Live polling dashboard

Server prefetches initial values, useQuery takes over with refetchInterval. The dot pulses every time react-query refetches in the background — values update without a loading flash.

updated 0.0s agointerval:

active users

1,429

req/sec

1,060

cpu

40%

memory

420 MB

error rate

0.35%

server time

1:42:53 AM

Open Network → Fetch/XHR. You'll see one getMetrics request per interval. Hit pause and the requests stop. Switch tabs and they pause too (refetchIntervalInBackground: false) — react-query is well-behaved about wasted work.