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Environment Variables In Lambda Function

In this article, we will use environment variables in the lambda function.

What Are Environment Variables?

An environment variable is the key-value pair
An environment variable can be set from outside the application
PATH is an example of an environment variable

Steps

In this article, we will work on the following steps: -

Create a lambda function
Add an environment variable in the lambda function
Use the environment variable in the code

Let us get started.

Create A Lambda Function

First, create a lambda function. Use this link to create the lambda function.

Add An Environment Variable In The Lambda Function

To create an environment variable, click on the function to go to the detail screen. In the details screen, click on the Configuration link.

Picture showing the Environment variable tab in the lambda function

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In the Environment variable, click on the Edit button. A screen will appear to add the environment variables. Click on the Add environment variable button.

Picture showing the Environment variable section in edit mode

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A field will appear to enter the key-value pair. Enter the key-value pair and click on the Save button.

Picture showing adding the Environment variable in lambda function

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Use The Environment Variable In The Code

For using the environment variable in the code, use the following syntax.

process.env.<ENVIRONMENT_VARIABLE>

Picture showing using the Environment variable inside the code in the lambda function

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Posted By -	Karan Gupta

Posted On -	Tuesday, January 18, 2022

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