AuthoritativeDnsServerCache (Netty API Reference (4.2.7.Final))

All Known Implementing Classes:

DefaultAuthoritativeDnsServerCache, NoopAuthoritativeDnsServerCache
```
public interface AuthoritativeDnsServerCache
```
Cache which stores the nameservers that should be used to resolve a specific hostname.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`cache(java.lang.String hostname, java.net.InetSocketAddress address, long originalTtl, EventLoop loop)`	Caches a nameserver that should be used to resolve the given hostname.
`void`	`clear()`	Clears all cached nameservers.
`boolean`	`clear(java.lang.String hostname)`	Clears the cached nameservers for the specified hostname.
`DnsServerAddressStream`	`get(java.lang.String hostname)`	Returns the cached nameservers that should be used to resolve the given hostname.

- Method Detail
  - get
```
DnsServerAddressStream get(java.lang.String hostname)
```
    Returns the cached nameservers that should be used to resolve the given hostname. The returned DnsServerAddressStream may contain unresolved InetSocketAddresses that will be resolved when needed while resolving other domain names.
    
    Parameters:
    
    hostname - the hostname
    
    Returns:
    
    the cached entries or an null if none.
  - cache
```
void cache(java.lang.String hostname,
           java.net.InetSocketAddress address,
           long originalTtl,
           EventLoop loop)
```
    Caches a nameserver that should be used to resolve the given hostname.
    
    Parameters:
    
    hostname - the hostname
    
    address - the nameserver address (which may be unresolved).
    
    originalTtl - the TTL as returned by the DNS server
    
    loop - the EventLoop used to register the TTL timeout
  - clear
```
void clear()
```
    Clears all cached nameservers.
    
    See Also:
    
    clear(String)
  - clear
```
boolean clear(java.lang.String hostname)
```
    Clears the cached nameservers for the specified hostname.
    
    Returns:
    
    true if and only if there was an entry for the specified host name in the cache and it has been removed by this method