Lessons

How to Use AWS CLI to Create a DynamoDB Table with Global Secondary Index

Introduction

In this lesson, we will learn how to use AWS CLI to create a DynamoDB table with Global Secondary Index (GSI). We will cover the basics of DynamoDB and GSI, and then we will look at how to use AWS CLI to create a DynamoDB table with GSI. We will also look at some examples of how to use AWS CLI to create a DynamoDB table with GSI.

What is DynamoDB?

DynamoDB is a fully managed NoSQL database service provided by Amazon Web Services (AWS). It is a fast and flexible database that can be used to store and retrieve data from any application. DynamoDB is designed to be highly available, scalable, and secure. It is also designed to be cost-effective and easy to use.

What is Global Secondary Index (GSI)?

Global Secondary Index (GSI) is a feature of DynamoDB that allows you to create an index on any attribute of a table. This index can be used to quickly query the table for specific data. GSI can be used to improve the performance of queries and to reduce the cost of data retrieval.

How to Use AWS CLI to Create a DynamoDB Table with GSI

In this section, we will look at how to use AWS CLI to create a DynamoDB table with GSI. We will use the AWS CLI command aws dynamodb create-table to create a DynamoDB table with GSI.

Step 1: Create a Table

The first step is to create a table. To do this, we will use the aws dynamodb create-table command. This command takes a JSON file as an argument that contains the table definition. The table definition includes the table name, the primary key, and any global secondary indexes.

Step 2: Create a Global Secondary Index

The next step is to create a global secondary index. To do this, we will use the aws dynamodb create-global-secondary-index command. This command takes a JSON file as an argument that contains the index definition. The index definition includes the index name, the index key, and any other attributes that should be included in the index.

Step 3: Update the Table

The final step is to update the table. To do this, we will use the aws dynamodb update-table command. This command takes a JSON file as an argument that contains the table definition. The table definition includes the table name, the primary key, and any global secondary indexes.

Examples

In this section, we will look at some examples of how to use AWS CLI to create a DynamoDB table with GSI.

Example 1: Create a Table with a GSI

The following example shows how to use AWS CLI to create a DynamoDB table with a GSI. The table name is myTable, the primary key is id, and the GSI is name.

aws dynamodb create-table \
  --table-name myTable \
  --attribute-definitions \
    AttributeName=id,AttributeType=S \
    AttributeName=name,AttributeType=S \
  --key-schema \
    AttributeName=id,KeyType=HASH \
  --global-secondary-indexes \
    IndexName=name-index,KeySchema=["{AttributeName=name,KeyType=HASH}"],Projection="{ProjectionType=ALL}"

Example 2: Create a Table with Multiple GSIs

The following example shows how to use AWS CLI to create a DynamoDB table with multiple GSIs. The table name is myTable, the primary key is id, and the GSIs are name and age.

aws dynamodb create-table \
  --table-name myTable \
  --attribute-definitions \
    AttributeName=id,AttributeType=S \
    AttributeName=name,AttributeType=S \
    AttributeName=age,AttributeType=N \
  --key-schema \
    AttributeName=id,KeyType=HASH \
  --global-secondary-indexes \
    IndexName=name-index,KeySchema=["{AttributeName=name,KeyType=HASH}"],Projection="{ProjectionType=ALL}" \
    IndexName=age-index,KeySchema=["{AttributeName=age,KeyType=HASH}"],Projection="{ProjectionType=ALL}"

Conclusion

In this lesson, we learned how to use AWS CLI to create a DynamoDB table with Global Secondary Index (GSI). We covered the basics of DynamoDB and GSI, and then we looked at how to use AWS CLI to create a DynamoDB table with GSI. We also looked at some examples of how to use AWS CLI to create a DynamoDB table with GSI.

The key learnings from this lesson are:

  • DynamoDB is a fully managed NoSQL database service provided by Amazon Web Services (AWS).
  • Global Secondary Index (GSI) is a feature of DynamoDB that allows you to create an index on any attribute of a table.
  • We can use the AWS CLI command aws dynamodb create-table to create a DynamoDB table with GSI.
  • We can use the AWS CLI command aws dynamodb create-global-secondary-index to create a global secondary index.
  • We can use the AWS CLI command aws dynamodb update-table to update the table.
Share :