AWS Serverless Microservices with Patterns and Best Practices - Developing DynamoDB Query and Scan Operations for Produc

This video tutorial covers the development of AWS Lambda microservices using DynamoDB. It explains the implementation of various HTTP methods, focusing on expanding the GET method to include category-based queries. The tutorial includes refactoring code, implementing query commands, and developing a function to retrieve products by category. It also discusses best practices and examples from the AWS developer guide.

What is the purpose of adding a new GET method in the AWS Lambda microservices?

• To delete products by category

• To update product details

• To create new product entries

• To query products by category

What is the first step in refactoring the code to handle query parameters?

• Check for existing query parameters

• Delete existing query parameters

• Add new path parameters

• Check for null path parameters

Which command is considered costly and should be avoided if possible?

• Delete command

• Scan command

• Update command

• Query command

What is the key condition expression used for in a query command?

• To set the projection expression

• To filter results by category

• To specify the table name

• To define the partition key

What is the main advantage of using a query command over a scan command?

• It allows for data deletion

• It is faster and more efficient

• It creates new tables

• It updates existing records

What is the purpose of unmarshalling items in the 'get products by category' function?

• To update the database

• To convert data types to JSON objects

• To encrypt the data

• To delete unwanted data

Which AWS service is used to create the infrastructure for the product microservices?

• Amazon S3

• AWS CloudFormation

• AWS CDK

• AWS Lambda

What is the role of the API Gateway in the microservices architecture?

• To manage user authentication

• To store data

• To handle HTTP requests

• To process payments

Which programming language is used for the Lambda functions in this project?

• Python

• Java

• Node.js

• C#

What is the next step after developing the microservices in the video?

• Deleting the services

• Deploying the services

• Updating the services

• Testing the services