Did you have to work on a state machine for this task?
Middle+
173
Java
14770
265
Where did the figure 35K come from, and how was it calculated?
Senior
173
How else can routing be implemented without binding to class name?
Senior
173
What is GOF (Gang of Four) and which patterns from this book are implemented in the standard JDK?
Middle
173
Tell me about your current experience and tech stack.
173
Transform a list of objects with fields k and value into a Map using Stream API so that data is not lost (k can repeat)
Senior
173
What kind of events, from a business process perspective, fall into retry chains and DLT?
Senior
173
What is the difference between ArrayList and LinkedList? Why are they needed if arrays exist?
Senior
173
How does WAL (Write-Ahead Log) work during writing?
Senior
173
Why are you looking for a new job?
Middle+
173
Explain to a third-grader how a hash table works.
Senior
173
If we have an external API that allows a maximum of 10 concurrent connections, which class from the java.util.concurrent package would you use to limit the number of parallel calls?
Senior
173
What is the difference between checked and unchecked exceptions? When should RuntimeException be used?
Senior
173
Have you conducted testing of your code? What was the coverage percentage?
Middle
173
How did you handle data streaming at 870 RPS in your last job?
Senior
173
How to increase the number of consumers in a group with ten partitions?
Senior
173
Как обеспечить exactly-once семантику в Kafka?
Senior
173
Tell me about yourself. Your last two companies — [company 1] and [company 2]. What did you do?
173
How is HashMap structured?
173
How to implement optimistic locking in code? What happens in case of a version conflict?
Senior
173