Проводил ли ты когда-либо наблюдение за состоянием работы сервиса?

Yes, monitoring the health of a service is an important part of support and operation of applications. This typically includes monitoring metrics (such as CPU load, memory usage, response time), logging errors and events, and setting up alerts for timely response to issues. For Java services, tools like Prometheus, Grafana, ELK Stack, or specialized APM systems (New Relic, AppDynamics) are often used. This approach helps quickly identify and fix failures, as well as optimize performance.