Java

How can you connect a new data object (DTO) that cannot be changed with an existing DTO?

Junior — Middle

СБЕР

Question 7. There is a service ExampleService (see figure). If an external service calls the following methods in sequence: exampleService.getCityFromCache(100000); exampleService.getCity(100000); How many times will there be a call to CityDao::getCity if the cache was empty? @Component @RequiredArgsConstructor public class ExampleService { private final CityDao dao; @Cacheable public String getCityFromCache(int index) { return dao.getCity(index); } public String getCity(int index) { return getCityFromCache(index); } }

Senior

Альфа-Банк

How can object behavior management be implemented through polymorphism in code?

How does a controller determine which method to handle based on the HTTP request?

What are the main advantages and disadvantages of using indexes in a database?

Junior — Middle

ЛанитСБЕР

Explain the concept of cascading in the context of web development or programming.

Tell me about your experience

How to display 0 instead of NULL for departments without employees?

Senior

СБЕР

Will an index on owner_id be used for a query with a condition on likes_count?

Senior

Т-Банк

What internal mechanisms are implemented in Parallel Stream to ensure parallel data processing?

Junior — Middle

ОТП Банк

What is the difference between using the package command and the install command in software management?

How does the map method work in the Optional class and what is it used for?

Is it possible to use the notify method on an Object without owning the synchronized lock?

Junior — Middle

OZON

What is the purpose of the double-checked locking mechanism in multithreaded programming?

How to implement Saga? How to do it?

What potential problems can arise from improper use of exceptions in code?

Junior — Middle

ОТП Банк

Are sharding and replication concepts related?

Do you evaluate the problem of cyclic dependencies in projects?

Is it recommended to use Kafka in all scenarios and projects?

Middle

ОТП Банк

Have you participated in creating or writing specifications for components in the Spring Framework?