Package org.opennms.netmgt.dnsresolver.netty

Class CaffeineCache<E>

java.lang.Object

org.opennms.netmgt.dnsresolver.netty.CaffeineCache<E>

public abstract class CaffeineCache<E>
extends Object

Underlying cache used to back the CaffeineDnsCache. Uses the Caffeine caching library as opposed to Netty's io.netty.resolver.dns.Cache implementation so that we can: 1) Limit the cache's size (and intelligently evict entries) 2) Expose cache stats

Author:

jwhite

Constructor Summary

Constructors

Constructor	Description
CaffeineCache(long maxSize)

Method Summary

Modifier and Type	Method	Description
void	cache(String key, E entry, int ttl)
void	clear()
void	clear(String key)
Collection<E>	get(String key)
protected abstract boolean	shouldReplaceAll(E entry)	Returns true if this entry should replace all other entries that are already cached for the hostname.
long	size()
com.github.benmanes.caffeine.cache.stats.CacheStats	stats()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CaffeineCache

public CaffeineCache(long maxSize)

Method Detail

shouldReplaceAll

protected abstract boolean shouldReplaceAll(E entry)

Returns true if this entry should replace all other entries that are already cached for the hostname.

clear

public void clear()

clear

public void clear(String key)

get

public Collection<E> get(String key)

cache

public void cache(String key,
                  E entry,
                  int ttl)

size

public long size()

stats

public com.github.benmanes.caffeine.cache.stats.CacheStats stats()