22 October 2020

#Spring_AOP

#Spring_AOP
What is AspectJ?
What is Spring AOP?
What is JBoss AOP?
What is Joinpoint?
What is Advice? Types?
What is Aspect?
What is Before advice?
What is After returning advice?
What is After throwing advice?
What is After advice?
What is Around advice ?
What is Run-time AOP?
What is Compile-time AOP?
What is Source code weaving?
What is Compile-time weaving?
What is Binary weaving?
What is Load-time weaving (LTW)?
What is Proxy-based LTW?
What is a cross-cutting concern? Can you name three typical cross-cutting concerns?
What are the problems arise if you don?t solve a cross-cutting concern via AOP?
What is a pointcut, a join point, advice, an aspect, weaving?
What are the two proxy-types used in Spring AOP?
What is JDK dynamic proxy?
What is CGLIB proxy?
What are the limitations of the two proxy-types used in Spring AOP?
What visibility must Spring bean methods have to be proxied using Spring AOP?
What is a ProceedingJoinPoint? Which advice type is it used with?
What is Target Object?
What are the differences between OOP and AOP ?
What is AOP Alliance
What is the difference between concern and cross-cutting concern in Spring AOP?
What are the available AOP implementations?
What are the different advice types in spring?
What is Spring AOP Proxy?
What is Introduction?
What is joint point and Point cut?
What is Weaving in AOP?
What is AOP?
What is the difference between AOP and OOP?
What is a Join Point in Spring AOP?
What is a Pointcut?
What is Advice?
What is an Aspect?
What are the different types of advice in Spring AOP?
What is the purpose of ProceedingJoinPoint in Spring AOP?
What are the limitations of Spring AOP?
What is the purpose of the @DeclareParents annotation in Spring AOP?
What is the role of the @EnableAspectJAutoProxy annotation in Spring AOP?
What is the difference between @Around advice and other types of advice in Spring AOP?
What are some common pitfalls when using Spring AOP?
What are the different implementations of Spring AOP ?
What are some best practices for using Spring AOP?
What is the difference between compile-time weaving and load-time weaving in AspectJ?
What is a pointcut expression and how do you write one in Spring AOP?
What are AspectJ annotations and how are they used in Spring AOP?
What is the difference between static and dynamic pointcuts in Spring AOP?
Explain the concept of a Proxy in Spring AOP.
Explain the concept of Introduction in Spring AOP.
Explain how to use annotations to define pointcuts in Spring AOP.
Explain how to handle method overloading with Spring AOP.
Explain how you can use Spring AOP to measure and log method execution time, but only for methods annotated with a custom annotation.
Which problem AOP solves?
Which types of advice you can use to try and catch exceptions?
How does Spring solve (implement) a cross-cutting concern?
How to enable @AspectJ Support?
How do you define an Aspect in Spring?
How does Spring AOP differ from AspectJ?
How do you control the order of execution of multiple aspects in Spring AOP?
How would you use Spring AOP to log the execution time of methods?
How can you apply an aspect to all methods in a specific package?
How would you handle exceptions using Spring AOP?
How do you test Spring AOP aspects?
How does Spring AOP handle method signatures and return types in pointcuts?
How would you implement a caching mechanism using Spring AOP?
How can you use Spring AOP to enforce security checks before method execution?
How would you apply transaction management using Spring AOP?
How can you handle multiple advices in a single aspect?
How would you implement a performance monitoring aspect in Spring AOP?
How would you handle dependency injection within an aspect?
How can you exclude certain methods from being advised by a pointcut?
How can you advise methods in a specific class but exclude its subclasses?
How would you implement a retry mechanism for methods that might fail due to transient errors?
How can you dynamically change the behavior of an aspect at runtime?
How can you exclude certain methods from being advised based on custom annotations?
How would you implement auditing for methods that modify data?
How would you ensure that an aspect is only applied to public methods?
How do you combine multiple pointcut expressions in Spring AOP?
How would you implement role-based access control (RBAC) using Spring AOP?
How would you handle a situation where multiple aspects need to apply to the same method but in a specific order?
How can you use Spring AOP to implement a generic error handling mechanism across your application?
