【DB系列】Redis之Jedis配置

SpringBoot2之后，默认采用Lettuce作为redis的连接客户端，当然我们还是可以强制捡回来，使用我们熟悉的Jedis的，本篇简单介绍下使用Jedis的相关配置

# I. 基本配置

# 1. 依赖

使用Jedis与Lettuce不同的是，需要额外的引入Jedis包的依赖

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>

    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-pool2</artifactId>
    </dependency>

    <dependency>
        <groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
    </dependency>
</dependencies>

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# 2. 配置

redis的相关配置，和前面的差不多，只是线程池的参数稍稍有点区别

spring:
  redis:
    host: 127.0.0.1
    port: 6379
    password:
    database: 0
    jedis:
      pool:
        max-idle: 6
        max-active: 32
        max-wait: 100
        min-idle: 4

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# 3. AutoConfig

与前面不同的是，我们需要定义一个RedisConnectionFactory的bean作为默认的连接工厂，以此来确定底层的连接采用的是Jedis客户端

@Configuration
public class RedisAutoConfig {

    @Bean
    public RedisConnectionFactory redisConnectionFactory(JedisPoolConfig jedisPool,
            RedisStandaloneConfiguration jedisConfig) {
        JedisConnectionFactory connectionFactory = new JedisConnectionFactory(jedisConfig);
        connectionFactory.setPoolConfig(jedisPool);
        return connectionFactory;
    }

    @Configuration
    public static class JedisConf {
        @Value("${spring.redis.host:127.0.0.1}")
        private String host;
        @Value("${spring.redis.port:6379}")
        private Integer port;
        @Value("${spring.redis.password:}")
        private String password;
        @Value("${spring.redis.database:0}")
        private Integer database;

        @Value("${spring.redis.jedis.pool.max-active:8}")
        private Integer maxActive;
        @Value("${spring.redis.jedis.pool.max-idle:8}")
        private Integer maxIdle;
        @Value("${spring.redis.jedis.pool.max-wait:-1}")
        private Long maxWait;
        @Value("${spring.redis.jedis.pool.min-idle:0}")
        private Integer minIdle;

        @Bean
        public JedisPoolConfig jedisPool() {
            JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
            jedisPoolConfig.setMaxIdle(maxIdle);
            jedisPoolConfig.setMaxWaitMillis(maxWait);
            jedisPoolConfig.setMaxTotal(maxActive);
            jedisPoolConfig.setMinIdle(minIdle);
            return jedisPoolConfig;
        }

        @Bean
        public RedisStandaloneConfiguration jedisConfig() {
            RedisStandaloneConfiguration config = new RedisStandaloneConfiguration();
            config.setHostName(host);
            config.setPort(port);
            config.setDatabase(database);
            config.setPassword(RedisPassword.of(password));
            return config;
        }
    }
}