Environment Variables and Layers
Manage configuration and dependencies effectively using environment variables and Lambda Layers for shared code.
Configuring Lambda Functions
When building serverless applications, you often need to configure your Lambda functions. This includes settings that change between development, testing, and production environments.
Think about database connection strings, API endpoints, or feature flags. Hardcoding these values is a bad practice!
What are Environment Variables?
Environment variables are key-value pairs that you define for your Lambda function. Your function's code can then access these variables at runtime.
- They provide a simple way to change your function's behavior without modifying its code.
- Each function has its own set of environment variables.
All lessons in this course
- Lambda Runtime and Handler
- Environment Variables and Layers
- Logging and Monitoring with CloudWatch
- Error Handling, Retries & Dead-Letter Queues