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##Redisson - distributed and scalable Java data structures on top of Redis server. Advanced Redis client
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Use familiar Java data structures with power of [Redis](http://redis.io).
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Based on patched version of [lettuce](https://github.com/wg/lettuce) [Redis](http://redis.io) client and [Netty 4](http://netty.io) framework.
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Redis 2.6+ and JDK 1.6+ compatible
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Read [wiki](https://github.com/mrniko/redisson/wiki) for more Redisson usage details
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Licensed under the Apache License 2.0.
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Features
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================================
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* Cluster servers mode:
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1. automatic master discovery
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2. automatic new master server discovery
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3. automatic slots change discovery
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* Sentinel servers mode:
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1. automatic master and slave servers discovery
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2. automatic new master server discovery
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3. automatic new slave servers discovery
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4. automatic slave servers offline/online discovery
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5. read data using slave servers, write data using master server
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* Master with Slave servers mode: read data using slave servers, write data using master server
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* Single server mode: read and write data using single server
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* Distributed implementation of `java.util.List`
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* Distributed implementation of `java.util.Set`
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* Distributed implementation of `java.util.SortedSet`
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* Distributed implementation of `java.util.Queue`
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* Distributed implementation of `java.util.Deque`
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* Distributed implementation of `java.util.Map`
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* Distributed implementation of `java.util.concurrent.ConcurrentMap`
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* Distributed implementation of reentrant `java.util.concurrent.locks.Lock` with TTL support
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* Distributed alternative to the `java.util.concurrent.atomic.AtomicLong`
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* Distributed alternative to the `java.util.concurrent.CountDownLatch`
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* Distributed publish/subscribe messaging via `org.redisson.core.RTopic`
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* Distributed HyperLogLog via `org.redisson.core.RHyperLogLog`
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* Thread-safe implementation
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* Supports OSGi
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* With over 110 unit tests
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Projects using Redisson
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================================
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Setronica: [setronica.com](http://setronica.com/)
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Monits: [monits.com](http://monits.com/)
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Brookhaven National Laboratory: [bnl.gov](http://bnl.gov/)
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Netflix Dyno client: [dyno] (https://github.com/Netflix/dyno)
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Recent Releases
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================================
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####Please Note: trunk is current development branch.
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####??-Jan-2015 - version 1.2
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Feature - cluster mode support
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Fixed - `RList` iterator race conditions
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Fixed - `RDeque.addFirst` `RDeque.addLast` methods
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Fixed - OSGi support
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####16-Dec-2014 - version 1.1.7 released
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Improvement - `RAtomicLong` optimization
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Fixed - `RMap.fastRemove` and `RMap.getAll` methods
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Fixed - `RTopic` listeners re-subscribing in sentinel mode
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Fixed - `RSet.toArray` and `RSet.iterator` values order
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Fixed - keys iteration in `RMap.getAll`
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Fixed - `RSet` iteration
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Fixed - `RAtomicLong` NPE
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Fixed - infinity loop during master/slave connection acquiring
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Fixed - `RedissonList.addAll` result
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####18-Nov-2014 - version 1.1.6 released
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Feature - `RBucket.exists` and `RBucket.existsAsync` methods added
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Feature - `RMap.addAndGet` method added
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Feature - database index via `database` and operation timeout via `timeout` config params added
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Improvement - `RLock` optimization
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__Breaking api change__ - Redisson now uses `RedissonClient` interface
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Fixed - NPE in `CommandOutput`
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Fixed - unsubscribing during `RTopic.removeListener`
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Fixed - all object names encoding, no more quotes
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Fixed - HashedWheelTimer shutdown
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Fixed - `RLock` race conditions (thanks to jsotuyod and AndrewKolpakov)
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Fixed - `RCountDownLatch` race conditions
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####23-Jul-2014 - version 1.1.5 released
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Feature - operations auto-retry. `retryAttempts` and `retryInterval` params added for each connection type
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Feature - `RMap.filterEntries`, `RMap.getAll`, `RMap.filterKeys`, `RMap.filterValues` methods added
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Feature - `RMap.fastRemove`, `RMap.fastRemoveAsync`, `RMap.fastPut` & `RMap.fastPutAsync` methods added
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Fixed - async operations timeout handling
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Fixed - sorting algorithm used in `RSortedSet`.
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####15-Jul-2014 - version 1.1.4 released
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Feature - new `RLock.lockInterruptibly`, `RLock.tryLock`, `RLock.lock` methods with TTL support
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Fixed - pub/sub connections reattach then slave/master down
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Fixed - turn off connection watchdog then slave/master down
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Fixed - sentinel master switch
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Fixed - slave down connection closing
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####13-Jul-2014 - version 1.1.3 released
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Improvement - RedissonCountDownLatch optimization
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Improvement - RedissonLock optimization
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Fixed - RedissonLock thread-safety
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Fixed - master/slave auth using Sentinel servers
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Fixed - slave down handling using Sentinel servers
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####03-Jul-2014 - version 1.1.2 released
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Improvement - RedissonSet.iterator implemented with sscan
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Improvement - RedissonSortedSet.iterator optimization
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Feature - `RSortedSet.removeAsync`, `RSortedSet.addAsync`, `RSet.removeAsync`, RSet.addAsync methods added
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Feature - slave up/down detection in Sentinel servers connection mode
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Feature - new-slave automatic discovery in Sentinel servers connection mode
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####17-June-2014 - version 1.1.1 released
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Feature - sentinel servers support
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Fixed - connection leak in `RTopic`
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Fixed - setted password not used in single server connection
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####07-June-2014 - version 1.1.0 released
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Feature - master/slave connection management
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Feature - simple set/get object support via `org.redisson.core.RBucket`
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Feature - hyperloglog support via `org.redisson.core.RHyperLogLog`
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Feature - new methods `getAsync`, `putAsync` and `removeAsync` added to `org.redisson.core.RMap`
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Feature - new method `publishAsync` added to `org.redisson.core.RTopic`
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Feature - [Kryo](https://github.com/EsotericSoftware/kryo) codec added (thanks to mathieucarbou)
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__Breaking api change__ - `org.redisson.Config` model changed
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Fixed - score calucaltion algorithm used in `RSortedSet`.
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Fixed - `RMap.put` & `RMap.remove` result consistency fixed.
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Fixed - `RTopic.publish` now returns the number of clients that received the message
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Fixed - reconnection handling (thanks to renzihui)
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Improvement - `org.redisson.core.RTopic` now use lazy apporach for subscribe/unsubscribe
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####04-May-2014 - version 1.0.4 released
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Feature - distributed implementation of `java.util.Deque`
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Feature - some objects implements `org.redisson.core.RExpirable`
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Fixed - JsonJacksonCodec lazy init
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####26-Mar-2014 - version 1.0.3 released
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Fixed - RedissonAtomicLong state format
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Fixed - Long serialization in JsonJacksonCodec
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####05-Feb-2014 - version 1.0.2 released
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Feature - distributed implementation of `java.util.SortedSet`
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Fixed - OSGi compability
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####17-Jan-2014 - version 1.0.1 released
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Improvement - forceUnlock, isLocked, isHeldByCurrentThread and getHoldCount methods added to RLock
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Feature - connection load balancer to use multiple Redis servers
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Feature - published in maven central repo
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####11-Jan-2014 - version 1.0.0 released
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First stable release.
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### Maven
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Include the following to your dependency list:
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<dependency>
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<groupId>org.redisson</groupId>
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<artifactId>redisson</artifactId>
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<version>1.1.7</version>
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</dependency>
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