Java

What steps would you take to diagnose the causes of low database performance?

Junior — Middle

Т-Банк

Can you explain what CAS means and how it is used in programming?

Junior — Middle

Т-Банк

Could you explain what the term 'Explain' means in the context of this tool or model?

Junior — Middle

Т-Банк

How can the performance of SQL queries in a database be improved?

Junior — Middle

SecreateСеверсталь-ИфокомProoftech+4

What does the REPEATABLE READ isolation level mean in the context of transactions, and why is it important for data integrity?

Junior — Middle

Т-БанкСБЕР

How is the metric collection system integrated into the project?

Junior — Middle

Т-Банк

Explain the meaning and purpose of the ThreadLocal class in multithreaded programming.

Junior — Middle

Т-БанкСБЕРJSA Group

What is the role of a foreign key in a database and why is it important?

Junior — Middle

Т-Банк

If Redis crashes, how did you handle this situation? Were the data from the last hour lost?

Senior

Т-Банк

Why is it important to release resources after their use in a program?

Junior — Middle

Т-Банк

What are the advantages and disadvantages of using CompletableFuture for handling asynchronous tasks in Java?

Junior — Middle

Т-Банк

How is type erasure implemented in the context of generic types in programming languages?

Junior — Middle

Т-Банк

Have you had the opportunity to work directly or access production servers in your last project?

Junior — Middle

Т-Банк

What methods can be used to reduce cache growth?

Junior — Middle

Т-Банк

Tell us about a large/interesting task you solved. What did you do at [company/project]?

Senior

Т-Банк

Explain what an index that covers all fields for a query means in the context of databases.

Junior — Middle

Т-Банк

What methods can be used to perform event logging in the system?

Junior — Middle

Т-Банк

Разница между newCachedThreadPool и newFixedThreadPool. Когда использовать каждый?

Senior

Т-Банк

Tell me about how the work process was organized: from whom you received tasks, in what form, what artifacts you left?

Senior

Т-Банк

What are the differences between the implementations of the Map interface: HashMap and TreeMap, and in which cases is it preferable to use each of them?

Junior — Middle

IT OneОТП БанкСБЕР+1