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Question: This is a cruel question.黎章只看了她一眼，立即明白妹妹想什么。For example, in the back-end system, There are tabular data, Each piece of data is preceded by a check box button, When you click the check box button, After obtaining the id, it needs to be passed to the server to send an ajax request. The server needs to record this data, To request, if we send an http request to the server every time we click, For the server, the pressure is relatively high and the network requests are frequent. However, if the real-time data of the system is not very high now, we can collect all ID for a period of time (e.g. 2-3 seconds) through a proxy function and send AJAX requests to the server at one time. Relatively speaking, the network requests are reduced and the server pressure is reduced.This chapter is the last lecture on design patterns. It will talk about the third design pattern-behavioral pattern, with a total of 11 types: policy pattern, template method pattern, observer pattern, iterative sub-pattern, responsibility chain pattern, command pattern, memo pattern, state pattern, visitor pattern, intermediary pattern and interpreter pattern. I have been writing about design patterns for a long time. At last it's halfway through, Writing a blog post is a very time-consuming thing, Because I have to be responsible for the readers, Whether it's graphs, codes, or representations, Everyone hopes to write it as clearly as possible so that readers can understand it. I think both I and the readers hope to see high-quality blog posts come out. Starting from myself, I will stick to it and update it continuously. The continuous motivation comes from the continuous support of readers and friends. I will do my best to write every article well! I hope everyone can give opinions and suggestions continuously and jointly create a perfect blog post!前院也盖了东西厢房，后院是菜园，空地上还种了些果树。在北京的一个公共汽车上，女孩遇到了自己心中的“白马王子”,但是对这个男孩的爱恋一直存在于梦幻之中，而在获悉了这个男孩到上海的一家电脑公司发展之后，女孩从北京追到了上海。在上海却碰到了另外一个男孩。痴情的女孩就这样徘徊于现实和梦幻之中，演出了一场感人的故事……喧嚣的都市大街上，追赶公车上班的新月（郝蕾饰）被小伙子余波（吴奇隆饰）揽在胸前拥上车，刹那间触动了少女情怀，爱上了余波。但余波大学毕业后回上海工作，于是新月也追到了上海，寻找余波。人海茫茫间，无处找寻，诚实友善的余海（苏有朋饰）却对新月一往情深……