Client-Server Architecture

 Definition: Client-Server Architecture is a network architecture where multiple clients (users) request and receive services from a centralized server. The server hosts, manages, and delivers resources or services to clients over a network.

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Key Components:

• Client:

  • A device or software application that requests services or resources from the server.

  • Examples: Web browsers, mobile apps, desktop apps.

• Server:

  • A powerful system or software that provides services or resources to clients.

  • Examples: Web servers, database servers, file servers.

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Diagram:

          +-----------+         Request         +-----------+
          |           | ---------------------> |           |
          |  Client   |                        |   Server  |
          | (Browser) | <--------------------- | (Web/App) |
          +-----------+        Response        +-----------+
                |                                     |
          +-----------+                        +-----------+
          |  Client   |                        | Database  |
          | (Mobile)  |                        |  Server   |
          +-----------+                        +-----------+

You can imagine:

• Clients send requests to the server (like asking for a webpage).

• Server processes the request and sends a response back (like returning the webpage).

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Advantages:

• Centralized control.

• Easier maintenance and security.

• Scalability (add more clients easily).

Disadvantages:

• Server bottlenecks if overloaded.

• Single point of failure (if server goes down).

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