Redis锁的简单实现
2021/7/5 19:19:54
本文主要是介绍Redis锁的简单实现,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
RedisLock
@Component public class RedisLock { @Autowired RedisTemplate<String, String> redisTemplate; ValueOperations<String, String> operations; @PostConstruct public void init() { operations = redisTemplate.opsForValue(); } private String lockName = "redisLock"; //尝试加锁,可以根据自己的需求加上过期时间,也可也设置看门狗来对锁进行延时 public boolean tryLock() { return Boolean.TRUE.equals(operations.setIfAbsent(lockName, Thread.currentThread().getName())); } //尝试解锁,只能解自己线程的锁 public boolean tryRelease() { String threadName = operations.get(lockName); if (Thread.currentThread().getName().equals(threadName)) { return Boolean.TRUE.equals(redisTemplate.delete(lockName)); } return false; } }
竞争线程
@Slf4j public class LockThread extends Thread { RedisLock redisLock; public LockThread(RedisLock redisLock) { this.redisLock = redisLock; } @SneakyThrows @Override public void run() { //尝试在3s内获取到锁 for (int i = 0; i < 30; i++) { boolean lock = redisLock.tryLock(); if (lock) { log.info("开始干活"); TimeUnit.SECONDS.sleep(1); log.info("活干完了"); redisLock.tryRelease(); break; } else { log.info("枪锁失败"); TimeUnit.MILLISECONDS.sleep(100); } } } }
测试类
@SpringBootTest public class RedisLockTest { @Autowired RedisLock redisLock; @Test public void test() throws InterruptedException { LockThread lockThread = new LockThread(redisLock); LockThread lockThread2 = new LockThread(redisLock); lockThread.start(); lockThread2.start(); lockThread.join(); lockThread2.join(); } }
2021-07-05 12:03:46.723 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 抢锁失败 2021-07-05 12:03:46.723 INFO 29540 --- [ Thread-2] com.study.redis.LockThread : 开始干活 2021-07-05 12:03:46.825 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 抢锁失败 2021-07-05 12:03:46.936 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 抢锁失败 2021-07-05 12:03:47.043 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 抢锁失败 2021-07-05 12:03:47.153 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 抢锁失败 2021-07-05 12:03:47.261 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 抢锁失败 2021-07-05 12:03:47.363 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 抢锁失败 2021-07-05 12:03:47.480 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 抢锁失败 2021-07-05 12:03:47.588 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 抢锁失败 2021-07-05 12:03:47.696 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 抢锁失败 2021-07-05 12:03:47.727 INFO 29540 --- [ Thread-2] com.study.redis.LockThread : 活干完了 2021-07-05 12:03:47.806 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 开始干活 2021-07-05 12:03:48.818 INFO 29540 --- [ Thread-3] com.study.redis.LockThread : 活干完了
这篇关于Redis锁的简单实现的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!
- 2024-05-31Tiny RDM:你的下一代Redis桌面GUI神器-icode9专业技术文章分享
- 2024-03-21redisinsight-v2
- 2024-02-26Typed property App\Api\Mapper\GamePropsConfigMapper::$apiRedis must not be accessed before initia-icode9专业技术文章分享
- 2024-02-21redisson getlock
- 2024-02-20redis config
- 2024-02-20redis leaderboard
- 2024-01-23缓存选型:Redis or MemCache
- 2024-01-22面试官:Redis持久化能关吗?怎么关?
- 2024-01-21Redis压测工具redis-benchmark-icode9专业技术文章分享
- 2024-01-19这才是你应该了解的Redis数据结构!