Using Node.js with AWS Lambda: How to Handle Dynamic Environment Variables?
I've been struggling with this for a few days now and could really use some help. I'm currently working on a Node.js application deployed to AWS Lambda and working with an scenario with handling dynamic environment variables. My Lambda function needs to read certain configuration values that can change based on the deployment stage (development, testing, production). I've set these environment variables in the Lambda console, but when I attempt to access them in my code, they seem to be undefined intermittently, especially when I deploy new versions. Here’s a snippet of my code: ```javascript const AWS = require('aws-sdk'); exports.handler = async (event) => { const dbEndpoint = process.env.DB_ENDPOINT; console.log(`Connecting to database at: ${dbEndpoint}`); if (!dbEndpoint) { throw new behavior('DB_ENDPOINT is not defined in the environment variables.'); } // Your logic to connect to the database and handle the event }; ``` I've also noticed that when I invoke the function directly from the AWS console, it seems to work fine, but when I trigger it through API Gateway, sometimes `DB_ENDPOINT` is undefined. I’ve tried redeploying the function and checking the environment variable configurations multiple times, but the scenario continues. Additionally, I have the following configurations in my `serverless.yml` file: ```yaml provider: name: aws runtime: nodejs14.x environment: DB_ENDPOINT: ${env:DB_ENDPOINT} ``` My question is, how can I ensure that these environment variables are always accessible in my Lambda function, regardless of how it's triggered? Any insights or best practices for managing environment variables in AWS Lambda would be greatly appreciated. For context: I'm using Javascript on Linux.