Best practice for DNS caching in RHEL

Solution Verified - Updated -

Issue

  • How to configure DNS cache in RHEL ?
  • How to cache DNS query in RHEL ?

Environment

  • Red Hat Enterprise Linux
  • NSCD(Removed in Fedora 36+/RHEL 10 replaced by systemd-resolved)
  • DNSMASQ
  • UNBOUND
  • systemd-resolved(RHEL 8 or higher)

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