Redisson: Redis based In-Memory Data Grid for Java.
State of the Art Redis client

Based on high-performance async and lock-free Java Redis client and Netty framework.

Stable Release Version	Release Date	JDK Version compatibility	`CompletionStage` support	`ProjectReactor` version compatibility
3.9.0	31.10.2018	1.8 - 11	Yes	3.x.x
2.14.0	31.10.2018	1.6 - 11, Android	No	2.0.8

Features

Replicated servers mode (also supports AWS ElastiCache and Azure Redis Cache):
1. automatic master server change discovery
Cluster servers mode (also supports AWS ElastiCache Cluster and Azure Redis Cache):
1. automatic master and slave servers discovery
2. automatic status and topology update
3. automatic slots change discovery
Sentinel servers mode:
1. automatic master, slave and sentinel servers discovery
2. automatic status and topology update
Master with Slave servers mode
Single server mode
Thread-safe implementation
Reactive Streams API
Asynchronous API
Asynchronous connection pool
Lua scripting
Distributed objects
Object holder, Binary stream holder, Geospatial holder, BitSet, AtomicLong, AtomicDouble, PublishSubscribe, Bloom filter, HyperLogLog
Distributed collections
Map, Multimap, Set, List, SortedSet, ScoredSortedSet, LexSortedSet, Queue, Deque, Blocking Queue, Bounded Blocking Queue, Blocking Deque, Delayed Queue, Priority Queue, Priority Deque
Distributed locks and synchronizers
Lock, FairLock, MultiLock, RedLock, ReadWriteLock, Semaphore, PermitExpirableSemaphore, CountDownLatch
Distributed services
Remote service, Live Object service, Executor service, Scheduler service, MapReduce service
Spring Framework
Spring Cache implementation
Spring Transaction API implementation
Spring Data Redis integration
Spring Boot Starter implementation
Hibernate Cache implementation
Transactions API
XA Transaction API implementation
JCache API (JSR-107) implementation
Tomcat Session Manager implementation
Spring Session implementation
Redis pipelining (command batches)
Supports Android platform
Supports auto-reconnection
Supports failed to send command auto-retry
Supports OSGi
Supports SSL
Supports many popular codecs (Jackson JSON, Avro, Smile, CBOR, MsgPack, Kryo, Amazon Ion, FST, LZ4, Snappy and JDK Serialization)
With over 1800 unit tests

Used by

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Success stories

Moving from Hazelcast to Redis / Datorama

Distributed Locking with Redis (Migration from Hazelcast) / ContaAzul

Migrating from Coherence to Redis

Quick start

Maven

<!-- JDK 1.8+ compatible -->
<dependency>
   <groupId>org.redisson</groupId>
   <artifactId>redisson</artifactId>
   <version>3.9.0</version>
</dependency>  

<!-- JDK 1.6+ compatible -->
<dependency>
   <groupId>org.redisson</groupId>
   <artifactId>redisson</artifactId>
   <version>2.14.0</version>
</dependency>

Gradle

// JDK 1.8+ compatible
compile 'org.redisson:redisson:3.9.0'  

// JDK 1.6+ compatible
compile 'org.redisson:redisson:2.14.0'

Java

// 1. Create config object
Config = ...

// 2. Create Redisson instance
RedissonClient redisson = Redisson.create(config);

// 3. Get object you need
RMap<MyKey, MyValue> map = redisson.getMap("myMap");

RLock lock = redisson.getLock("myLock");

RExecutorService executor = redisson.getExecutorService("myExecutorService");

// over 30 different objects and services ...