As part of our log exploration API development, we'd like to add some Prometheus metrics to our API server. Discover what metrics can we add and what metrics will be useful. The initial list of metrics may look like this:

• Number of API calls for each endpoint
• Number of calls to the ES/Loki
• Response time from ES/Loki
• Response time for each endpoint

Acceptance criteria:

• Metrics added to the API server (using another endpoint). Our metrics system is using PULL, so the API endpoint should be available.