Cache (druid-server 29.0.1 API)

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

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`close(String namespace)`
`void`	`doMonitor(org.apache.druid.java.util.emitter.service.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 Detail

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(org.apache.druid.java.util.emitter.service.ServiceEmitter emitter)
```
Custom metrics not covered by CacheStats may be emitted by this method.

Parameters:

emitter - The service emitter to emit on.