com.google.gerrit.server.cache.CacheBinding Maven / Gradle / Ivy
// Copyright (C) 2009 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.server.cache;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.Weigher;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.time.Duration;
/** Configure a cache declared within a {@link CacheModule} instance. */
public interface CacheBinding {
/** Set the total size of the cache. */
@CanIgnoreReturnValue
CacheBinding maximumWeight(long weight);
/** Set the time an element lives after last write before being expired. */
@CanIgnoreReturnValue
CacheBinding expireAfterWrite(Duration duration);
/** Set the time an element lives after last access before being expired. */
@CanIgnoreReturnValue
CacheBinding expireFromMemoryAfterAccess(Duration duration);
/**
* Set the time that an element will be refreshed after. Elements older than this but younger than
* {@link #expireAfterWrite(Duration)} will still be returned, but on access a task is queued to
* refresh their value asynchronously.
*/
@CanIgnoreReturnValue
CacheBinding refreshAfterWrite(Duration duration);
/** Populate the cache with items from the CacheLoader. */
@CanIgnoreReturnValue
CacheBinding loader(Class> clazz);
/** Algorithm to weigh an object with a method other than the unit weight 1. */
@CanIgnoreReturnValue
CacheBinding weigher(Class> clazz);
/**
* Set the config name to something other than the cache name.
*
* @see CacheDef#configKey()
*/
@CanIgnoreReturnValue
CacheBinding configKey(String configKey);
}