Tell about a case when you noticed a process was not working or was working poorly, proposed an idea, and it was implemented.

One example from my practice: I noticed that in one of the services of a Java project, the request processing was significantly slowed down due to inefficient use of threads and locks.

I proposed implementing a thread pool with a limit on the number of tasks running simultaneously and using non-blocking data structures for message exchange between threads. This helped reduce wait times and increased throughput.

After discussing with the team and conducting tests, we implemented this idea, which led to a 30% reduction in service response time and improved stability under load.

This case demonstrates the importance of careful performance analysis and the willingness to suggest architectural improvements.