Package growthbook.sdk.java.remoteeval

Class RemoteEvalCache

java.lang.Object

growthbook.sdk.java.remoteeval.RemoteEvalCache

public final class RemoteEvalCache
extends Object

In-memory cache for remote-eval responses.

Backed by a Guava LoadingCache: served fresh within staleTtl, served stale with a background refetch up to cacheTtl, refetched after that. Guava coalesces concurrent reads for the same key into a single fetch.

Constructor Summary

Constructors

Constructor	Description
RemoteEvalCache(RemoteEvalService service, int maximumSize, Duration staleTtl, Duration cacheTtl)
RemoteEvalCache(RemoteEvalService service, int maximumSize, Duration staleTtl, Duration cacheTtl, com.google.common.base.Ticker ticker)

Method Summary

Modifier and Type	Method	Description
RemoteEvalResponse	get(String cacheKey, RequestBodyForRemoteEval payload)
void	invalidateAll()
void	shutdown()

Methods inherited from class java.lang.Object

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

Constructor Details

RemoteEvalCache

public RemoteEvalCache(RemoteEvalService service,
 int maximumSize,
 @Nullable
 Duration staleTtl,
 @Nullable
 Duration cacheTtl)

RemoteEvalCache

public RemoteEvalCache(RemoteEvalService service,
 int maximumSize,
 @Nullable
 Duration staleTtl,
 @Nullable
 Duration cacheTtl,
 @Nullable
 com.google.common.base.Ticker ticker)

Parameters:

service - performs the actual remote-eval POST.

maximumSize - LRU bound on cached responses (values <= 0 disable retention).

staleTtl - when positive, enables stale-while-revalidate: entries older than this are served stale while refreshed in the background. null disables SWR.

cacheTtl - when positive, the hard expiry after which an entry is dropped and refetched. null means no time-based expiry (entries live until evicted or invalidated).

ticker - time source; null uses the system ticker. Injectable for tests.

Method Details

get

public RemoteEvalResponse get(String cacheKey,
 RequestBodyForRemoteEval payload)
                       throws FeatureFetchException

Throws:

FeatureFetchException

invalidateAll

public void invalidateAll()

shutdown

public void shutdown()