AWS Serverless Microservices with Patterns and Best Practices - Developing Product Lambda Microservice with DynamoDB Cli

The video tutorial covers the use of DynamoDB client SDK for JavaScript in microservices, focusing on best practices for establishing and using the client. It explains creating a Node.js module for DynamoDB, developing business logic in Lambda functions, and handling events from API Gateway. The tutorial emphasizes reducing execution time and costs by managing database connections efficiently.

What is the primary focus of the AWS developer guide mentioned in the video?

• Setting up AWS EC2 instances

• Understanding CRUD operations with DynamoDB

• Configuring AWS S3 buckets

• Deploying AWS Lambda functions

Why is it recommended to create database connections outside the Lambda handler method?

• To reduce execution time and costs

• To increase the number of API calls

• To allow multiple database connections

• To improve database security

What is the first step in setting up the DynamoDB client module?

• Configuring API Gateway

• Writing the Lambda function code

• Importing the required SDK package

• Creating a new AWS account

How does the API Gateway trigger the Lambda function?

• By modifying IAM roles

• By uploading files to S3

• By executing SQL queries

• By sending HTTP requests

What should be done when an API Gateway event with a POST request is received?

• Send a DynamoDB DeleteItem command

• Send a DynamoDB GetItem command

• Send a DynamoDB PutItem command

• Send a DynamoDB UpdateItem command

Which AWS service is used to expose APIs for the product microservices?

• AWS CloudFront

• AWS S3

• AWS EC2

• AWS API Gateway

What is the purpose of using a switch statement in the Lambda function?

• To deploy the Lambda function

• To configure API Gateway settings

• To manage database connections

• To handle different HTTP methods