Package org.apache.druid.client.cache

Class ForegroundCachePopulator

java.lang.Object

org.apache.druid.client.cache.ForegroundCachePopulator

All Implemented Interfaces:

CachePopulator

public class ForegroundCachePopulator
extends Object
implements CachePopulator

CachePopulator implementation that populates a cache on the same thread that is processing the Sequence. Used if config "druid.*.cache.numBackgroundThreads" is 0 (the default).

Constructor Summary

Constructors

Constructor	Description
ForegroundCachePopulator(com.fasterxml.jackson.databind.ObjectMapper objectMapper, CachePopulatorStats cachePopulatorStats, long maxEntrySize)

Method Summary

Modifier and Type	Method	Description
<T, CacheType> Sequence<T>	wrap(Sequence<T> sequence, Function<T,CacheType> cacheFn, Cache cache, Cache.NamedKey cacheKey)

Methods inherited from class java.lang.Object

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

Constructor Details

ForegroundCachePopulator

public ForegroundCachePopulator(com.fasterxml.jackson.databind.ObjectMapper objectMapper,
 CachePopulatorStats cachePopulatorStats,
 long maxEntrySize)

Method Details

wrap

public <T,
CacheType> Sequence<T> wrap(Sequence<T> sequence,
 Function<T,CacheType> cacheFn,
 Cache cache,
 Cache.NamedKey cacheKey)

Specified by:

wrap in interface CachePopulator