Senior Technical Architect Interview Questions and Answers

Error handling in our project is implemented using try-catch blocks and custom exception classes.

• We use try-catch blocks to catch exceptions and handle them appropriately.

• We have custom exception classes for specific types of errors to provide more detailed information.

• We log errors to a centralized logging system for monitoring and troubleshooting.

• We have defined error codes and messages for easier identification and resolution of issues.

The Observer pattern is used in SpringBoot for implementing event handling and notification mechanisms.

• The Observer pattern is commonly used in SpringBoot for implementing event listeners and publishers.

• It allows objects to subscribe to and receive notifications about changes or events in other objects.

• Spring's ApplicationEvent and ApplicationListener interfaces are examples of the Observer pattern in action.

• Listeners can be registered with the ApplicationEventPublisher to re...read more

Liskov Substitution Principle (L) and Dependency Inversion Principle (D) in SOLID

• Liskov Substitution Principle (L) states that objects of a superclass should be replaceable with objects of its subclasses without affecting the program's correctness.

• Dependency Inversion Principle (D) states that high-level modules should not depend on low-level modules. Both should depend on abstractions.

• Example for Liskov Substitution Principle: If a program expects a base class, it should be ...read more

Debugging crash dumps involves analyzing the dump file to identify the cause of the crash.

• Use a debugger tool to analyze the dump file

• Identify the exception code and the module where the crash occurred

• Check for memory leaks and corruption

• Analyze the call stack to identify the root cause

• Use symbols to decode the stack trace

• Look for any relevant logs or events leading up to the crash

Create an app with admin and user roles

• Implement role-based access control (RBAC)

• Admins have access to all features and can manage users

• Users have limited access based on their role

• Use authentication and authorization mechanisms

• Consider using frameworks like Spring Security or Django's authentication system

Solution architecture involves designing and describing the structure, behavior, and views of a system.

• Identifying key components and their interactions

• Defining data flow and communication protocols

• Ensuring scalability, performance, and security

• Creating detailed diagrams and documentation

• Collaborating with stakeholders to align with business goals

Association represents a relationship between two objects, while aggregation represents a relationship where one object owns or contains another object.

• Association is a weaker relationship than aggregation.

• Aggregation is a type of association.

• In association, objects have an independent lifecycle, while in aggregation, objects have a dependent lifecycle.

• Example of association: A student can have multiple teachers. Example of aggregation: A car has an engine.

• Association is repr...read more

Gen Ai use case involves utilizing artificial intelligence to generate personalized content or recommendations based on user data.

• Personalized product recommendations on e-commerce websites

• Customized content suggestions on streaming platforms

• Tailored marketing campaigns based on user behavior