redis 设置锁

最新推荐文章于 2024-03-30 18:35:49 发布

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最新推荐文章于 2024-03-30 18:35:49 发布

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分类专栏： redis 文章标签： redis 数据库缓存

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redis 设置锁

	public boolean setLock(String lockKey, String value, String expireTime) {
		boolean ret = false;
		String script = "if redis.call('setNx',KEYS[1],ARGV[1])==1 then return redis.call('expire',KEYS[1]," + expireTime + ") else return 0 end";
		RedisScript<Long> redisScript = new DefaultRedisScript(script, Long.class);
		Object result = redisTemplate.execute(redisScript, Collections.singletonList(lockKey), new Object[]{value});
		if (1L == (Long)result) {
			ret = true;
		}

		return ret;
	}

	public boolean releaseLock(String lockKey, String value) {
		String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";
		RedisScript<Long> redisScript = new DefaultRedisScript(script, Long.class);
		Object result = redisTemplate.execute(redisScript, Collections.singletonList(lockKey), new Object[]{value});
		return 1L == (Long)result;
	}