Table of Contents
Which is the design pattern that can be used to deal with database operation in hibernate?
Hibernate ORM stands for Object Relational Mapping. This is a mapping tool pattern mainly used for converting data stored in a relational database to an object used in object-oriented programming constructs.
Which design pattern is used in log4j?
It is using a mixture of design pattern, is using Singleton and Chain of responsibilities patterns.
Which design pattern is used in Spring MVC?
A Spring MVC is a Java framework which is used to build web applications. It follows the Model-View-Controller design pattern.
What are the design patterns used in Microservices?
Design Patterns of Microservices
- Aggregator.
- API Gateway.
- Chained or Chain of Responsibility.
- Asynchronous Messaging.
- Database or Shared Data.
- Event Sourcing.
- Branch.
- Command Query Responsibility Segregator.
What is factory design pattern in Java?
The factory design pattern says that define an interface ( A java interface or an abstract class) and let the subclasses decide which object to instantiate. The factory method in the interface lets a class defer the instantiation to one or more concrete subclasses.
What is the design pattern used in logging?
Observer Pattern is well suited for logging framework. You can have Logger class extending Observable, and child classes like log to console, log to Database and log to File system etc and each child class implements Observer.
What is Appender in log4j?
Appenders. Apache log4j provides Appender objects which are primarily responsible for printing logging messages to different destinations such as consoles, files, sockets, NT event logs, etc. Each Appender object has different properties associated with it, and these properties indicate the behavior of that object.
What is the design pattern used in spring IOC?
Singleton Design Pattern
Singleton Design Pattern: Singleton design pattern ensures that there will exist only the single instance of the object in the memory that could provide services. In the spring framework, the Singleton is the default scope and the IOC container creates exactly one instance of the object per spring IOC container.