Gist to reproduce behavior in DATAREDIS-411

RedisConfiguration.java

/*
 * Copyright 2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example;

import javax.sql.DataSource;
import java.sql.SQLException;

import org.h2.Driver;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.jdbc.datasource.SimpleDriverDataSource;
import org.springframework.transaction.PlatformTransactionManager;

/**
 * @author Mark Paluch
 */
@Configuration
public class RedisConfiguration {

    @Bean
    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory cf) {
        RedisTemplate<String, String> redisTemplate = new RedisTemplate<String, String>();
        redisTemplate.setEnableTransactionSupport(true);
        redisTemplate.setConnectionFactory(cf);
        return redisTemplate;
    }

    public @Bean RedisConnectionFactory connectionFactory() {
        JedisConnectionFactory f = new JedisConnectionFactory();
        f.setUsePool(false);
        return f;
    }

     @Bean
    public PlatformTransactionManager transactionManager() throws SQLException {
        return new DataSourceTransactionManager(dataSource());
    }

    @Bean
    public DataSource dataSource() throws SQLException {
        return new SimpleDriverDataSource(new Driver(), "jdbc:h2:mem:test");
    }

}

RedisService.java

/*
 * Copyright 2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

/**
 * @author Mark Paluch
 */
@Component
public class RedisService {

    @Autowired
    private RedisTemplate<String, String> redisTemplate;

    @Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class)
    public void setKeyValue(String key, String value) {
        redisTemplate.opsForValue().set(key, value);
    }

    public String readKeyValueWithoutTransaction(String key) {
        return redisTemplate.opsForValue().get(key);
    }

    @Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class)
    public String readKeyValueWithTransaction(String key) {
        return redisTemplate.opsForValue().get(key);
    }
}

SpringDataRedisPlaygroundApplicationTests.java

/*
 * Copyright 2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.example;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * @author Mark Paluch
 */
@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = SpringDataRedisPlaygroundApplication.class)
public class SpringDataRedisPlaygroundApplicationTests {

    @Autowired
    private RedisService redisService;

    @Test
    public void contextLoads() {

        // set value in a transaction here
        redisService.setKeyValue("akey", "avalue");

        // value is read ok here
        String val = redisService.readKeyValueWithoutTransaction("akey");

        System.out.println(val);

        // value is null here
        val = redisService.readKeyValueWithTransaction("akey");

        System.out.println(val);
    }
}

Produces output:

avalue
null