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The meaning of cache agent is to cache the first run time, and when running the same again, it will be taken directly from the cache. The advantage of this is to avoid repeating the operation function once. If the operation is very complicated and consumes the performance, then using cache objects can improve the performance. We can first understand a simple cache column, which is the common addition and multiplication operations on the Internet. The code is as follows:Liskov Substitution Principle, LSP (Richter Substitution Principle) means that subclasses must replace their parent types. In other words, in the process of software development, after the subclass replaces the parent class, the behavior of the program is the same. Only when the subclass replaces the parent class and the function of the software is not affected can the parent class be truly reused, and the subclass can also add new behaviors to the parent class. In order to look at an example of violation of LSP principles, the specific code is as follows:Monomer mode provides a means to organize code into a logical unit, and the code in this logical unit can be accessed through a single variable.　　胡、苗、范、田四个家族的恩恩怨怨皆起源于一个传说：明末李闯王起义失败后，留下了一个收尽人间财富的宝藏，而通往宝藏的钥匙分别由闯王的四大护法胡、苗、范、田四人保管。由于宝藏的巨大魔力，江湖上、朝廷中从来就没有停止过对这四个家族极其传人的搜捕，甚至这四家传人都在相互明争暗斗，人人都想将宝藏占为己有。周柏豪、袁偉豪兩位充滿正能量的「男神」，由初出道至今都老友鬼鬼，趁有空檔來一次歷險之旅，地點竟然只在香港？本地其實亦有許大自然秘境，露營仰望漫天繁星、煮柴火咖啡、山澗捉魚、瀑布下沖涼，這樣的生活試過未？從野外求生，到豪華Glamping，以及一系列上天下海的活動，兩個愛互窒的大男孩均會親身體驗。只享受「男人的浪漫」似乎好寡，期間不如相約星級知己齊齊Camping，既輕鬆又辛苦地執行港式野外任務！剧情介绍