Communication_Methods_Cloud_Kitchen.pptx

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1. Communication Methods in a Cloud Kitchen System A detailed overview of various communication methods and their representations in a Data Flow Diagram (DFD)

2. HTTP/HTTPS (Web Communication) - Use: Communication between the user's browser and the web server. - DFD Representation: Arrows from the user to the web server and back, indicating requests (GET, POST) and responses. - Security: HTTPS should be used to encrypt data, ensuring secure communication.

3. AJAX (Asynchronous JavaScript and XML) - Use: For dynamic, asynchronous communication between the client and server without reloading the entire web page. - DFD Representation: Indicate AJAX calls for operations like fetching menu items, updating order status, etc. - Security: Same as HTTP/HTTPS, ensure these requests are encrypted.

4. WebSockets - Use: Real-time communication, useful for instant updates like order status changes. - DFD Representation: A bidirectional arrow between the client and server, indicating continuous communication. - Security: Secure WebSocket (wss://) should be used for encryption.

5. APIs (Application Programming Interfaces) - Use: Interaction between different parts of the system or with external services (e.g., payment gateways, third-party delivery services). - DFD Representation: Arrows indicating API calls to and from external services. - Security: Ensure API requests and responses are encrypted and authenticated.

6. Database Communication (SQL/NoSQL) - Use: Interaction between the application server and the database. - DFD Representation: Arrows between the server processes (PHP scripts) and the database, showing queries and results. - Security: Use secure connections (SSL/TLS) for database interactions, especially for sensitive data.

7. Email and SMS - Use: For notifications, confirmations, and alerts (e.g., order confirmation, delivery updates). - DFD Representation: Arrows from server processes to email/SMS services. - Security: Ensure that sensitive information is not sent through unsecured channels; use encryption where possible.

8. Push Notifications - Use: Sending real-time updates to users via their web browsers or mobile devices. - DFD Representation: Arrows indicating communication from the server to the user's device for push notifications. - Security: Use secure channels and ensure proper user authentication for sensitive updates.

9. Inter-Process Communication (IPC) - Use: Communication between different processes within the server (e.g., microservices). - DFD Representation: Arrows between server-side components or microservices. - Security: Secure the communication channels within the server infrastructure.