AWS Lambda: A Beginner's Guide
AWS Lambda is a serverless computing service that lets you run code without provisioning or managing servers. You write a function, configure a trigger, and AWS runs your code when needed.
Key Concepts
- Function: Your code that performs a specific task.
- Trigger: An event that invokes your function, such as an HTTP request or an S3 upload.
- Runtime: The programming language environment, such as Node.js, Python, or Java.
- Execution Role: IAM permissions that determine which AWS services your function can access.
- CloudWatch: Used to inspect execution logs and monitor errors.
Beginner Project: Create a Node.js Lambda function that returns a message, then connect it to API Gateway to expose it through an HTTP endpoint.
Resources
- Documentation: https://docs.aws.amazon.com/lambda/
- Getting started: https://aws.amazon.com/lambda/getting-started/
Start with a simple function, test it in the AWS Console, and then learn how to invoke it using events and APIs.
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