Application Development Requirements & Landscape

Functional Requirements

• Local Authentication:

  • Implement local authentication using email and password.
  • Features include:
    • Hashed passwords
    • Email verification
    • Forgot password functionality
    • Ability to block users if necessary

• Multiple Roles (Role-Based Access Control):

  • Admin: Can manage everything, including sales data.
  • Manager: Can view sales data, inventory, and products, but cannot create anything.
  • Delivery Person: Can manage queue orders and update their status.
  • User: Can view products, read reviews, and place orders, but cannot access admin information.
  • Other Role: [Include specific role details if applicable]

• Order Management:

  • Users can place orders.
  • Users can view existing reviews and only post a review after a successful order.

• Sales Dashboard:

  • A dashboard to view sales data.

• Inventory Management:

  • Manage product inventory.

• Live Tracking of Orders:

  • Users can track the status of their orders in real-time.

Non-Functional Requirements:

• Secure: The system must ensure data protection.
• Reliable: The system must function correctly under expected conditions.
• Easy Maintainability: The system should be easy to update and maintain.
• Awesome Usability: The system should provide a great user experience.
• High Availability: Not a primary concern for the MVP.
• Scalability: Not a primary concern for the MVP.

Choose Necessary Technology

Requirements: (SRS - Software Requirement Specification)

Requirement Analysis & Design

System Design

• Architectural Decisions:

  • Monolithic (Layered)
  • Microservice
  • Serverless (FAAS - Function as a Service)

• Select Database:

  • SQL:
    • PostgreSQL (opens in a new tab)
    • MySQL (opens in a new tab)
  • NoSQL:
    • MongoDB (opens in a new tab)
    • Cassandra (opens in a new tab)
  • Key-Value:
    • Redis (opens in a new tab)
    • DynamoDB (opens in a new tab)
  • Graph Database:
    • Neo4j (opens in a new tab)
  • Search Database:
    • Elastic Search (opens in a new tab) (Open source - Full Text Search)
    • Algolia Search (opens in a new tab) (Open AI 3 - Natural Language Processing)

Software Architecture

• Object-Oriented Programming (OOP)
• OOP Design Patterns & Principles
• Data Structures & Algorithms (DSA)
• Clean Code Architecture
• Problem Solving

Testing

• Test Driven Development (TDD)
• End-to-End (E2E) Testing

Distribution

• DevOps:

  • Continuous Integration (CI):
    • Git (opens in a new tab) & GitHub (opens in a new tab)
    • Linux (opens in a new tab), SSH - Secure Shell (opens in a new tab)
    • CircleCI (opens in a new tab), Travis CI (opens in a new tab), Jenkins (opens in a new tab)
    • Docker (opens in a new tab), Docker Compose (opens in a new tab)
    • Docker Swarm (opens in a new tab), Kubernetes (opens in a new tab)
    • Prometheus (opens in a new tab), Nagios (opens in a new tab)
    • Ansible (opens in a new tab)

• Cloud Engineering:

  • VPC (Virtual Private Cloud) (opens in a new tab)
  • EC2 (Elastic Compute Cloud) (opens in a new tab)
  • S3 (Simple Storage Service) (opens in a new tab)
  • RDS (Relational Database Service) (opens in a new tab)
  • DynamoDB (opens in a new tab)
  • Route 53 (opens in a new tab)
  • CloudFront (CDN) (opens in a new tab)
  • SES (Simple Email Service) (opens in a new tab)
  • SNS (Simple Notification Service) (opens in a new tab)
  • SQS (Simple Queue Service) (opens in a new tab)
  • API Gateway (opens in a new tab)
  • Lambda (opens in a new tab)
  • Step Functions (opens in a new tab)
  • CloudWatch (opens in a new tab)
  • CloudFormation (opens in a new tab), Terraform (opens in a new tab), CDK (opens in a new tab)

Development Steps:

1. Requirements
2. Design
3. Implementation:
   • UI/UX Design
   • Web Design
   • Frontend Development
   • Backend Development
   • Test Code
4. Testing, Deployment
5. Maintenance