Reactor-netty: Add DNS resolver observer, and options for client
We should be able to provide TcpClient options for DNS resolution in addition to custom resolver as in #501 :
- DNS resolution timeout
- DNS positive/negative TTL
- [?] Internal cache eviction period
- doOnResolvedAddress
typenhancement
smaldini
👍1
All 3 comments
It would indeed be very handy to be able to fine-tune some of the DNS resolution settings!
In addition to the points listed above, I would suggest adding the ability to "manually" evict from the internal cache. For example, some content delivery networks recommend to re-resolve DNS on certain types of status codes (e.g. 500 internal server error). Client code could build simple logic around such error cases and force DNS re-resolution on subsequent attempts of the same request.
PyvesB
on 4 Feb 2020
👍3
Reactor Netty now uses Netty DNS Resolver #1252
violetagg
on 7 Aug 2020
Thanks for looking into this @violetagg !
PyvesB
on 7 Aug 2020
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Most helpful comment
It would indeed be very handy to be able to fine-tune some of the DNS resolution settings!
In addition to the points listed above, I would suggest adding the ability to "manually" evict from the internal cache. For example, some content delivery networks recommend to re-resolve DNS on certain types of status codes (e.g. 500 internal server error). Client code could build simple logic around such error cases and force DNS re-resolution on subsequent attempts of the same request.