springboot2整合redis使用lettuce连接池的方法(解决lettuce连接池无效问题)

下面我来详细讲解一下“springboot2整合redis使用lettuce连接池的方法(解决lettuce连接池无效问题)”的完整攻略。

环境准备

1. JDK8及以上
2. SpringBoot2.0及以上
3. Redis 5.0及以上
4. Lettuce及其连接池

添加依赖

在pom.xml文件中添加以下依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
    <version>2.5.2</version>
</dependency>
<dependency>
    <groupId>io.lettuce</groupId>
    <artifactId>lettuce-core</artifactId>
    <version>6.1.4.RELEASE</version>
</dependency>
<dependency>
    <groupId>io.lettuce</groupId>
    <artifactId>lettuce-core</artifactId>
    <classifier>netty</classifier>
    <version>6.1.4.RELEASE</version>
</dependency>

配置redis连接及其连接池

在application.properties文件中添加以下配置：

# Redis
spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.password=
spring.redis.database=0
spring.redis.timeout=5000
spring.redis.lettuce.pool.max-active=200
spring.redis.lettuce.pool.max-idle=50
spring.redis.lettuce.pool.max-wait=10000
spring.redis.lettuce.pool.min-idle=8

测试

在代码中使用以下方式测试：

@Component
public class RedisUtils {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    public void set(String key, Object value) {
        redisTemplate.opsForValue().set(key, value);
    }

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

测试代码如下：

@SpringBootTest
class RedisUtilsTest {

    @Autowired
    private RedisUtils redisUtils;

    @Test
    void setAndGet() {
        redisUtils.set("test", "value");
        assertEquals("value", redisUtils.get("test"));
    }
}

示例2：使用Lettuce连接池创建Redis连接并操作Redis数据

@Component
public class LettuceRedisUtils {

    private static final Logger logger = LoggerFactory.getLogger(LettuceRedisUtils.class);

    public synchronized static RedisConnection getConnection() {
        RedisURI redisURI = RedisURI.Builder.redis("127.0.0.1", 6379)
                .withPassword("")
                .withDatabase(0)
                .build();
        RedisClient redisClient = RedisClient.create(redisURI);
        StatefulRedisConnection<String, String> connection = redisClient.connect();
        logger.info("LettuceRedisUtils getConnection {}", connection.isOpen());
        return connection;
    }

    public static void closeConnection(RedisConnection connection) {
        if (connection != null) {
            connection.close();
        }
    }

    public static void set(String key, String value) {
        RedisConnection connection = getConnection();
        connection.set(key.getBytes(), value.getBytes());
        closeConnection(connection);
    }

    public static String get(String key) {
        RedisConnection connection = getConnection();
        byte[] bytes = connection.get(key.getBytes());
        closeConnection(connection);
        return new String(bytes);
    }
}

测试代码如下：

@SpringBootTest
class LettuceRedisUtilsTest {

    @Test
    void setAndGet() {
        LettuceRedisUtils.set("test", "value");
        assertEquals("value", LettuceRedisUtils.get("test"));
    }
}

以上就是整合redis使用lettuce连接池的完整攻略，希望对你有所帮助。