Python and DAX

To run the Python sample for DAX

1. Install the DAX Python client using the pip utility.

   pip install amazon-dax-client

2. Download the sample program source code (.zip file).

   wget http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/samples/TryDax.zip

   When the download is complete, extract the source files.

   unzip TryDax.zip

3. Run the following Python programs. The first program creates an Amazon DynamoDB table named TryDaxTable. The second program writes data to the table.

   python 01-create-table.py
   python 02-write-data.py

4. Run the following Python programs.

   python 03-getitem-test.py
   python 04-query-test.py
   python 05-scan-test.py

   Take note of the timing information—the number of milliseconds required for the GetItem, Query, and Scan tests.

5. In the previous step, you ran the programs against the DynamoDB endpoint. Now run the programs again, but this time, the GetItem, Query, and Scan operations are processed by your DAX cluster.

   To determine the endpoint for your DAX cluster, choose one of the following:

   • Using the DynamoDB console — Choose your DAX cluster. The cluster endpoint is shown on the console, as in the following example.

     dax://my-cluster.l6fzcv.dax-clusters.us-east-1.amazonaws.com

   • Using the Amazon CLI — Enter the following command.

     aws dax describe-clusters --query "Clusters[*].ClusterDiscoveryEndpoint"

     The cluster endpoint is shown in the output, as in this example.

     {
         "Address": "my-cluster.l6fzcv.dax-clusters.us-east-1.amazonaws.com",
         "Port": 8111,
         "URL": "dax://my-cluster.l6fzcv.dax-clusters.us-east-1.amazonaws.com"
     }

   Run the programs again, but this time, specify the cluster endpoint as a command line parameter.

   python 03-getitem-test.py dax://my-cluster.l6fzcv.dax-clusters.us-east-1.amazonaws.com
   python 04-query-test.py dax://my-cluster.l6fzcv.dax-clusters.us-east-1.amazonaws.com
   python 05-scan-test.py dax://my-cluster.l6fzcv.dax-clusters.us-east-1.amazonaws.com

   Look at the rest of the output, and take note of the timing information. The elapsed times for GetItem, Query, and Scan should be significantly lower with DAX than with DynamoDB.

6. Run the following Python program to delete TryDaxTable.

   python 06-delete-table.py