Java

What types of locks are most efficient in terms of performance?

Will an intermediate operation in Stream API be executed if a terminal operation is not called?

What consequences may arise when using a mutable object as a key in a Map collection?

How can the IoC principle be implemented for dependency management in an application?

Can you describe the stages of an object's lifecycle in Hibernate?

Can you explain what is meant by program or system accountability from the perspective of its analysis and performance optimization?

What are the differences between Stream and Collection interfaces in Java, and in which scenarios are their applications justified?

What role does Hibernate Query Language play in working with databases?

How can an OutOfMemoryError in an application be identified?

How to ensure correct updating of the same entity during concurrent transactions of competing threads?

How to implement an optimistic locking mechanism in Hibernate to prevent conflicts during concurrent data access?

How is the saving and retrieval of an object from the first-level cache in an application performed?

Can you explain the lifecycle stages of a Spring component used in applications?

Junior — Middle

СБЕРDCloud

Can you explain the concept of the first-level cache and its role in the system?

Junior — Middle

DCloudAston

How can you determine the reasons for increasing the processing time of an HTTP GET request?

Can you name the main types of operations performed when working with Stream in Java?

Could you tell me about methods of breaking down complex systems into their components?

Explain the concept of Wildcard in the generics system.

How can data duplication be prevented when using LEFT JOIN in SQL?

In what scenarios are weak references used in programming and why are they needed in practice?