Java

What are the differences between MongoDB, ClickHouse, Redis, and Postgres?

Senior

СБЕР

What is DocumentType on line 15 and why is it needed?

Senior

СБЕР

What is your opinion of Moscow as a place to live or work?

Why is the @Component annotation not allowed for methods in Spring?

Junior — Middle

СБЕР Корпус

How to implement pagination in an API? The OFFSET problem in PostgreSQL and alternatives (cursor-based pagination)?

What methods can be used to implement the creation of new contexts in an application?

Have you had experience implementing new rules or logic in a Spring Security-based security system?

Junior — Middle

СБЕР Страхование

Can you explain the essence of the Boyce-Codd normal form and its main features?

How is argument passing implemented in Java when calling methods?

What tools and methods did you use when implementing multithreading in your projects?

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

Where are strings located in memory in a Java program?

Have you used third-party tools for working with BitBucket?

Junior — Middle

СБЕР

What is the difference between Service, Controller, and Repository layers in Spring architecture?

What is the purpose of the notify method in the Object class in Java?

Junior — Middle

OZON

Can you explain the concept of idempotency in API methods or functions?

How did you determine code coverage with unit tests in your project?

What principles or criteria do you consider when choosing to use unchecked exceptions in your code?

Junior — Middle

СБЕР

What methods can improve the efficiency of information retrieval in PostgreSQL?

What problems can occur when working with Hibernate entities?