webrgp / ucd-capstone-project

Udacity Cloud Developer Capstone Project

PhotoWall - Udacity Cloud Developer Capstone Project

Serverless picture organizer application where a user can manage pictures and captions.

Functionality

• The application allows users to create, update, delete picture items.
• The application allows users to upload a picture.
• The application only displays pictures for a logged in user.
• A user needs to authenticate in order to use an application (Auth0)

Codebase

• The code is split into multiple layers separating business logic from I/O related code.
• Code is implemented using async/await and Promises without using callbacks.

Best Pratices

• All resources in the application are defined in the serverless.yml file.
• Each function has its own set of permissions.
• Application has sufficient monitoring.
• HTTP requests are validated.

Architecture

• Data is stored in a table with a composite key.

KeySchema:
      - AttributeName: partitionKey
        KeyType: HASH
      - AttributeName: sortKey
        KeyType: RANGE

• items are fetched using the query() method and not scan() method (which is less efficient on large datasets)

How to run the application

Backend

The backend is already deployed to Amazon Web Services. You can directly run the client. But if you want to deploy your own, you can run the code below.

cd backend
npm install
sls deploy -v

Client

The application UI is built using GatsbyJS. To start the client application run the following commands:

cd client
npm install
npm run start