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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

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/**
 * 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.api;

import org.redisson.api.listener.MessageListener;

/**
 *
 * Asynchronous interface for Reliable topic based on Redis Stream object.
 * 

* Dedicated Redis connection is allocated per instance (subscriber) of this object. * Messages are delivered to all listeners attached to the same Redis setup. *

* Requires Redis 5.0.0 and higher. *

* @author Nikita Koksharov * */ public interface RReliableTopicAsync extends RExpirableAsync { /** * Amount of messages stored in Redis Stream object. * * @return amount of messages */ RFuture sizeAsync(); /** * Publish the message to all subscribers of this topic asynchronously. * Each subscriber may have multiple listeners. * * @param message to send * @return number of subscribers that received the message */ RFuture publishAsync(Object message); /** * Subscribes to this topic. * MessageListener.onMessage method is called when any message * is published on this topic. *

* Though messages broadcasted across all topic instances, listener is attached to this topic instance. *

* Watchdog is started when listener was registered. * * @see org.redisson.config.Config#setReliableTopicWatchdogTimeout(long) * * @param - type of message * @param type - type of message * @param listener for messages * @return id of listener attached to this topic instance * @see MessageListener */ RFuture addListenerAsync(Class type, MessageListener listener); /** * Removes the listener by id attached to this topic instance * * @param listenerIds - listener ids * @return void */ RFuture removeListenerAsync(String... listenerIds); /** * Removes all listeners attached to this topic instance */ RFuture removeAllListenersAsync(); /** * Returns amount of subscribers to this topic across all Redisson instances. * Each subscriber may have multiple listeners. * * @return amount of subscribers */ RFuture countSubscribersAsync(); }





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