation.
3. Set limits on the number of write operations that can be performed in a single request using the BatchWriteItem operation. This can help prevent a single write operation from overloading the database.
4. Use the ThrottlingException error to handle limits on the number of read or write operations that can be performed within a certain time period. When this error occurs, you can implement retry logic to handle the limit exceeded condition.

Overall, limits in DynamoDB can be used to optimize performance, control resource consumption, and prevent excessive usage of database resources. By setting appropriate limits and handling limit exceeded conditions, you can ensure the efficient operation of your DynamoDB tables.