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Dynamo DB



What's New


AWS adds Global Tables feature to share data across multiple geographies i.e. multi-region and multi-master read\writes.


Hands-On Dynamo DB


Download and Run Dynamo DB


        Requires JRE > 1.6 [Install Java Ubuntu (sudo apt-get install openjdk-7-jdk)]

    b. Extract the contents of the downloaded archive and copy the extracted directory to a location of your choice.

    c. To start DynamoDB, open a command prompt window, navigate to the directory where you extracted DynamoDBLocal.jar, and enter the following command: 
        java -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -sharedDb -inMemory

    $ java -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -sharedDb -inMemory
    Initializing DynamoDB Local with the following configuration:
    Port:   8000
    InMemory:       true
    DbPath: null
    SharedDb:       true
    shouldDelayTransientStatuses:   false
    CorsParams:    *


    d. You can now start to write applications for dynamo db.


Sign up for Amazon Web Services and create access keys.

 
    You need these credentials to use AWS SDKs. 
    To create an AWS account, go to https://aws.amazon.com/, choose Create an AWS Account, and then follow the online instructions.


a. Login to aws console
b. Go to Services --> IAM --> users --> <your id> --> security credentials
c. Create access key and secret key
d. The access key and secret key be required to manage AWS resources using terraform

Create an AWS credentials file


For more information, see Configuration in the Boto 3 documentation

Alternatively, you can create the credential file yourself. 

By default, its location is at ~/.aws/credentials: 
[default] 
aws_access_key_id = YOUR_ACCESS_KEY 
aws_secret_access_key = YOUR_SECRET_KEY 

You may also want to set a default region. This can be done in the configuration file. 

By default, its location is at ~/.aws/config: 
[default] 
region=us-east-1



Install AWS boto3 python package

   
   a. Download boto3 tar
      wget https://github.com/boto/boto3/archive/1.4.4.tar.gz


   b. Install python boto3 package
      tar -xzvf boto3-1.4.4.tar.gz

      cd boto3-1.4.4
      python setup.py install

   c. For instructions, see Quickstart in the Boto 3 documentation.

       Boto3 is AWS SDK for python

       Boto3 github

       Install the latest Boto 3 release via 
       pip: pip install -U boto3 

       You may also install a specific version: 
       pip install boto3==1.0.0


Create configuration


   a. Create folder ~/.aws

   b. Create config file
    ~/.aws/config

  example
  [default]
  region=us-west-2

   c. Create credentials file
    ~/.aws/credentials

  
  example
  [default]
  aws_access_key_id = <ACCESS-ID>
  aws_secret_access_key = <SECRET_ID>


Using Boto3 with S3


To use Boto 3, you must first import it and tell it what service you are going to use:

s3.py

import boto3

# Let's use Amazon S3
s3 = boto3.resource('s3')
Now that you have an s3 resource, you can make requests and process responses from the service. The following uses the buckets collection to print out all bucket names:

# Print out bucket names
for bucket in s3.buckets.all():
    print(bucket.name)


$ python s3.py
deepagar-bucket


Using Boto3 with Dynamo DB


As you work through this tutorial, you can refer to the AWS SDK for Python (Boto) documentation at http://boto.readthedocs.org/en/latest/. The following sections are specific to DynamoDB:




References



Subpages (1): boto3
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