redis

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Getting Started

An easy way to bootstrap setting up a working environment is to create a Spring-based project via start.spring.io or create a Spring project in Spring Tools.

Example Repository

The GitHub spring-data-examples repository hosts several examples that you can download and play around with to get a feel for how the library works.

Hello World

First,you need to set up a running Redis server. Spring Data Redis requires Redis2.6 or above and Spring Data Redis integrates with Lettuce and jedis,two popular open-source Java libraries for Redis.

Now you can create a simple Java application that stores and reads a value to and from Redis.

Create the main application to run, as the following example shows:

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;

public class RedisApplication {

	private static final Log LOG = LogFactory.getLog(RedisApplication.class);

	public static void main(String[] args) {

		LettuceConnectionFactory connectionFactory = new LettuceConnectionFactory();
		connectionFactory.afterPropertiesSet();

		RedisTemplate<String, String> template = new RedisTemplate<>();
		template.setConnectionFactory(connectionFactory);
		template.setDefaultSerializer(StringRedisSerializer.UTF_8);
		template.afterPropertiesSet();

		template.opsForValue().set("foo", "bar");

		LOG.info("Value at foo:" + template.opsForValue().get("foo"));

		connectionFactory.destroy();
	}
}

Even in this simple example,there are few notable things to point out:

• You can create an instance of RedisTemplate(or ReactiveRedisTemplate for reactive usage ) with a RedisConnectionFactory.Connection factories are an abstraction on top of the supported drivers.
• There’s no single way to use Redis as it comes with support for a wide range of data structures such as plain keys(“String”),list,sets,sorted sets,streams,hashes and so on.

Drivers

Connection Modes

Redis Template

Redis Cache

Redis Cluster

Hach Mapping

Pub/Sub Messaging

Redis Stream

Scripting

Redis Transactions

Pipelining

Support Classes