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1.
What is Dependency Injection and why is it used in modern software development?
Answer:
DI Fundamentals
- 2.
Explain the concept of Inversion of Control (IoC) and how it relates to Dependency Injection.
Answer: - 3.
What are the main advantages of using Dependency Injection in a software project?
Answer: - 4.
Describe the impact of Dependency Injection on the maintainability of code.
Answer: - 5.
Can you explain the Dependency Inversion Principle and how it differs from Dependency Injection?
Answer:
Types of Dependency Injection
- 6.
Compare and contrast constructor injection versus setter injection.
Answer: - 7.
When would you use method injection instead of constructor injection?
Answer: - 8.
Can mixing different types of injection in the same class lead to issues? If so, what kind?
Answer: - 9.
Is there a preferred type of dependency injection when working with immutable objects? Please explain.
Answer: - 10.
How does each type of dependency injection affect the ease of unit testing?
Answer:
DI Containers and Frameworks
- 11.
What is a Dependency Injection container and what are its responsibilities?
Answer: - 12.
Can you list some popular Dependency Injection frameworks and their distinctive features?
Answer: - 13.
What is the difference between a Dependency Injection container and a service locator?
Answer: - 14.
How do you configure dependencies within a DI container typically?
Answer: - 15.
Describe a situation where you should opt for a lightweight DI container over a full-fledged framework.
Answer:
DI in Design Patterns
- 16.
How does Dependency Injection complement the Factory Design Pattern?
Answer: - 17.
What design pattern may be violated by improper use of Dependency Injection and why?
Answer: - 18.
Can you show how Dependency Injection can be used to implement a Singleton pattern properly?
Answer:
DI and Unit Testing
- 19.
How does Dependency Injection improve the testability of a class?
Answer: - 20.
Explain how Dependency Injection facilitates the use of Mock objects in unit tests.
Answer: - 21.
Can you describe a scenario where Dependency Injection made unit testing more challenging?
Answer:
Best Practices in DI
- 22.
What is constructor injection overuse, and why should it be avoided?
Answer: - 23.
Describe an anti-pattern in Dependency Injection and how to resolve it.
Answer: - 24.
What could be some potential pitfalls when using automatic wire-up features in DI frameworks?
Answer: - 25.
How should developers manage the lifetime of dependencies provided by DI containers?
Answer:
Advanced Concepts in DI
- 26.
Explain the concept of Scoped Dependencies in Dependency Injection.
Answer: - 27.
How does a Dependency Injection framework typically resolve circular dependencies?
Answer: - 28.
What is meant by lazy loading of services in Dependency Injection and when is it useful?
Answer:
Dependency Injection in Microservices
- 29.
How does Dependency Injection support the scalability of microservices?
Answer: - 30.
What role does a DI container play in orchestrating microservice dependencies?
Answer: - 31.
How do you manage cross-service dependencies in microservices architecture with DI?
Answer:
DI in Specific Languages
- 32.
How is Dependency Injection implemented differently in statically-typed versus dynamically-typed languages?
Answer: - 33.
Explain the concept of property injection in C# and where is it most suitable to use?
Answer: - 34.
How do you perform dependency injection in a JavaScript application without a DI framework?
Answer:
Real-world Scenarios and Use Cases
- 35.
Can you describe a real-world problem that you solved using Dependency Injection and how it benefited the project?
Answer:
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