HAProxy config showing static ip, dns slots, healthcheck, healthcheck with different frequency

haproxy_config.cfg

defaults
  mode http
  timeout connect 5s
  timeout client  30s
  timeout server  30s

# Backend 1: Static IPs without health check
backend backend1
  balance roundrobin
  server static1 10.0.0.1:80
  server static2 10.0.0.2:80

# Backend 2: Static IPs with health check
backend backend2
  balance roundrobin
  option httpchk
  server srv1 192.168.1.1:80 check
  server srv2 192.168.1.2:80 check

# Backend 3: DNS-resolved slots without health check
backend backend3
  balance roundrobin
  server-template cache 5 cache.service.local:80 resolvers dns resolve-prefer ipv4

# Backend 4: DNS-resolved slots with health check
backend backend4
  balance roundrobin
  option httpchk
  server-template websrv 5 web.service.local:80 check resolvers dns resolve-prefer ipv4

# Backend 5: HTTP-specific health check
backend backend5
  balance roundrobin
  option httpchk
  # Servers with regular and down-check intervals
  server srv1 192.168.1.1:80 check inter 5s downinter 1s fall 2 rise 3
  server srv2 192.168.1.2:80 check inter 5s downinter 1s fall 2 rise 3
  server srv3 192.168.1.3:80 check inter 5s downinter 1s fall 2 rise 3

# DNS resolvers definition
resolvers dns
  nameserver google 8.8.8.8:53
  resolve_retries       3
  timeout retry         2s
  hold valid            10s