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.After understanding the history and classification of design patterns, how should we learn design patterns? Before learning the design pattern, readers must establish a kind of consciousness, that is, the design pattern is not only a method and technology, but also an idea and a methodology. It has nothing to do with the specific language. The main purpose of learning design patterns is to establish object-oriented ideas, program to the interface as much as possible, with low coupling and high cohesion, so that the programs you design can be reused as much as possible. "Specious. Learning design patterns can better understand object-oriented ideas. Design patterns are some design skills and tricks. Don't rise to ideas and methodologies, okay?"你就算赶出来新书，那新书是什么光景谁也不知道。春季档TBS金25将是由铃木福主演的《孩子警察》，是小福初次主剧。剧中他扮演本来是大人但是因为吸入了坏人的某种气体而身体变成孩子的特殊搜查课警察长，共演本田望结、Mariusu叶、胜地凉，本田和叶扮演的也是原来三十多岁但身体变小的刑警，胜地则是扮演新人刑警表面是孩子。救援高手第二季每一个竞争激烈的赛季，不论赛道内外，一级方程式赛车选手、领队主管还有车队老板都过着赛车般分秒必争的快节奏生活。 剧集不光展现瞬息万变的赛道竞速，记录可能发生的车祸和意外——「比赛就像是一次次心脏病发作」——也将跟随车手了解他们在大赛前后的艰苦训练，讲述他们与家人和车队之间的故事。Located on the southeast coast of Hui'an County, bordering the Taiwan Strait, it was built by Zhou Dexing, Jiang Xiahou, in the 20th year of Ming Hongwu (1387 A.D.) to resist Japanese pirates when he was managing coastal defense. In the first year of Qing Long (1567 A.D.), the famous anti-Japanese generals Qi Jiguang and Yu Dayou saw their teachers Chongwu, and the stone carving "Wei Zhen Hai Bang" at the North Gate was handed down to Qi. In the 8th year of Shunzhi in Qing Dynasty (1651 A.D.), Zheng Chenggong stayed here to fight against Qing Dynasty, and there was a legacy of "Horseshoe Stone". In 1988, it was listed as the third batch of national key cultural relics protection units by the State Council. Inside and outside the ancient city, there are more than 20 ancient architectural remains, such as temples and temples, which were built in the Song, Ming and Qing Dynasties respectively and have been repaired and continued to this day. Together with the ancient city, they form a group of historic sites that can be visited. In particular, Longhou Rock in Dazha Mountain, 3 kilometers outside the city, has both Neolithic sites and cliff carvings by literati poets describing the history of the ancient city. Outside the half moon bay, the earth rock carving created by famous painter Hong Shiqing-"Fish Dragon Cave" and the seal cutting calligraphy masterpieces by famous calligraphers Zhu Qizhan, Qian Juntao, Liu Haisu and others are engraved on the strange stone reef. There are also modern stone carving exhibition parks and provincial seaside forest parks under the ancient city. Climbing the ancient city is enough to explore the ancient scenery.
