You want to create a Grafana dashboard showing the average response time of your Spring Boot app over the last 5 minutes. Which Prometheus query should you use?

hard📝 Workflow Q15 of 15

Spring Boot - Actuator

Arate(http_server_requests_seconds_sum[5m]) / rate(http_server_requests_seconds_count[5m])

Bsum(http_server_requests_seconds_sum) / sum(http_server_requests_seconds_count)

Cavg_over_time(http_server_requests_seconds_sum[5m])

Dcount_over_time(http_server_requests_seconds_count[5m])

Step-by-Step Solution

Solution:

Step 1: Understand metrics for response time
http_server_requests_seconds_sum is total time; count is number of requests.
Step 2: Calculate average over 5 minutes
Use rate() to get per-second increase, then divide sum by count for average.
Final Answer:
rate(http_server_requests_seconds_sum[5m]) / rate(http_server_requests_seconds_count[5m]) -> Option A
Quick Check:
Average = sum rate / count rate [OK]

Quick Trick: Divide sum rate by count rate for average response time [OK]

Common Mistakes:

Using sum without rate causes wrong aggregation
Using avg_over_time on sum metric alone
Counting requests instead of averaging time

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More Spring Boot Quizzes

You want to create a Grafana dashboard showing the average response time of your Spring Boot app over the last 5 minutes. Which Prometheus query should you use?

Step 1: Understand metrics for response time

Step 2: Calculate average over 5 minutes

Final Answer:

Quick Check:

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