Use CNAME url for proxy

Help
1

I’m using Caddy 1.
How Caddy resolve the URL I use in the proxy? Does we will face problem if our URL change the IPs behind the URL all the time?
Does using IP will be the best choice?

Thanks

2

Hey Noam – if you specify a proxy upstream using a domain name, the local DNS resolver will be used to determine the machine’s IP address. Quite often, DNS is the common factor in frustrating networking problems, so I would always recommend using IP addresses when possible.

3

Does Caddy save the result of the DNS resolver on cache for some time or for every request it use it?

4

Almost all DNS resolvers are caching resolvers already; Caddy does not concern itself with that, it just asks the system for a DNS lookup and the system responds, which is almost always from a cache (dictated by DNS entry’s TTL value, or at least, it’s supposed to be). DNS resolvers are typically present in the OS, the LAN/router, the ISP, and possibly even further out.

5

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