spring-data-redis-tools
- RedisTemplate封装工具类
redisTools
- 可视化分布式ID生成器
distributedId
- 可靠分布式锁工具类
distributedLock
(lua脚本实现原子性解决断电问题、valueId避免错误释放问题) - Redis技术总结思维导图
Maven
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
RedisConfiguration
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import redis.clients.jedis.JedisPoolConfig;
/**
* @author wellJay
*/
@Configuration
@EnableCaching
public class RedisConfiguration {
//过期时间一天
private static final int DEFAULT_EXPIRE_TIME = 3600 * 24;
//从配置文件读取redis参数
@Autowired
private CloudConfigProperties cloudConfigProperties;
/**
* jedisPoolConfig config
*/
@Bean
public JedisPoolConfig jedisPoolConfig() {
JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
jedisPoolConfig.setMaxIdle(cloudConfigProperties.getRedis().getMaxIdle());
jedisPoolConfig.setMinIdle(cloudConfigProperties.getRedis().getMinIdle());
jedisPoolConfig.setTestOnBorrow(cloudConfigProperties.getRedis().getTestOnBorrow());
jedisPoolConfig.setTestOnReturn(cloudConfigProperties.getRedis().getTestOnReturn());
return jedisPoolConfig;
}
/**
* JedisConnectionFactory
*/
@Bean
public JedisConnectionFactory jedisConnectionFactory(JedisPoolConfig jedisPoolConfig) {
JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory();
jedisConnectionFactory.setHostName(cloudConfigProperties.getRedis().getHost());
jedisConnectionFactory.setPort(cloudConfigProperties.getRedis().getPort());
jedisConnectionFactory.setPassword(cloudConfigProperties.getRedis().getPassword());
jedisConnectionFactory.setTimeout(cloudConfigProperties.getRedis().getTimeout());
jedisConnectionFactory.setUsePool(true);
jedisConnectionFactory.setPoolConfig(jedisPoolConfig);
return jedisConnectionFactory;
}
/**
* RedisTemplate
* 从执行时间上来看,JdkSerializationRedisSerializer是最高效的(毕竟是JDK原生的),但是是序列化的结果字符串是最长的。
* JSON由于其数据格式的紧凑性,序列化的长度是最小的,时间比前者要多一些。
* 所以个人的选择是倾向使用JacksonJsonRedisSerializer作为POJO的序列器。
*/
@Bean
public RedisTemplate redisTemplate(JedisConnectionFactory jedisConnectionFactory) {
RedisTemplate<?, ?> redisTemplate = new RedisTemplate();
redisTemplate.setConnectionFactory(jedisConnectionFactory);
redisTemplate.setDefaultSerializer(new StringRedisSerializer());
//设置普通value序列化方式
redisTemplate.setValueSerializer(new StringRedisSerializer());
redisTemplate.setHashValueSerializer(new JdkSerializationRedisSerializer());
return redisTemplate;
}
@Bean
public CacheManager cacheManager(RedisTemplate redisTemplate) {
RedisCacheManager redisCacheManager = new RedisCacheManager(redisTemplate);
redisCacheManager.setDefaultExpiration(DEFAULT_EXPIRE_TIME);
return redisCacheManager;
}
}
How To Use
1、注入util方式,适用于复杂的业务处理
@Autowired
private RedisCacheUtil redisCacheUtil;
2、Spring注解方式适用于简单的数据缓存
@Cacheable(value = Constants.RedisKey.XXX_KEY)