DnsCache.storeNegative

void storeNegative(scope  const(char)[]  hostname,  uint  ttlSeconds =  0,
          DnsError error =  DnsError.NONAME)

@trusted

Store a negative (error) result in the cache.

Prevents repeated lookups for hostnames that do not exist or are experiencing non-recoverable errors.

`hostname`	Hostname that failed to resolve.
`ttlSeconds`	Negative cache TTL. Uses `negativeTtl` from config when zero.
`error`	The DNS error code. Defaults to `NONAME`.