Java Magazine, Sept/Oct 2018
ORACLE COM JAVAMAGAZINE SEPTEMBER OCTOBER 2018 52 the leading edge Figure 2 shows a screenshot of the monitoring app while I reran one of the tests In Figure 2 the yellow circle indicates the volume and the health of the requests and the blue line indicates the request rate I had 66 successful requests within this time period 16 time outs 12 exceptions and a 24 command error rate for the reported time interval The Hystrix command processed requests at a speed of 98 requests per second Hystrix monitoring provides useful information as you look at systems you depend on And based on my experience running the dashboard helps you understand how Hystrix works The dashboard is also extremely helpful in figuring out which parameters to adjust For example for a while I ran my example application configured with the Hystrix default thread pool size of 10 threads I observed that responses were coming to the client much faster than I expected It turns out there were not enough threads processing the requests Figure 2 Screenshot of monitoring app
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