AWS Serverless - Core Building Blocks

Introduction

AWS Serverless architecture allows developers to build and run applications without managing servers. This lesson covers the fundamental building blocks necessary to understand and implement AWS Serverless solutions.

Key Concepts

Core Services

                const AWS = require('aws-sdk');
                exports.handler = async (event) => {
                    console.log("Event: ", event);
                    const response = {
                        statusCode: 200,
                        body: JSON.stringify('Hello from Lambda!'),
                    };
                    return response;
                };
                

Best Practices

• Keep functions small and focused on a single task.
• Monitor and log application performance and errors using AWS CloudWatch.
• Implement security best practices using IAM roles and policies.
• Optimize Lambda cold start times by keeping function size minimal.

Step-by-Step Flowchart

        graph TD;
            A[Start] --> B{Is Event Received?};
            B -->|Yes| C[Invoke Lambda Function];
            B -->|No| D[Wait for Event];
            C --> E[Process Event];
            E --> F[Store Results in DynamoDB];
            D --> B;
        

FAQ