Dynamo DB
What's New
Amazon DynamoDB Update – Global Tables and On-Demand Backup
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:
Working with Items in DynamoDB
References