org.redisson.eviction.EvictionTask Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of redisson-all Show documentation
Show all versions of redisson-all Show documentation
Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
/**
* Copyright (c) 2013-2024 Nikita Koksharov
*
* 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 org.redisson.eviction;
import io.netty.util.Timeout;
import io.netty.util.TimerTask;
import org.redisson.api.RFuture;
import org.redisson.command.CommandAsyncExecutor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Deque;
import java.util.LinkedList;
import java.util.concurrent.TimeUnit;
/**
*
* @author Nikita Koksharov
*
*/
abstract class EvictionTask implements TimerTask {
private final Logger log = LoggerFactory.getLogger(getClass());
final Deque sizeHistory = new LinkedList<>();
final int minDelay;
final int maxDelay;
final int keysLimit;
int delay = 5;
final CommandAsyncExecutor executor;
volatile Timeout timeout;
EvictionTask(CommandAsyncExecutor executor) {
super();
this.executor = executor;
this.minDelay = executor.getServiceManager().getCfg().getMinCleanUpDelay();
this.maxDelay = executor.getServiceManager().getCfg().getMaxCleanUpDelay();
this.keysLimit = executor.getServiceManager().getCfg().getCleanUpKeysAmount();
}
public void schedule() {
timeout = executor.getServiceManager().newTimeout(this, delay, TimeUnit.SECONDS);
}
public void cancel() {
timeout.cancel();
}
abstract RFuture execute();
abstract String getName();
@Override
public void run(Timeout timeout) {
if (executor.getServiceManager().isShuttingDown()) {
return;
}
RFuture future = execute();
future.whenComplete((size, e) -> {
if (e != null) {
log.error("Unable to evict elements for '{}'", getName(), e);
schedule();
return;
}
log.debug("{} elements evicted. Object name: {}", size, getName());
if (size == -1) {
schedule();
return;
}
if (sizeHistory.size() == 2) {
if (sizeHistory.peekFirst() > sizeHistory.peekLast()
&& sizeHistory.peekLast() > size) {
delay = Math.min(maxDelay, (int) (delay*1.5));
}
// if (sizeHistory.peekFirst() < sizeHistory.peekLast()
// && sizeHistory.peekLast() < size) {
// prevDelay = Math.max(minDelay, prevDelay/2);
// }
if (sizeHistory.peekFirst().intValue() == sizeHistory.peekLast()
&& sizeHistory.peekLast().intValue() == size) {
if (size >= keysLimit) {
delay = Math.max(minDelay, delay/4);
}
if (size == 0) {
delay = Math.min(maxDelay, (int) (delay*1.5));
}
}
sizeHistory.pollFirst();
}
sizeHistory.add(size);
schedule();
});
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy