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That said, it's important to recognize that locking in itself is not bad. It does, in fact, serve an important purpose to ensure that applications properly and orderly consume or produce data. The key challenge is with the original manual implementation of it using APIs like getReader() and releaseLock(). With the arrival of automatic lock and reader management with async iterables, dealing with locks from the users point of view became a lot easier.
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63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54
example SNA network might look like this: An S/370 computer running CICS (or