AWS Serverless Microservices with Patterns and Best Practices - Developing Ordering Lambda Microservice Sync Invocation

The video tutorial covers the development of synchronous invocations using Amazon API Gateway and DynamoDB in microservices. It explains the implementation of switch statements and try-catch blocks to handle HTTP methods and exceptions. The tutorial also guides on writing method signatures for order retrieval, focusing on handling API requests and responses effectively.

What is the primary purpose of using switch statements in the Lambda function?

• To handle different types of HTTP methods

• To manage database connections

• To optimize memory usage

• To log error messages

What is the role of the Amazon API Gateway in this setup?

• To manage user authentication

• To facilitate synchronous invocations of Lambda functions

• To provide a user interface for the application

• To store data in DynamoDB

Why is it important to use a try-catch block in the Lambda function?

• To enhance the performance of the function

• To increase the security of the application

• To handle exceptions and return appropriate responses

• To reduce the size of the code

Which HTTP methods are primarily discussed in the context of the Lambda function?

• POST and PUT

• GET and POST

• GET and DELETE

• PUT and DELETE

How does the Lambda function differentiate between requests for all orders and those filtered by username?

• By analyzing the request headers

• By evaluating the request body

• By examining the path parameters

• By checking the HTTP method

What is the consequence of not returning a status code in the Lambda function?

• The function will run indefinitely

• The API Gateway will return an internal server error

• The request will be redirected to another endpoint

• The function will not execute

What is the significance of verifying API methods in the Lambda function?

• To confirm that all expected methods are correctly implemented

• To improve the readability of the code

• To ensure compatibility with different browsers

• To reduce the load on the server