Symfony Interview Questions and Answers
Ques 16. Explain Symfony Services and Dependency Injection Container.
Services in Symfony are PHP objects that perform specific tasks. The Dependency Injection Container (DIC) manages the instantiation and configuration of these services, promoting reusability and testability.
Example:
You can define services in the services.yaml file and inject them into other services or controllers.
Ques 17. What is Symfony Messenger component?
Symfony Messenger is a component that simplifies the implementation of message-based communication between different parts of a Symfony application. It helps decouple and organize code by handling message handling and routing.
Example:
You can use Messenger to send and handle messages, such as commands, events, and queries.
Ques 18. Explain Symfony Cache component.
Symfony Cache is a component that provides a flexible and efficient caching system. It supports different caching adapters, including file-based, Redis, and more, allowing developers to cache data and improve application performance.
Example:
You can use cache pools to store and retrieve cached data.
Ques 19. How can you handle authentication in Symfony?
Symfony provides a robust authentication system that can be configured using security.yaml. You can use different authentication providers, such as in-memory, database, or third-party providers.
Example:
Symfony supports various authentication methods, including form-based login, token-based API authentication, and more.
Ques 20. Explain Symfony Workflow component.
Symfony Workflow is a component that allows developers to model and execute business processes in a Symfony application. It provides a way to define and manage the states and transitions of entities.
Example:
You can use Workflow to model complex state machines and define events triggered by state transitions.
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