Implementing Photo Sharing Schema in CDK Typescript

PhotoSharingStack.ts

import * as cdk from '@aws-cdk/core';
import * as ddb from '@aws-cdk/aws-dynamodb';

const TABLE_NAME = 'PhotoSharing';

export class PhotoSharingStack extends cdk.Stack {
  constructor(scope: cdk.Construct, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    const table = new ddb.Table(this, TABLE_NAME, {
      partitionKey: {
        name: 'userId',
        type: ddb.AttributeType.STRING,
      },
      // Optional sort key for improved querying
      sortKey: {
        name: 'timestamp',
        type: ddb.AttributeType.NUMBER,
      },
    });

    // Define attributes for each entity
    table.addGlobalSecondaryIndex({
      indexName: 'PhotoIndex',
      partitionKey: {
        name: 'userId',
        type: ddb.AttributeType.STRING,
      },
      sortKey: {
        name: 'photoId',
        type: ddb.AttributeType.STRING,
      },
    });

    // Example item creation functions (modify based on your needs)
    function createUser(userId: string, username: string, email: string) {
      const item = {
        userId,
        username,
        email,
        // ...other user attributes
      };
      table.putItem(item);
    }

    function createPhoto(userId: string, photoId: string, imageURL: string, caption: string) {
      const item = {
        userId,
        photoId,
        imageURL,
        caption,
        // ...other photo attributes
      };
      table.putItem(item);
    }

    // ... similar functions for comments, likes, and follows
  }
}