Tag Archives: nscd

NSCD – Cache DNS requests

DNS queries can be an issue on Cloud infrastructure, where SaaS are generally configured using FQDN instead of IP. This means that every time your application needs MySQL or Redis or any of the Platform/Software as a service, a DNS query will be issued.

Sometimes this could hammer the local DNS and service providers might block your DNS traffic.

To minimise this, you could use nscd to cache the DNS queries and reduce the traffic to the local DNS servers.