Web Services: ○ A proxy could manage the interaction with external web services, controlling when to send requests and how to handle responses. It can also perform

dditional checks like authentication or caching.

Conclusion:

The Proxy Pattern is an excellent design pattern to control access to expensive or sensitive

objects. Whether it's controlling resource initialization (virtual proxy), managing remote

communication (remote proxy), or handling access control (protective proxy), proxies enable

efficient resource management and enhance security in an application.

Singleton Pattern: Ensuring a Single Instance

Definition:

The Singleton Pattern ensures that a class has only one instance throughout the lifetime of

n application and provides a global point of access to that instance. It's often used for

managing shared resources, like configuration settings, logging, or database connections.

Use Case:

The Singleton Pattern is useful when you need to control access to a shared resource or

configuration. For example, when managing global configuration settings or database

connections, it ensures that the configuration or connection is accessed by all parts of the

pplication via a single, consistent instance.

Code Breakdown: