Package org.apache.druid.client.cache

Interface Cache

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

CaffeineCache, HybridCache, MapCache, MemcachedCache

public interface Cache
extends Closeable

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	Cache.NamedKey

Method Summary

Modifier and Type	Method	Description
void	close(String namespace)
void	doMonitor(ServiceEmitter emitter)	Custom metrics not covered by CacheStats may be emitted by this method.
byte[]	get(Cache.NamedKey key)
Map<Cache.NamedKey,byte[]>	getBulk(Iterable<Cache.NamedKey> keys)	Resulting map should not contain any null values (i.e.
CacheStats	getStats()
boolean	isLocal()
void	put(Cache.NamedKey key, byte[] value)

Methods inherited from interface java.io.Closeable

close

Method Details

get

@Nullable
byte[] get(Cache.NamedKey key)

put

void put(Cache.NamedKey key,
 byte[] value)

getBulk

Map<Cache.NamedKey,byte[]> getBulk(Iterable<Cache.NamedKey> keys)

Resulting map should not contain any null values (i.e. cache misses should not be included)

Parameters:

keys -

Returns:

close

void close(String namespace)

getStats

CacheStats getStats()

isLocal

boolean isLocal()

doMonitor

void doMonitor(ServiceEmitter emitter)

Custom metrics not covered by CacheStats may be emitted by this method.

Parameters:

emitter - The service emitter to emit on.