Ecosyste.ms: Awesome

An open API service indexing awesome lists of open source software.

Awesome Lists | Featured Topics | Projects

https://github.com/redis/jedis

Redis Java client
https://github.com/redis/jedis

java jedis redis redis-client redis-cluster

Last synced: 6 days ago
JSON representation

Redis Java client

Awesome Lists containing this project

README 

        
# Jedis



[![Release](https://img.shields.io/github/release/redis/jedis.svg?sort=semver)](https://github.com/redis/jedis/releases/latest)

[![Maven Central](https://img.shields.io/maven-central/v/redis.clients/jedis.svg)](https://search.maven.org/artifact/redis.clients/jedis)

[![Javadocs](https://www.javadoc.io/badge/redis.clients/jedis.svg)](https://www.javadoc.io/doc/redis.clients/jedis)

[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE.txt)

[![Integration](https://github.com/redis/jedis/actions/workflows/integration.yml/badge.svg?branch=master)](https://github.com/redis/jedis/actions/workflows/integration.yml)

[![codecov](https://codecov.io/gh/redis/jedis/branch/master/graph/badge.svg?token=pAstxAAjYo)](https://codecov.io/gh/redis/jedis)

[![Discord](https://img.shields.io/discord/697882427875393627?style=flat-square)](https://discord.gg/redis)



## What is Jedis?



Jedis is a Java client for [Redis](https://github.com/redis/redis "Redis") designed for performance and ease of use.



Are you looking for a high-level library to handle object mapping? See [redis-om-spring](https://github.com/redis/redis-om-spring)!



## How do I Redis?



[Learn for free at Redis University](https://university.redis.io/academy/)



[Try the Redis Cloud](https://redis.io/try-free/)



[Dive in developer tutorials](https://redis.io/learn/)



[Join the Redis community](https://redis.io/community/)



[Work at Redis](https://redis.io/careers/jobs/)



## Supported Redis versions



The most recent version of this library supports redis version 

[5.0](https://github.com/redis/redis/blob/5.0/00-RELEASENOTES), 

[6.0](https://github.com/redis/redis/blob/6.0/00-RELEASENOTES), 

[6.2](https://github.com/redis/redis/blob/6.2/00-RELEASENOTES), 

[7.0](https://github.com/redis/redis/blob/7.0/00-RELEASENOTES), 

[7.2](https://github.com/redis/redis/blob/7.2/00-RELEASENOTES) and 

[7.4](https://github.com/redis/redis/blob/7.4/00-RELEASENOTES).



The table below highlights version compatibility of the most-recent library versions and Redis versions. Compatibility means communication features, and Redis command capabilities.



| Jedis version | Supported Redis versions              | JDK Compatibility |

|---------------|---------------------------------------|-------------------|

| 3.9+          | 5.0 to 6.2 Family of releases         | 8, 11             |

| >= 4.0        | Version 5.0 to 7.2 Family of releases | 8, 11, 17         |

| >= 5.0        | Version 6.0 to current                | 8, 11, 17, 21     |

| >= 5.2        | Version 7.2 to current                | 8, 11, 17, 21     |



## Getting started



To get started with Jedis, first add it as a dependency in your Java project. If you're using Maven, that looks like this:



```xml



    redis.clients

    jedis

    5.2.0



```



To use the cutting-edge Jedis, check [here](/docs/jedis-maven.md).



Next, you'll need to connect to Redis. Consider installing a redis-stack docker:



```bash

docker run -p 6379:6379 -it redis/redis-stack:latest

```



For many applications, it's best to use a connection pool. You can instantiate a Jedis connection pool like so:



```java

JedisPool pool = new JedisPool("localhost", 6379);

```



With a `JedisPool` instance, you can use a

[try-with-resources](https://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html)

block to get a connection and run Redis commands.



Here's how to run a single [SET](https://redis.io/commands/set) command within a *try-with-resources* block:



```java

try (Jedis jedis = pool.getResource()) {

  jedis.set("clientName", "Jedis");

}

```



`Jedis` instances implement most Redis commands. See the

[Jedis Javadocs](https://www.javadoc.io/doc/redis.clients/jedis/latest/redis/clients/jedis/Jedis.html)

for the complete list of supported commands.



### Easier way of using connection pool



Using a *try-with-resources* block for each command may be cumbersome, so you may consider using JedisPooled.



```java

JedisPooled jedis = new JedisPooled("localhost", 6379);

```



Now you can send commands like sending from Jedis.



```java

jedis.sadd("planets", "Venus");

```



## Connecting to a Redis cluster



Jedis lets you connect to Redis Clusters, supporting the [Redis Cluster Specification](https://redis.io/topics/cluster-spec).

To do this, you'll need to connect using `JedisCluster`. See the example below:



```java

Set jedisClusterNodes = new HashSet();

jedisClusterNodes.add(new HostAndPort("127.0.0.1", 7379));

jedisClusterNodes.add(new HostAndPort("127.0.0.1", 7380));

JedisCluster jedis = new JedisCluster(jedisClusterNodes);

```



Now you can use the `JedisCluster` instance and send commands like you would with a standard pooled connection:



```java

jedis.sadd("planets", "Mars");

```



## Using Redis modules



Jedis includes support for [Redis modules](https://redis.io/docs/modules/) such as

[RedisJSON](https://redis.io/json/) and [RediSearch](https://redis.io/search/).



See the [RedisJSON Jedis](docs/redisjson.md) or [RediSearch Jedis](docs/redisearch.md) for details.



## Failover



Jedis supports retry and failover for your Redis deployments. This is useful when:



1. You have more than one Redis deployment. This might include two independent Redis servers or two or more Redis databases replicated across multiple [active-active Redis Enterprise](https://redis.io/docs/latest/operate/rs/databases/active-active/) clusters.

2. You want your application to connect to one deployment at a time and to fail over to the next available deployment if the first deployment becomes unavailable.



For the complete failover configuration options and examples, see the [Jedis failover docs](docs/failover.md).



## Documentation



The [Jedis wiki](http://github.com/redis/jedis/wiki) contains several useful articles for using Jedis.



You can also check the [latest Jedis Javadocs](https://www.javadoc.io/doc/redis.clients/jedis/latest/index.html).



Some specific use-case examples can be found in [`redis.clients.jedis.examples`

package](src/test/java/redis/clients/jedis/examples/) of the test source codes.



## Troubleshooting



If you run into trouble or have any questions, we're here to help!



Hit us up on the [Redis Discord Server](http://discord.gg/redis) or 

[Jedis GitHub Discussions](https://github.com/redis/jedis/discussions) or 

[Jedis mailing list](http://groups.google.com/group/jedis_redis).



## Contributing



We'd love your contributions!



Bug reports are always welcome! [You can open a bug report on GitHub](https://github.com/redis/jedis/issues/new).



You can also contribute documentation -- or anything to improve Jedis. Please see

[contribution guideline](https://github.com/redis/jedis/blob/master/.github/CONTRIBUTING.md) for more details.



## License



Jedis is licensed under the [MIT license](https://github.com/redis/jedis/blob/master/LICENSE).



## Sponsorship



[![Redis Logo](redis-logo-full-color-rgb.png)](https://redis.io/)