Java

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

Junior — Middle

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What methods can be used to reduce cache growth?

Junior — Middle

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

Junior — Middle

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How to identify which SQL queries require analysis in PostgreSQL?

Junior — Middle

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

Junior — Middle

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How is the effectiveness of element search in the TreeMap data structure evaluated?

Junior — Middle

OZONBell IntegratorТ-Банк+1

What database performance improvement methods are available under high CPU load?

Junior — Middle

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Should a profiler be used in a production environment to troubleshoot OutOfMemoryError errors?

Junior — Middle

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Can you explain what is meant by a non-cumulative memory area in JVM?

Junior — Middle

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In which cases is it advisable to use the Supplier pattern in programming?

Middle — Middle+

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What methods can be used to create an index for a table with a large number of records in PostgreSQL, for example, a million rows?

Junior — Middle

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Why is a String object in Java immutable?

Junior — Middle

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When and why should you use ConcurrentHashMap instead of a regular HashMap in a multithreaded environment?

Junior — Middle

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Explain the principle of optimistic locking in data management systems.

Junior — Middle

Т-БанкIfellow

How is data integrity guaranteed when using basic data types in Java?

Junior — Middle

Т-БанкJSA GroupА Деньги

How did you first start learning and using the Java programming language?

Junior — Middle

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How can optimistic locking be ensured for managing concurrent data updates?

Middle — Middle+

AstonProoftechТ-Банк+1

What are the main advantages and disadvantages of using ExecutorService in Java?

Junior — Middle

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How can you determine that a service restart is due to cache updates caused by OutOfMemoryError?

Middle — Middle+

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How are topics and partitions related in Kafka? Is message order guaranteed across different partitions?

Middle+

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