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README
MIT

Jedis

Release Maven Central Javadocs MIT licensed Integration codecov Discord

What is Jedis?

Jedis is a Java client for Redis designed for performance and ease of use.

Are you looking for a high-level library to handle object mapping? See redis-om-spring!

How do I Redis?

Learn for free at Redis University

Build faster with the Redis Launchpad

Try the Redis Cloud

Dive in developer tutorials

Join the Redis community

Work at Redis

Supported Redis versions

The most recent version of this library supports redis version 5.0, 6.0, 6.2, 7.0 and 7.2.

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 and 6.2 Family of releases 8, 11
>= 4.0 Version 5.0 to current 8, 11, 17
>= 5.0 Version 6.0 to current 8, 11, 17

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:

<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>5.0.0</version>
</dependency>

To use the cutting-edge Jedis, check here.

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

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:

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

With a JedisPool instance, you can use a try-with-resources block to get a connection and run Redis commands.

Here's how to run a single SET command within a try-with-resources block:

try (Jedis jedis = pool.getResource()) {
  jedis.set("clientName", "Jedis");
}

Jedis instances implement most Redis commands. See the Jedis Javadocs 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.

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

Now you can send commands like sending from Jedis.

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

Connecting to a Redis cluster

Jedis lets you connect to Redis Clusters, supporting the Redis Cluster Specification. To do this, you'll need to connect using JedisCluster. See the example below:

Set<HostAndPort> jedisClusterNodes = new HashSet<HostAndPort>();
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:

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

Using Redis modules

Jedis includes support for Redis modules such as RedisJSON and RediSearch.

See the RedisJSON Jedis or RediSearch Jedis 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 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.

Documentation

The Jedis wiki contains several useful articles for using Jedis.

You can also check the latest Jedis Javadocs.

Some specific use-case examples can be found in redis.clients.jedis.examples package 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 or Jedis GitHub Discussions or Jedis mailing list.

Contributing

We'd love your contributions!

Bug reports are always welcome! You can open a bug report on GitHub.

You can also contribute documentation -- or anything to improve Jedis. Please see contribution guideline for more details.

License

Jedis is licensed under the MIT license.

Sponsorship

Redis Logo

MIT License Copyright (c) 2021-2023, Redis, inc. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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