The decision-making power of the policy mode rests with the user. The system itself provides the implementation of different algorithms, adds or deletes algorithms, and encapsulates various algorithms. Therefore, the policy mode is mostly used in the algorithm decision system, and external users only need to decide which algorithm to use.
PS: Many forums have seen beginners ask whether WCF still needs to learn in depth, because they think these technologies may be outdated. Maybe Microsoft will launch a new SOA implementation scheme at that time. Wouldn't it be a waste of time to learn in depth, so they feel that there is no need to learn in depth and just know how to use them. I had the same feeling about this problem before, but now I think that although WCF technology may be replaced, the key to understanding a technology in depth is not to know some more advanced API calls, but to understand its implementation mechanism and way of thinking. Even if the latter technology is replaced, the mechanism behind it is definitely similar. Therefore, if you have a thorough understanding of a technology, you will feel familiar with the new technology and relaxed about it. In addition, after you have a thorough understanding of a technology, you dare to say that you have mastered the technology well during the interview, instead of saying that you use it a lot at ordinary times. Once you ask deeply, you do not know the implementation principle behind it. This is also why I want to write WCF series. I hope this opinion is helpful to some beginners.
Second: Create a subclass
在一个电闪雷鸣、大雨瓢泼的夜晚，相貌凶恶的大马猴和二狗两个坏家伙驾驶汽车飞驰在森林中间的小路上，后座上放着一只他们极为看重神秘箱子。谁知半路突发意外，他们的车子被撞毁，箱子也飞到了森林中央。与此同时，光头强从李老板那里得到一套超先进的伐木工具，他冒着大雨赶赴林间作业，结果遭遇熊大和熊二的阻挠。两只熊抢走了工具箱，光头强急忙追上前去。混乱之中，工具箱和大马猴他们的搞混，被光头强阴差阳错带回家中。第二天一早，光头强突然发现家里多了个小女孩，原来这正是大马猴和二狗两人绑架而来的孩子。
故事发生在一家国际时尚传媒集团的中国杂志总部。生于普通家庭的女主人公周恬刚从北京某大学文学系毕业。《HAN尚》是一本时尚杂志，由“时尚第一主编”韩露亲自操刀运营，周恬因机缘巧合成为主编韩露的初级秘书，在这之后伴随她而来的是以前未曾想象过的残酷职场经历。女主人公通过自己的勤奋和努力，很快完成了“麻雀变凤凰”的过程，经历了一场梦幻般的职场冒险。在这个化茧成蝶的过程中，周恬身上所体现出的执着、奋进和面对何种困难都不放弃的精神鼓舞和感染着每个人，在痛并快乐的奋斗过程中，周恬却发现自己一直努力不放弃的工作并不如想象中的那么美好，而她的爱情也因环境的改变面临着考验……
北京电视台文艺频道2010年重拳推出全新改版的大型综艺娱乐节目《喜来坞》，于2010年3月7日晚黄金时间 喜来坞20：30与广大电视观众见面。该节目是国内首档以明星跨界组合、混搭反串表演为核心创意的综艺娱乐节目，汇集了经典喜剧小品、明星演技竞赛、脱口秀、超级模仿秀等多种节目形式，不仅为综艺娱乐类节目开创了一种全新的模式，也将填补北京电视台周末大型综艺娱乐节目的空白。
王夫人忙点头，吩咐王穷坐下。
桐谷美玲时隔两年主演电影[雪耻女孩]。影片讲诉才色兼备的Miss东大，以失恋为契机，而立志成为第一位女性内阁总理大臣。本片由三木康一郎([植物图鉴])执导，12月23日日本上映。
该剧以汉方医院和电视台为主要背景，讲述有缺陷的人们一起在各自的空隙中闭上眼睛更加幸福的成人童话。
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君臣一番畅谈后，高凡心里轻快许多。
郑氏道：吉利的菜也做了许多。
Sentinel clusters communicate with each other, Communicates the status of the redis node, Make corresponding judgment and process, The subjective offline state and the objective offline state here are more important states, They determine whether to fail over, You can subscribe to the specified channel information, When the server fails, notify the administrator that the client can regard Sentinel as a Redis server that only provides subscription function. You cannot use the PUBLISH command to send information to this server, but you can use the SUBSCRIBE command or the PSUBSCRIBE command to obtain corresponding event reminders by subscribing to a given channel. A channel can receive events with the same name as this channel. For example, a channel named + sdown can receive events that all instances enter the subjective offline (SDOWN) state.
围绕不善社交的高中生奥蒂斯·米尔本展开，他和身为新治疗师的母亲珍住在一起。在第一季中，奥蒂斯和朋友梅芙·威利在学校里开办了一个新诊所，利用他的直觉天赋为同学们提供有关新的建议。在第二季中，晚熟的奥蒂斯必须控制他新发现的新冲动，以便在和女朋友欧拉的相处中取得进展，同时还要处理他与梅芙之间的紧张关系。与此同时，莫戴尔中学因衣原体感染爆发而陷入困境，这更是凸显了在学校开展更好的新教育的必要性，此外，新生入校也将挑战现状。
《星际旅行: 深空九号》（Star Trek: Deep Space Nine,简称「DS9」）是第三代星际旅行系列剧集，从1993年至1999年总共播出了七季，该剧共获得3项艾美奖，9项其他各类奖和42项各类提名。它不以「星舰进取号」及其船员为主角，而以记述围绕在「深空九号」（Deep Space Nine）太空站周遭所发生的事件为主。故事发生在2369 年，深空九号太空站本来是卡达西人占领贝久后所建造的采矿太空站﹝原名「Terok Nor」﹞，一直到资源全被卡达西人掏空后，卡达西人留下了这个采矿站离开，贝久人因为资源不足无法重建自己的家园，只好向星际联邦求助。太空站由星际联邦与贝久星共同管理，并更名为「深空九号」，于是它变成了联邦最偏远的太空站。 在第一集里太空站附近发现一个稳定的虫洞，可以迅速地往返遥远的Gamma象限。这个发现瞬间让这个太空站成为星际联邦最有价值的太空站，也成为进入这个广大未开拓宇宙空间的重要商业中心和军事重地。
Make a template and define the calling order and method in the template. Different subclasses implement methods with their own characteristics, and then access the calling methods of subclasses when accessing externally.
《恋爱操作团》主要讲述了多个"委托人"以"恋爱操作团"为中心达成"心愿"的逗趣故事。
冲出一段。
