# resolver timeout, default 30s.
timeout     10s

# resolver cache TTL, 
# minus value means that cache is disabled,
# default to the TTL in DNS server response.
# ttl         300s

# period for live reloading
reload      10s

# ip[:port]  [protocol]  [hostname]

https://1.0.0.1/dns-query
1.1.1.1:853 tls     cloudflare-dns.com
8.8.8.8
8.8.8.8     tcp
1.1.1.1     udp
1.1.1.1:53  tcp