Java

Can you explain what Spring is and what it is used for in Java development?

Junior — Middle

AstonУдобный СофтМВидео+10

Redis has two persistence mechanisms (RDB and AOF) — have you considered these for reducing data loss window?

Senior

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Have you ever written your own starters? For what task?

Middle+

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Are you ready to participate in support of services in production, on duty?

Middle+

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How to make parallel calls to multiple services to generate a report?

Senior

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How is optimistic locking implemented in data management systems?

Junior — Middle

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The photo/video publishing service started processing requests slowly during a sharp traffic increase. How to determine whether the problem is on your side or with external integration?

Senior

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How to find slow queries in a sluggish database and what to do with them?

Senior

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How to fix deadlock in a Wallets task? Can atomic operations be used?

Senior

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What does the use of Collections.synchronizedMap entail, and what are the advantages and disadvantages of this method?

Junior — Middle

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How do you assess your experience with Spring, Spring Boot? What have you done? Do you know how it works under the hood?

Middle+

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What technologies and tools have you used in your latest project?

Junior — Middle

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Как настроить размер thread pool для параллельных HTTP запросов?

Senior

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How does the nested @Transactional annotation work if the inner method is in another service?

Middle+

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How to resolve cyclic dependencies when using Dependency Injection?

Middle+

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What type of metric is best suited for a graph of order count per second?

Middle+

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What TTL should be chosen for caching rates if rates change infrequently?

Senior

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For what situations and tasks is the function used in programming?

Junior — Middle

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Read the code, determine whether the program will finish execution and what will be printed at the end in the log.

Senior

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Can you give an example of a situation where using ThreadLocal is justified?

Junior — Middle

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