How does Spring AOP handle checked exceptions thrown from advice methods?
How would you implement a custom annotation to log the execution time of methods?
How can you ensure that your aspect only applies to methods within a specific package and its subpackages?
How would you use Spring AOP to handle repetitive validation logic?
How would you implement an aspect to measure the performance of repository methods and log the results?
How can you apply an aspect to beans created by a @Bean method in a configuration class?
How would you implement method-level security using Spring AOP?
How would you handle asynchronous processing with Spring AOP?
How would you implement circuit breaker functionality using Spring AOP?
How would you implement request logging for all REST controllers in a Spring Boot application using Spring AOP?
How would you handle multiple advices that need to run in a specific order using Spring AOP?
How would you log method parameters and return values for all methods in a specific package?
How can you exclude certain methods from being advised using Spring AOP?
How would you implement caching using Spring AOP?
How can you monitor and log method execution time for all methods in a specific class?
How would you handle transaction management using Spring AOP?
How would you implement an audit trail for method invocations in a specific service?
How would you implement a rate-limiting mechanism using Spring AOP?
How would you implement distributed tracing using Spring AOP?
How do you handle thread safety in Spring AOP?
How would you combine multiple pointcut expressions in Spring AOP?
How would you use AOP to enforce coding standards or best practices?
How can you handle cross-cutting concerns for batch processing with Spring AOP?
How would you use Spring AOP to implement a fallback mechanism for methods?
How would you implement a retry mechanism using Spring AOP?
How would you handle method-level security for REST endpoints using Spring AOP?
How would you implement a dynamic feature toggle using Spring AOP?
How would you implement dynamic data source routing using Spring AOP?
How do you handle logging and metrics collection in a Spring AOP-based application?
How do you configure a Spring AOP aspect to only apply to certain environments (e.g., development vs. production)?
How do you use Spring AOP to enforce method execution limits, such as a maximum number of calls per minute?
How would you use Spring AOP to implement a caching mechanism with dynamic cache invalidation?
How do you handle exceptions thrown by advice methods in Spring AOP?
How would you implement a performance profiling aspect using Spring AOP?
How would you create a Spring AOP aspect to monitor and log API response times?
How would you use Spring AOP to implement conditional logging based on the environment or configuration?
How would you implement a distributed lock mechanism using Spring AOP to ensure only one instance of a method executes in a distributed system?
How would you use Spring AOP to implement a custom exception handling strategy for specific types of methods or classes?
How would you use Spring AOP to implement a feature toggle that activates or deactivates features based on runtime conditions?
How would you implement a request validation mechanism using Spring AOP for REST API methods?
How would you use Spring AOP to automatically audit changes to domain entities?
How would you implement a Spring AOP aspect to monitor database query performance?
How can you manage the lifecycle of Spring AOP aspects (e.g., initialization and destruction)?
How do you handle method chaining or fluent API patterns in Spring AOP?
How would you implement a distributed tracing mechanism using Spring AOP?
How do you use Spring AOP for security context management in multi-tenant applications?
How would you implement method-level caching with dynamic expiration times using Spring AOP?
How would you handle API rate limiting using Spring AOP for different user roles?
How would you use Spring AOP to manage and track user session activities?
How would you implement a fallback strategy with multiple fallback methods in Spring AOP?
How would you implement logging of all method invocations and their arguments for debugging purposes using Spring AOP?
How would you use Spring AOP to conditionally execute a method based on runtime configuration or feature flags?
How would you use Spring AOP to dynamically change logging levels at runtime?
How do you implement transaction management with Spring AOP?
How would you use Spring AOP to handle method execution timeouts?
How would you implement a retry mechanism using Spring AOP for transient failures?
How would you implement a cache eviction strategy based on data changes using Spring AOP?
How would you implement logging and monitoring for asynchronous methods using Spring AOP?
How would you use Spring AOP to implement an authorization check before method execution?
How would you implement a custom exception handling strategy with logging and alerts using Spring AOP?
How would you use Spring AOP to implement data validation logic for method arguments?
How would you implement a feature toggle using Spring AOP to enable or disable features at runtime?
