Embedded / IoT

Tell us about yourself and your work experience

How was event processing idempotency implemented in Kafka?

What is Spring Proxy and why does it not create a wrapper around private methods?

How was the race condition problem solved when processing a single record concurrently by multiple consumers?

Tell me more about the architecture: how many services were in your area of responsibility?

How did it work before your optimization? Were there double charges?

What are cyclic dependencies? Under which dependency injection method do we encounter them more often?

Are you referring to debiting a subscriber’s personal account? Why did this problem occur before your intervention?

What was used as the idempotency key?

Why can't indexes be added to all columns of a table?

What message broker was used in the company for Event-Driven interaction?

What are errors in Java? Have you encountered them in practice?

What tasks would you solve using Generics in Java (excluding collections)?

What is idempotency?

How to make the library consumer obliged to handle a custom exception?

If a bean C calls a method of bean A with logging aspect, and inside A, private methods B, C, D are called — are the calls to B, C, D logged?