Have you had experience working with monitoring systems?

Yes, I have experience working with monitoring systems. In projects, I used tools such as Prometheus for metrics collection and Grafana for visualization. I am also familiar with setting up alerting through Alertmanager.

For example, for Python applications, I often integrated metric exporters using the prometheus_client library, which allows collecting data on performance, request counts, errors, etc.

Example of exporting metrics in Python:

from prometheus_client import start_http_server, Counter
import random
import time

REQUESTS = Counter('app_requests_total', 'Total number of requests')

def process_request():
    REQUESTS.inc()
    time.sleep(random.random())

if __name__ == '__main__':
    start_http_server(8000)  # Start HTTP server for metrics
    while True:
        process_request()

I also have experience setting up log monitoring with the ELK stack (Elasticsearch, Logstash, Kibana) and integrating with notification systems (Slack, email). This allowed for quick incident response and analysis of application behavior.