How would you use Spring AOP to implement a method-level audit trail, recording all changes to a database entity?
How would you use Spring AOP to implement rate limiting based on user IP address?
How would you use Spring AOP to implement a dynamic security policy enforcement?
How do you implement context propagation across asynchronous methods using Spring AOP?
How would you handle cross-cutting concerns in a microservices architecture using Spring AOP?
How would you implement a dynamic proxy for external service calls with retry and timeout logic using Spring AOP?
How would you use Spring AOP to implement user-specific data access controls based on user roles?
How would you use Spring AOP to implement a multi-step validation process for complex business logic?
How would you use Spring AOP to implement a dynamic logging level based on runtime configuration changes?
How would you use Spring AOP to implement conditional caching based on request parameters or headers?
How would you use Spring AOP to implement API rate limiting for specific user accounts?
How do you handle cross-cutting concerns such as tracing distributed transactions across microservices using Spring AOP?
How would you use Spring AOP to monitor and alert on performance metrics for specific methods?
How would you use Spring AOP to enforce data integrity constraints across service methods?
How do you handle asynchronous exception handling with Spring AOP?
How would you use Spring AOP to implement multi-level authorization for different roles and permissions?
How would you use Spring AOP to implement a method-level data transformation based on request headers or parameters?
How would you use Spring AOP to enforce data validation rules across multiple service methods?
How would you use Spring AOP to manage feature toggles that control the execution of certain methods or features?
How would you use Spring AOP to implement a custom caching mechanism with different expiration times based on method parameters?
How would you use Spring AOP to implement a method-level lock to prevent simultaneous execution of a method across different threads?
How would you use Spring AOP to dynamically change the behavior of a method based on the environment (e.g., development, production)?
How would you use Spring AOP to implement logging that includes the duration of method execution and exception details?
How would you use Spring AOP to apply a retry mechanism to methods based on specific exception types?
How would you use Spring AOP to implement conditional logic that changes method behavior based on user location or device type?
How would you use Spring AOP to track user activity across various methods in a web application?
How would you use Spring AOP to dynamically adjust logging verbosity based on runtime conditions or user preferences?
How would you use Spring AOP to enforce data transformation rules before saving data to a database?
How would you use Spring AOP to implement conditional execution of methods based on feature flags or configuration properties?
How would you use Spring AOP to implement method-level exception handling that involves sending notifications or performing cleanup operations?
How would you use Spring AOP to implement a security mechanism that checks for user authentication and authorization before executing methods?
How would you use Spring AOP to integrate with an external service for metrics collection and reporting?
How would you use Spring AOP to dynamically switch between different implementations of a service based on runtime conditions?
How would you use Spring AOP to enforce business rules that span multiple service methods?
How would you use Spring AOP to perform method-level data encryption or decryption based on annotations?
How would you use Spring AOP to implement method-level versioning where different versions of a method are called based on the API version?
How would you use Spring AOP to log user actions and interactions in a system, including method calls and parameter values?
How would you use Spring AOP to dynamically change the behavior of methods based on user roles or permissions stored in a database?
How would you use Spring AOP to validate method parameters against custom constraints defined in annotations?
How would you use Spring AOP to create a cross-cutting concern for handling internationalization of error messages and user notifications?
Difference Run-time AOP vs Compile-time AOP ?
Spring_AOP
  • Aspect
  • Join Point
  • Advice - Before, After, After Returning, After Throwing, Around
  • Pointcut
  • Introduction
  • Weaving
Configuration
  • XML-based Configuration
  • Annotation-based Configuration
Proxies
  • Spring AOP uses proxies to implement aspects.
  • JDK Dynamic Proxies: Used if the target object implements at least one interface.
  • CGLIB Proxies: Used if the target object does not implement any interfaces.
Declarative vs Programmatic AOP
  • Declarative AOP: Configuring aspects using XML or annotations.
  • Programmatic AOP: Manually creating proxies and applying aspects in code.
Load-Time Weaving (LTW):
  • Enables aspects to be woven into classes during class loading rather than at compile time or runtime.
  • Useful for scenarios where runtime proxies are not sufficient.

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