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分布式锁,默认是redis实现,可扩展接口增加zk、等其他实现
这个分布式锁采用redis实现,根据CAP理论保证了可用性、分区容错性、和最终一致性。 3. 这把锁是非重入锁,一个线程获得锁之后,在释放锁之前,其他线程无法再次获得锁,只能根据获取锁超时时间和重试策略进行多次尝试获取锁。
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