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Component-Based Architecture

• What is a component?

A component is a modular, portable, replaceable, and reusable set of well-defined functionality that encapsulates its implementation and exporting it as a higher-level interface.

A component is a software object, intended to interact with other components, encapsulating certain functionality or a set of functionalities. It has an obviously defined interface and conforms to a recommended behavior common to all components within an architecture.

• What are the charactistics of a component?

1. Reusability − Components are usually designed to be reused in different situations in different applications.

2. Replaceable − Components may be freely substituted with other similar components.

3. Not context specific − Components are designed to operate in different environments and contexts.

4. Extensible − A component can be extended from existing components to provide new behavior.

5. Encapsulated − A A component depicts the interfaces, which allow the caller to use its functionality.

6. Independent − Components are designed to have minimal dependencies on other components.

• What are the advantages of using component based architecture?

1. Ease of deployment − As new compatible versions become available, it is easier to replace existing versions with no impact on the other components or the system as a whole.

2. Reduced cost − The use of third-party components allows you to spread the cost of development and maintenance.

3. Ease of development − Components implement well-known interfaces to provide defined functionality, allowing development without impacting other parts of the system.

4. Reusable − The use of reusable components means that they can be used to spread the development and maintenance cost across several applications or systems.

5. Modification of technical complexity − A component modifies the complexity through the use of a component container and its services.

6. Reliability − The overall system reliability increases since the reliability of each individual component enhances the reliability of the whole system via reuse.

7. System maintenance and evolution − Easy to change and update the implementation without affecting the rest of the system.

8. Independent − Independency and flexible connectivity of components. Independent development of components by different group in parallel. Productivity for the software development and future software development.

Props

• What is props short for?

“Props” is a special keyword in React, which stands for properties.

• How are props used in React?

It is used for passing data from one component to another.

• What is the flow of props?

Data with props are being passed in a uni-directional flow. (one way from parent to child).