Architecture

Architecture

Overview

The application is built using a modular architecture, separating concerns into different packages and directories. The main components include the blockchain logic, HTTP handlers, routing, and HTML rendering.

Components

blockchain/

• Purpose: Contains the core logic for the blockchain implementation.
• File: blockchain.go - Implements blockchain functionalities such as initialization and data loading.

internals/

• Purpose: Houses internal packages that include handlers, renders, and routes.
• Subdirectories:
  • handlers/: Contains HTTP handlers.
    • File: handlers.go - Defines handlers for different HTTP endpoints.
  • renders/: Manages rendering of HTML templates.
    • File: render.go - Contains logic for rendering HTML templates.
  • routes/: Registers and manages HTTP routes.
    • File: routes.go - Defines and registers application routes and middleware.

views/

• Purpose: Holds static assets (CSS) and HTML templates.
• Subdirectories:
  • static/: Contains CSS files for styling the web pages.
    • Files: Various CSS files like 400.css, 404.css, 500.css, etc., each providing styles for specific pages.
  • templates/: Contains HTML templates for different pages.
    • Files: Templates like 400.page.html, 404.page.html, 500.page.html, etc., each defining the structure of specific web pages.

web/

• Purpose: Contains the main application logic and temporary files.
• Subdirectories:
  • tmp/: Used for temporary files.
  • main.go: The entry point of the application that initializes and starts the server.

Project Root Files

• .air.toml: Configuration file for the Air live reload tool.
• .gitignore: Specifies which files and directories to ignore in Git.
• data.json: JSON file containing initial data for the blockchain.
• go.mod: Go module file that defines the module path and dependencies.
• go.sum: Checksums for the dependencies.
• README.md: Documentation file providing an overview of the project.

Data Flow

1. Initialization:

   • The blockchain is initialized and data is loaded from data.json.

2. Request Handling:

   • HTTP requests are routed to appropriate handlers defined in internals/handlers/handlers.go.

3. Response Generation:

   • Handlers interact with the blockchain logic and render appropriate HTML templates or JSON responses.

Technologies

• Programming Language: Go
• Web Framework: net/http
• Blockchain Library: Custom implementation (github.com/kh3rld/biasharaid/blockchain)

Deployment

1. Development:

   • Local setup using Go tools and Air for live reloading.

2. Staging:

   • Deployed on a staging server for testing.

3. Production:

   • Deployed on a production server with load balancing and scaling mechanisms.

Scalability

• Horizontal Scaling: Adding more instances of the application behind a load balancer.
• Vertical Scaling: Enhancing the capabilities of the existing server.

Security

• Authentication: Bearer token authentication for API endpoints.
• Authorization: Role-based access control.
• Data Protection: Encryption of sensitive data at rest and in transit.

Error Handling

• Logging: Errors are logged with detailed stack traces.
• Monitoring: Application performance and errors are monitored using tools like Prometheus and Grafana.

Performance

• Optimization Techniques: Efficient data structures and algorithms ensure fast processing.
• Benchmarking: Regular performance tests to identify and resolve bottlenecks.