DNS

Some IP addresses reference faulty or slow domain name servers (DNS) which can cause the entire mud to lag for up to 20-30 seconds at a time. To avoid this problem, Arcane Ages keeps track of IP addresses which have caused lag in the past and caches whatever the DNS server returned. It then uses the cached value whenever instead of querying the faulty/slow DNS in the future.

From time to time, the cache should be empty-ed because DNSes eventually get fixed and it becomes safe to use them again. Also, cached results may become inaccurate if the IP's domain name changes.

You can also list the current contents of the cache.