Java

Could you explain what a cursor is in the context of working with databases?

What is the use of flatMap in the context of Optional, and what is its main idea?

Junior — Middle

СБЕР

Can you explain the principles of how Apache Kafka works and how it ensures stream data processing?

Junior — Middle

SimbirsoftProoftechА Деньги+3

Explain the purpose and features of marker interfaces in programming.

Are there established criteria for defining the role and distribution of partitions and brokers in the system?

Junior — Middle

РЖД

Tell us about your experience analyzing and optimizing SQL query performance.

Can a string data type be considered a built-in primitive in a programming language?

Can you explain what the given-when-then pattern means and how it is used in testing?

Can you explain what is meant by monolithic architecture in software development?

Junior — Middle

Самокат

Is it possible to completely eliminate the possibility of errors in programming?

What tools or approaches did you use for collecting and analyzing metrics in your last project?

Junior — Middle

СБЕР

Have you had experience working with database management systems (DBMS)?

How can you undo changes made in a remote repository?

What is the main function of the parallelStream method in Java?

Can PostgreSQL be considered a relational database management system?

Can you explain the purpose and working principle of the HAVING operator in SQL queries?

Does HashMap provide instant access to elements by value in all cases?

Can you explain the purpose of the @Data annotation from Lombok and how it simplifies class development in Java?

What is your experience with using the Fork/Join mechanism for parallel task processing?

How can two different objects that use the same key be placed in a HashMap?

Junior — Middle

СБЕР