The principle of _______ is crucial in designing scalable and resilient web services.
- Code obfuscation
- Loose coupling
- Strong typing
- Tight coupling
The principle of loose coupling is crucial in designing scalable and resilient web services, allowing components to evolve independently.
A more secure alternative to RSA, often used in mobile web services, is _________ cryptography.
- AES (Advanced Encryption Standard)
- DES (Data Encryption Standard)
- ECC (Elliptic Curve Cryptography)
- MD5 (Message Digest Algorithm 5)
In mobile web services, ECC is often preferred for its security and efficiency compared to RSA.
Why would you want to use a Repository Pattern with an ORM?
- An ORM can handle many of the low-level details of data access, such as generating and executing SQL statements. Using the Repository pattern with an ORM allows the application to take advantage of these features, while still maintaining a clean separation of concerns between the business logic and the data access logic.
- An ORM can improve the performance of data access operations by caching frequently used data and optimizing SQL statements. Using the Repository pattern with an ORM can help to take advantage of these performance improvements.
- The Repository pattern can provide a more secure and stable data access layer by enforcing a set of rules and standards for data access, reducing the risk of data corruption or loss.
- Using the Repository pattern with an ORM provides a clean separation between the business logic and the data access logic, making the code easier to maintain and test. It also provides a centralized place to manage the persistence of data, improving the overall organization of the code.
Using the Repository pattern with an ORM provides a clean separation between the business logic and the data access logic, making the code easier to maintain and test. It also allows the application to take advantage of the low-level details of data access handled by the ORM, such as generating and executing SQL statements.
When should I use Active Record vs Repository Pattern?
- Active Record is best suited for small projects and simple data access.
- Repository Pattern is best suited for large projects or complex data access.
- Use Active Record for performance and simplicity.
- Use Repository Pattern for scalability and maintainability.
It depends on the size and complexity of the project as well as the desired level of control over data access. In general, the Repository Pattern is a better choice for large or complex projects where scalability and maintainability are important, while the Active Record pattern is better suited for small projects and simple data access.
What is Composite pattern?
- A design pattern that allows complex objects to be built up from simpler objects, through the creation of a composite object that is made up of multiple components. The pattern involves creating a common interface for both composite and leaf objects, allowing the client to treat both types of objects in a uniform manner
- A design pattern that allows objects with incompatible interfaces to work together by converting the interface of one object into an interface expected by the client
- A design pattern that creates objects by cloning existing objects, rather than creating new instances from scratch
- A design pattern that creates objects in a step-by-step manner, allowing for more control over the object creation process
Composite pattern is a design pattern that allows complex objects to be built up from simpler objects, through the creation of a composite object that is made up of multiple components. The pattern involves creating a common interface for both composite and leaf objects, allowing the client to treat both types of objects in a uniform manner. This pattern can be useful in situations where objects can be composed of other objects, and the relationship between the objects needs to be managed in a structured way.
What is the State pattern?
- A creational design pattern that provides a way to instantiate an object in a superclass, but allow subclasses to alter the type of objects that will be created.
- A design pattern used to ensure a class has only one instance, while providing a global access point to this instance for the entire system.
- A software design pattern that enables an object to be passed around as a value.
- The State pattern is a behavioral design pattern that allows an object to alter its behavior when its internal state changes. It appears as if the object changed its class.
The State pattern is a behavioral design pattern that allows an object to alter its behavior when its internal state changes. It appears as if the object changed its class.
Why would I ever use a Chain of Responsibility over a Decorator?
- The Chain of Responsibility pattern is a behavioral pattern while the Decorator pattern is a structural pattern.
- The Chain of Responsibility pattern is suited for a small number of processing steps while the Decorator pattern is suited for a large number of processing steps.
- The Chain of Responsibility pattern is used when the order of processing is important, while the Decorator pattern is used to add or override behavior.
- The Chain of Responsibility pattern passes the request sequentially through a dynamic list of receivers, while the Decorator pattern dynamically adds responsibilities to objects.
The Chain of Responsibility pattern is used when the order of processing is important, while the Decorator pattern is used to add or override behavior.
When should Prototype pattern be used?
- When objects need to be created in a step-by-step manner, allowing for more control over the object creation process
- When the cost of creating a new object is high, and it is more efficient to create a copy of an existing object
- When the number of objects in the system needs to be reduced, making it more efficient
- When the objects in the system need to be loosely coupled, making the system easier to maintain and extend
Prototype pattern should be used when the cost of creating a new object is high, and it is more efficient to create a copy of an existing object. This pattern is useful for creating a large number of similar objects, as creating a copy is faster than creating a new instance from scratch.
What is Factory pattern?
- A design pattern used to create objects in a more efficient way
- A design pattern used to manage the dependencies between objects
- A design pattern used to manage the lifecycle of objects
- A design pattern used to manage the relationships between objects
The Factory pattern is a creational design pattern used to create objects in a more efficient and centralized manner. It abstracts the process of object creation and allows the client code to be decoupled from the actual implementation of the objects being created, providing greater flexibility and maintainability in the code.
What is the purpose of the Composite Entity pattern?
- To create objects with complex behavior.
- To define a default behavior for an object.
- To manage the lifecycle of objects.
- To represent an entity that is composed of multiple objects to model a more complex entity.
The Composite Entity pattern aims to represent an entity that is composed of multiple objects to model a more complex entity, allowing the composition to be managed as a single entity.