Which design pattern should we use when more than one object can handle the request and handler is not known prior?

Which design pattern should we use when more than one object can handle the request and handler is not known prior?

Responsibility of Chain: When to Use It When there is more than one object that can handle a request, and it happens that the handler is not known a priori.

What is Handler design pattern?

The handler pattern abstracts a business process into some action being carried out in response to a request. This abstraction works well when the client should not have to know about the specific implementation of the handler and the action cannot be better represented by a more explicit interface.

Which design pattern should you use when you want to avoid a permanent binding?

Use of Bridge Pattern You should use the Bridge Pattern when: You want to avoid a permanent binding between an abstraction and its implementation.

Which type of loading is good in which scenario?

Eager loading is beneficial when there is an opportunity or need to load resources in the background. For example, some websites display a “loading” screen and eagerly load all the resources required for the web application to run.

What is lazy loading pattern?

Lazy loading (also known as asynchronous loading) is a design pattern commonly used in computer programming and mostly in web design and development to defer initialization of an object until the point at which it is needed. It can contribute to efficiency in the program’s operation if properly and appropriately used.

Which design pattern should you use when you want to parameterize?

Summary. As you can see, the Command Pattern is well suited for the following situations: You want to be able to parameterize objects by an action to perform. You need to specify, queue, and execute requests at different times.

What is the purpose of the Singleton pattern select the two correct answers?

The correct answer is A. The Singleton pattern ensures that no more than one instance of the class exists ever. It does not allow one instance of the Singleton to be destroyed and then another one created. In general, a Singleton has nothing to do with separating objects in different classes.

How does the chain of responsibility pattern work?

This structural code demonstrates the Chain of Responsibility pattern in which several linked objects (the Chain) are offered the opportunity to respond to a request or hand it off to the object next in line.

What is the chain of responsibility in C #?

The classes and objects participating in this pattern are: Structural code in C#. This structural code demonstrates the Chain of Responsibility pattern in which several linked objects (the Chain) are offered the opportunity to respond to a request or hand it off to the object next in line.

How are handlers handled in a chain of responsibility?

Each of the handlers in the chain takes its turn at trying to handle the request it receives from the client. If ConcreteHandler1 can handle it, then the request is handled, if not it is sent to the handler ConcreteHandler2, the next one in the chain.

How to reduce coupling degree in chain of responsibility?

If ConcreteHandler1 can handle it, then the request is handled, if not it is sent to the handler ConcreteHandler2, the next one in the chain. To reduce the coupling degree.