Redisson实现分布式锁案例

Redisson实现分布式锁案例

1. 引入依赖

<dependency><groupId>org.redisson</groupId><artifactId>redisson-spring-boot-starter</artifactId><version>3.23.2</version>
</dependency>

2. 创建Redisson配置类

@Configuration
public class RedissonConfig {@Beanpublic RedissonClient redissonClient() {Config config = new Config();config.useSingleServer().setAddress("redis://127.0.0.1:6379");// 如果有密码需要设置密码return Redisson.create(config);}
}

3. 使用分布式锁

@RestController
public class LockController {@Resourceprivate RedissonClient redissonClient;@RequestMapping("/lock")public String lockResource() throws InterruptedException {String lockKey = "myLock";// 获取锁RLock lock = redissonClient.getLock(lockKey);try {// 超时时间 20s, [tryLock 获取成功才需要释放锁,获取失败不需要释放锁]boolean isLocked = lock.tryLock(20, TimeUnit.SECONDS);if(isLocked) {// 成功获取到锁try {TimeUnit.SECONDS.sleep(5);return "成功获取到锁，并执行业务代码";} catch (InterruptedException e) {e.printStackTrace();} finally {// 释放锁lock.unlock();}} else {// 获取锁失败return "获取锁失败";}} catch (InterruptedException e) {e.printStackTrace();}return "获取锁成功";}
}```