On 5.8.2019 12.14, 姜伯洋 wrote: > Hello everyone > [root@ops-dns-recursor-3 ~]# rec_control get-all|grep cache > cache-entries121 > cache-hits0 > cache-misses12 > max-cache-entries3000000 > max-packetcache-entries500000 > negcache-entries4 > packetcache-entries7 > packetcache-hits51 > packetcache-misses12 > I don't know if the data monitored on my authoritative node is normal, > but it seems that there is a high probability that the miss will be > lost. How can I optimize it? > > Before optimizing it, I would recommend you take advantage of https://metrics.powerdns.com/ to see how your cache hit/missrate behaves over time. This way you have better understanding of how it behaves.
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