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

Quick start | Documentation | Javadocs | Changelog | Code examples | FAQs | Support chat | 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
3.7.3	27.06.2018	1.8, 1.9, 1.10+	Yes	3.1.x
2.12.3	27.06.2018	1.6, 1.7, 1.8, 1.9, 1.10, 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
• 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

                       

                   

               

       
   

Success stories

Moving from Hazelcast to Redis / Datorama

Distributed Locking with Redis (Migration from Hazelcast) / ContaAzul

Migrating from Coherence to Redis / RCI

Quick start

Maven

<!-- JDK 1.8+ compatible -->
<dependency>
   <groupId>org.redisson</groupId>
   <artifactId>redisson</artifactId>
   <version>3.7.3</version>
</dependency>  

<!-- JDK 1.6+ compatible -->
<dependency>
   <groupId>org.redisson</groupId>
   <artifactId>redisson</artifactId>
   <version>2.12.3</version>
</dependency>

Gradle

// JDK 1.8+ compatible
compile 'org.redisson:redisson:3.7.3'  

// JDK 1.6+ compatible
compile 'org.redisson:redisson:2.12.3'

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 ...

Downloads

Redisson 3.7.3, Redisson node 3.7.3

Redisson 2.12.3, Redisson node 2.12.3

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?

Supported by

YourKit is kindly supporting this open source project with its full-featured Java Profiler. YourKit, LLC is the creator of innovative and intelligent tools for profiling Java and .NET applications. Take a look at YourKit's leading software products: YourKit Java Profiler and YourKit .NET Profiler.