Microservices - Monitoring and Observability
Given this Prometheus query:
rate(http_requests_total[5m]), what does it calculate?Given this Prometheus query: rate(http_requests_total[5m]), what does it calculate?
medium📝 Command Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Understand
Therate()functionrate()function calculates the per-second average increase of a counter over a time window.Step 2: Apply to
This means it measures how fast the total HTTP requests counter increased in the last 5 minutes, giving requests per second.http_requests_total[5m]Final Answer:
The average rate of HTTP requests per second over the last 5 minutes -> Option AQuick Check:
rate() = per-second average increase [OK]
Quick Trick: rate() gives per-second average over time window [OK]
Common Mistakes:
MISTAKES- Thinking rate() returns total count
- Confusing rate() with current active requests
- Assuming rate() returns max value
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