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API Lambda DynamoDB

Use Case

In this exercise, you'll create a serverless API that allows users to submit and retrieve news. The application will be built using AWS services such as API Gateway, Lambda, and DynamoDB.

Overview

The application provides an endpoint where users can submit a new with a title and content. The new is then stored in a DynamoDB table. Another endpoint allows users to retrieve a new by its unique ID.

Components

  1. API Gateway:

    • Provides a RESTful API interface for clients to interact with the service.
    • Handles HTTP requests and routes them to the appropriate Lambda function.

  2. Lambda Function:

    • Serves as the backend logic for processing incoming API requests.
    • Handles the creation and retrieval of news.
    • Interacts with DynamoDB to save and fetch data.

  3. DynamoDB:

    • Stores the news with attributes such as NewID, Title, Content, and Timestamp.
    • Provides fast and scalable data storage.

Endpoints

  1. POST /news:

    • Description: Creates a new new.
    • Request Body: JSON object with title and content fields.
    • Response: A JSON object with the NewID of the newly created new.

  2. GET /news/{id}:

    • Description: Retrieves a new by its NewID.
    • Path Parameter: id - The unique identifier of the new.
    • Response: A JSON object with NewID, title, content, and timestamp.