[dnsdist] Disable cache for certain sources

[Andreas Wili]

Hello!

I have dnsdist deployed centrally to route DNS queries to various backends:

newServer({
    address='192.168.100.10',
    name='backend1',
})

newServer({
    address='192.168.100.20',
    name='backend2',
})

In this setup, I use caching as follows:
cache_all_queries = newPacketCache(2000000, {maxTTL=86400, minTTL=0, temporaryFailureTTL=60, staleTTL=60})
getPool(""):setCache(cache_all_queries)

I would now need to disable caching for certain servers that issue a DNS query. Is there a rule for this or any other option?

Regards,
Andreas
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