Frontend, Backend, and Database
The part of the website that users interact with directly is known as the frontend. This includes everything from the layout and design to the interactive elements and content that users see and engage with on their screens. When a user performs an action, such as clicking a button or submitting a form, the data they enter is sent to the backend. The backend is the server-side part of the application, responsible for processing requests, performing logic, and managing data.
Once the backend receives the request, it communicates with the database to verify the validity of the user's request. This involves checking the data against stored records to ensure that the request is legitimate and can be processed. If the request is valid, the backend retrieves the necessary information from the database, which might include user data, product details, or other relevant content.
After processing the request, the backend sends a response back to the frontend. This response contains the outcome of the request, informing the user whether their action was successful or if there was an issue. This entire process is facilitated by an Application Programming Interface (API), which acts as a bridge between the client (frontend) and the server (backend). The API ensures smooth communication and data exchange, allowing users to interact with the website seamlessly.
A real-life example of this process:
You go to a restaurant.
You place an order with a waiter.
The waiter goes to the kitchen to tell the cook your order.
The cook prepares the food and gives it to the waiter.
The waiter brings the food to you.
Frontend: You
Backend: Kitchen
Database: Cook
API: Waiter
Request: Ordering food
Response: Receiving food