Can you explain what the instanceof operator does in a programming language?
Junior — Middle
218
Java
14621
265
Can you explain the concept of the first-level cache and its role in the system?
218
What is the time complexity of searching for an element in a HashMap in the worst-case scenario?
Junior — Middle
218
What is the difference between using lambda expressions and anonymous classes in Java?
Junior — Middle
218
What to do if a nested transaction ends with an error, and the outer transaction is suspended at this time?
Junior — Middle
217
Have you had experience working with functional interfaces in your projects?
Junior — Middle
217
What role do transaction isolation levels play in ensuring data consistency in a database?
Junior — Middle
217
By what methods is the scaling of a microservice system ensured?
Middle — Middle+
217
217
Does the proxy object create a new instance of the same class as the target object?
Junior — Middle
217
What is the purpose of the equals method in Java?
Junior — Middle
217
Can you tell about the main concepts and theoretical foundations of Kafka?
Junior — Middle
217
Where in the application would you choose to store the database connection URL?
Junior — Middle
216
Can you explain what Propagation.NESTED means in the context of event processing?
Junior — Middle
216
Tell us about your experience using configuration automation tools such as Chef.
Junior — Middle
216
When does the asynchronous operation start when using CompletableFuture in Java?
Junior — Middle
216
Can you name the caching types used in Hibernate?
Junior — Middle
216
What tools or methods have you used for testing your software?
Junior — Middle
215
Have you discussed configuring caching mechanisms in Hibernate to improve database efficiency?
Junior — Middle
215
What data structure provides fast search of elements based on equality comparison, performed in constant time?
Junior — Middle
215