Why is using parallel streams faster than sequential ones when calculating the sum of numbers from 1 to 100?
Junior — Middle
301
Java
14621
265
How to correctly implement the hashCode and equals methods in a class?
281
What actions can be taken to add a unique trace identifier to log entries?
Junior — Middle
276
What reasons might be considered unreasonable when creating indexes on all columns of a database table?
Middle — Middle+
274
How is request path tracking implemented in the system?
Junior — Middle
271
What are the differences between using HashMap with synchronized methods and using ConcurrentHashMap in a multithreaded environment?
Junior — Middle
269
Have you created your own module or starter project based on Spring Boot?
Junior — Middle
268
Explain the purpose and features of using the volatile keyword in programming.
Junior — Middle
261
What is the main purpose of Kafka Topic in a message exchange system?
Junior — Middle
260
Explain the mechanism of the @Transactional annotation in Spring Framework and how it manages transactions.
Junior — Middle
260
What default transaction isolation level is used in the Spring framework?
Junior — Middle
259
What are the main tasks solved by the Spring framework in application development?
256
Explain what the abbreviation MDC means in the context of databases or data storage systems.
Junior — Middle
255
At what stage of the interview is the use of a static synchronized method considered, and how is it used for access synchronization?
Junior — Middle
253
Who is responsible for setting the number of partitions in Kafka topics in your company?
Junior — Middle
252
Is it possible to achieve higher performance when summing numbers from 1 to 100 by using parallel streams instead of regular ones?
Junior — Middle
249
At what isolation level is dirty read possible?
Senior
246
How is data integrity ensured when one of the database nodes fails in a cluster architecture?
Junior — Middle
246
What resources and how much time are required to create and launch a new thread of execution?
Junior — Middle
244
How to choose an index to optimize query speed?
Junior — Middle
240