本文实例讲述了Python实现的redis分布式锁功能。分享给大家供大家参考，具体如下：
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#!/usr/bin/env python# coding=utf-8import timeimport redisclass RedisLock(object): def __init__(self, key): self.rdcon = redis.Redis(host='', port=6379, password="", db=1) self._lock = 0 self.lock_key = "%s_dynamic_test" % key @staticmethod def get_lock(cls, timeout=10): while cls._lock != 1: timestamp = time.time() + timeout + 1 cls._lock = cls.rdcon.setnx(cls.lock_key, timestamp) if cls._lock == 1 or (time.time() > cls.rdcon.get(cls.lock_key) and time.time() > cls.rdcon.getset(cls.lock_key, timestamp)): print "get lock" break else: time.sleep(0.3) @staticmethod def release(cls): if time.time() < cls.rdcon.get(cls.lock_key): print "release lock" cls.rdcon.delete(cls.lock_key)def deco(cls): def _deco(func): def __deco(*args, **kwargs): print "before %s called [%s]."%(func.__name__, cls) cls.get_lock(cls) try: return func(*args, **kwargs) finally: cls.release(cls) return __deco return _deco@deco(RedisLock("112233"))def myfunc(): print "myfunc() called." time.sleep(20)if __name__ == "__main__": myfunc() |
希望本文所述对大家Python程序设计有所帮助。
原文链接：https://blog.csdn.net/junli_chen/article/details/79228282
