Serverless Journal App

Serverless journal application where a user can pen down their thoughts, feelings and inspired images.

Functionality

• The application allows users to create, update, delete diary items.
• The application allows users to upload a file.
• The application only displays items/Diaries for a logged in user.
• A user needs to authenticate in order to use an application

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

To deploy an application run the following commands:

cd backend
npm install
npx serverless deploy -v

Client

To run a client application first edit the client/src/config.ts file to set correct parameters. And then run the following commands:

cd client
npm install
npm run start