spring boot 微服务 redis集群配置
1.redis 有三种集群模式 主从模式 哨兵模式（Sentinel） Cluster模式
引入redis依赖
yaml
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<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
<groupId>io.lettuce.core</groupId>
<artifactId>lettuce-core</artifactId>
</dependency>
2.主从模式配置 一般实现redis的读写分离 yaml配置如下
java
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spring:
redis:
host: 127.0.0.1
port: 6379
password: your_password
lettuce:
pool:
max-active: 8
max-wait: -1
max-idle: 8
min-idle: 0
shutdown-timeout: 100ms
2.1 在代码配置redis读写分离
java
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@Configuration
public class RedisConfig {
@Value("${spring.redis.host}")
private String redisHost;
@Value("${spring.redis.port}")
private int redisPort;
@Value("${spring.redis.password}")
private String redisPassword;
@Bean
public RedisConnectionFactory masterRedisConnectionFactory() {
RedisStandaloneConfiguration config = new RedisStandaloneConfiguration(redisHost, redisPort);
config.setPassword(RedisPassword.of(redisPassword));
return new LettuceConnectionFactory(config);
}
@Bean
public RedisConnectionFactory slaveRedisConnectionFactory() {
RedisStandaloneConfiguration config = new RedisStandaloneConfiguration("127.0.0.2", 6380);
config.setPassword(RedisPassword.of(redisPassword));
return new LettuceConnectionFactory(config);
}
@Bean
public RedisTemplate<String, Object> masterRedisTemplate(RedisConnectionFactory masterRedisConnectionFactory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
template.setConnectionFactory(masterRedisConnectionFactory);
template.setKeySerializer(new StringRedisSerializer());
template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
return template;
}
@Bean
public RedisTemplate<String, Object> slaveRedisTemplate(RedisConnectionFactory slaveRedisConnectionFactory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
template.setConnectionFactory(slaveRedisConnectionFactory);
template.setKeySerializer(new StringRedisSerializer());
template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
return template;
}
}
3. 哨兵模式（Sentinel）yaml配置
java
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spring:
redis:
cluster:
nodes: 127.0.0.1:7000,127.0.0.1:7001,127.0.0.1:7002
password: your_redis_password
timeout: 5000ms
3.1 在代码中配置
java
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import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisClusterConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
@Configuration
public class RedisConfig {
@Bean
public RedisClusterConfiguration redisClusterConfiguration() {
RedisClusterConfiguration configuration = new RedisClusterConfiguration();
configuration.setClusterNodes(Arrays.asList(
"127.0.0.1:7000", "127.0.0.1:7001", "127.0.0.1:7002"
));
configuration.setPassword("your_redis_password");
return configuration;
}
@Bean
public LettuceConnectionFactory lettuceConnectionFactory(RedisClusterConfiguration redisClusterConfiguration) {
return new LettuceConnectionFactory(redisClusterConfiguration);
}
@Bean
public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory lettuceConnectionFactory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
template.setConnectionFactory(lettuceConnectionFactory);
template.setKeySerializer(new StringRedisSerializer());
template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
template.setHashKeySerializer(new StringRedisSerializer());
template.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
return template;
}
}
4. Cluster模式 yaml 配置如下
yaml
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spring:
redis:
cluster:
nodes: 127.0.0.1:7000,127.0.0.2:7001,127.0.0.3:7002,127.0.0.4:7003,127.0.0.5:7004,127.0.0.6:7005
database: 0
password: your_password
4.1代码配置如下
java
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import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisClusterConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
@Configuration
public class RedisConfig {
@Bean
public RedisClusterConfiguration redisClusterConfiguration() {
RedisClusterConfiguration configuration = new RedisClusterConfiguration();
configuration.setClusterNodes(Arrays.asList(
"127.0.0.1:7000", "127.0.0.1:7001", "127.0.0.1:7002"
));
configuration.setPassword("your_redis_password");
return configuration;
}
@Bean
public LettuceConnectionFactory lettuceConnectionFactory(RedisClusterConfiguration redisClusterConfiguration) {
return new LettuceConnectionFactory(redisClusterConfiguration);
}
@Bean
public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory lettuceConnectionFactory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
template.setConnectionFactory(lettuceConnectionFactory);
template.setKeySerializer(new StringRedisSerializer());
template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
template.setHashKeySerializer(new StringRedisSerializer());
template.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
return template;
}
}
5.如果需要修改redis的键值对 序列化 如下配置
java
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import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONReader;
import com.alibaba.fastjson2.JSONWriter;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;
import java.nio.charset.Charset;
/**
* @author borui
*/
public class FastJson2JsonRedisSerializer<T> implements RedisSerializer<T> {
public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");
private Class<T> clazz;
public FastJson2JsonRedisSerializer(Class<T> clazz) {
super();
this.clazz = clazz;
}
@Override
public byte[] serialize(T t) throws SerializationException {
if (t == null) {
return new byte[0];
}
return JSON.toJSONString(t, JSONWriter.Feature.WriteClassName).getBytes(DEFAULT_CHARSET);
}
@Override
public T deserialize(byte[] bytes) throws SerializationException {
if (bytes == null || bytes.length <= 0) {
return null;
}
String str = new String(bytes, DEFAULT_CHARSET);
return JSON.parseObject(str, clazz, JSONReader.Feature.SupportAutoType);
}
}
@Configuration
@EnableCaching
@AutoConfigureBefore(RedisAutoConfiguration.class)
public class RedisConfig extends CachingConfigurerSupport {
@Bean
@SuppressWarnings(value = { "unchecked", "rawtypes" })
public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory connectionFactory)
{
RedisTemplate<Object, Object> template = new RedisTemplate<>();
template.setConnectionFactory(connectionFactory);
FastJson2JsonRedisSerializer serializer = new FastJson2JsonRedisSerializer(Object.class);
//JdkSerializationRedisSerializer serializer =new JdkSerializationRedisSerializer();
// 使用StringRedisSerializer来序列化和反序列化redis的key值
template.setKeySerializer(new StringRedisSerializer());
template.setValueSerializer(serializer);
// Hash的key也采用StringRedisSerializer的序列化方式
template.setHashKeySerializer(new StringRedisSerializer());
template.setHashValueSerializer((new StringRedisSerializer()));
template.afterPropertiesSet();
return template;
}
}