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什么是云计算呢？What is the cloud computing? 最开始，人们使用算盘。In the beginning, people use the abacus.
后来，人们用电脑。Later, people use computers.
再后来，人们有了网络。Still later, people have "www".
再后来，中国人口大爆炸，男女比例男的比女的多3700万，这三千多万人没事干，都去上网。于是服务器吃不消了。Still later, China's population explosion, the population of men more than women to 37 million, this more than three thousand people have nothing to do but going online. Then the webhosting tired.
于是人们就发明了NB的技术，用更好更多的服务器。So people invented the "NB" technology, with better and more servers.
再后来，人更多了，于是服务器也更多了。Later, more and more people, and more and more severs.
但事实上这样的效果并不好，过度繁重的结构加大了网站设计和构架的难度，而且越是复杂的系统越是不稳定。有可能一个出问题，这样一个完整的系统就彻底挂掉。如果考虑到系统的崩溃情况，那势必要引入一个更复杂的方案来保证不同的服务器可以做不同的支援。这是一个无解的循环，大量的计算资源被浪费在无限制的互相纠结中，很快到了瓶颈。But in fact this effect is not good, over-heavy structure increased the difficulty of site design and architecture, the complexity of the system became more unstable. There may be such a problem, system to completely hang. If you take into account the situation of the collapse of the system, it is bound to introduce a more complex program to ensure that different servers can do a different support. This is a cycle of no solution, a large number of computing resources are wasted on an unlimited intertwined, the soon will be a bottleneck.
人们想，那我不用这么乱七八糟复杂的系统，我上个极其牛逼的服务器不就好了……而且最牛逼的也还没制造出来.People think, then I do not use such a mess complex systems, a very fast hardware on my server will be good... ... but the "NB" servers have not yet produced.……
于是人们突然想到了一个好办法：把所有计算资源集结起来看成是一个整体(一朵云)，通过并发使用资源完成操作请求。每个操作请求都可以按照一定的规则分割成小片段，分发给不同的机器同时运算，每个机器其实只要做很小的计算286机器都轻松完成的。最后将这些机器的计算结果整合，输出给用户。对用户看来，他其实根本面对的不是许多机器，而是一个似乎真正存在的计算能力巨牛无比的单个服务器，比十台System z10 大型主机揉一起，或是开创了petaflop新纪元的"拂晓号"与"红杉"号还要牛。事实上这个服务器是不存在的，但它拥有着成千上万台服务器的能力。Then people suddenly thought of a good way: gather together all of the computing resources as a whole (a cloud), through the concurrent use of resources to complete the operation request. Request for each operation in accordance with certain rules can be divided into small pieces and distributed to different machines operating simultaneously, each machine in fact do little,but the together is amazing. Finally, integrating the results of these machines, take the result to the user. The user view, he in fact did not face many machines, but seems a single huge cattle immense computing power server real exist , more than ten "System z10" mainframe combine together. In fact, this server does not exist, but it has a capacity of thousands of servers. 下面来看实例。See examples below.
实际上过程没这么简单。哪怕是统计收集资料的过程也会占据可怕的处理时间。这就将云计算的任务进一步划分CPU干什么，处理哪个任务段。这个其实可以由算法安排成自动In fact the process not so simple. Even the statistical data collection process will take a lot of time. This will be further divided cloud CPU doing the task, which task processing segment. In fact, this can be arranged by the algorithm automatically 总之，压榨每一个步骤的潜力，让一个任务被服务器集群们一起上，自然能飞速达成。别忘了，云计算不是弄个两三台质低价廉的服务器就可以达成的。每一朵云背后都有着一大堆异构平台服务器，只有很少的IT大佬家可以集齐全套设备，普通人家没有、也无需有。In short, the potential for squeezing every step, so that a task by the server cluster together, and naturally reached rapidly. Do not forget, two or three sets of cloud computing is not getting a cheaper quality than low-cost server can achieve. Behind every cloud have a lot of heterogeneous platform server, only a few big companies can collect a full set of IT equipment, ordinary people did not, and need not have.
对于普通用户来说云计算是一种方便使用的IT资源，就如自来水一样，拧开龙头就可以用，而无需在自家后院挖个机井，甚至修一个自来水厂。Cloud computing for the average user is an easy to use IT resources, such as tap water, don't have to dig wells in their backyards, or even build a water plant. 当然对这样解释可能还是有点云里雾里的IT大佬就把这个东西，叫做云计算。This explanation may of course still a little mess like cloud,so the IT chiefs put this thing called cloud computing.
来源： http://www./
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