title: how to display the rate at which requests are being received over a certain time interval in grafana
body: <p>right now this widget reports the number of responses given by the the API as a cumulative amount. Because of this, differences in the rate is not immediately clear. How to change the graph to display the rate? eg: at 10am-4pm the request I got is 1000, 4pm-10pm is 500, it go up and down, not cumulative.</p>
  <p>This is right now
  <a href="https://i.stack.imgur.com/VcQBj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VcQBj.png" alt="enter image description here" /></a></p>
  <p>This is Prometheus endpoints:</p>
  <pre><code># HELP get_tax_requests_seconds Response latency(seconds) of gRPC.
  # TYPE get_tax_requests_seconds histogram
  get_tax_requests_seconds{m_application=&quot;adapter-mvp&quot;,method = &quot;GetData&quot;, m_env=&quot;test&quot;,quantile=&quot;0.5&quot;,} 0.0
  
  </code></pre>
  <p>After I add rate, it shows like this, not the number of request</p>
  <p><a href="https://i.stack.imgur.com/XE9mr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XE9mr.png" alt="enter image description here" /></a></p>