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

Quick start | Documentation | Javadocs | Changelog | Code examples | FAQs | Report an issue | Redisson PRO

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 ...

Please consider Redisson PRO version for advanced features and support by SLA.

Downloads

Redisson 3.9.0, Redisson node 3.9.0

Redisson 2.14.0, Redisson node 2.14.0

FAQs

Q: I saw a RedisTimeOutException, What does it mean? What shall I do? Can Redisson Team fix it?

Q: I saw a com.fasterxml.jackson.databind.JsonMappingException during deserialization process, can you fix it?

Q: There were too many quotes appeared in the redis-cli console output, how do I fix it?

Q: When do I need to shut down a Redisson instance, at the end of each request or the end of the life of a thread?

Q: In MapCache/SetCache/SpringCache/JCache, I have set an expiry time to an entry, why is it still there when it should be disappeared?

Q: How can I perform Pipelining/Transaction through Redisson?

Q: Is Redisson thread safe? Can I share an instance of it between different threads?

Q: Can I use different encoder/decoders for different tasks?