"Let me form the body, let me form the brain!" In a case, a bunch of hardware was noisy, Li Dazui suddenly poke his finger, a burst of electricity passed, and the computer started with the whirr of the fan.
At first, there was only a personal computer, with an operating system and application software installed on the computer, and finishing his own work in an orderly manner, day after day, all in peace.
A few years later, a group of people finally couldn't hold back, and they began to try to exchange information and work together between computers and computers, and the " network" was born!
With the Internet, a group of smart people slapped their heads, raised money to build a computer room, put computers with performance beyond ordinary computers in the room, and provided services specifically for users through the Internet, earning a lot of money . Computers that specialize in providing services and have super performance are called " servers."
With the expansion of scale, the expansion of small networks has become the Internet, and the expansion of small computer rooms has become an IDC data center ( Internet Data Center ). The industry has followed suit one after another, countless data centers have joined the Internet, and the " cloud" was born! !
Countless smart programmers deploy countless applications on the cloud for everyone to access and use, integrate resources through a large amount of code, and let countless servers work together.
The power of cooperation is powerful. The cooperation of countless servers can even allow you to experience 10 trillion computing power per second. With such a powerful computing power, you can simulate nuclear explosions, predict climate change, and market development trends. This is cloud computing! !
A complete cloud computing system often has the characteristics of super large capacity, super high concurrency (simultaneous access), super fast speed, and super security .
We usually hear about Tencent Cloud, Alibaba Cloud, Huawei Cloud and other major cloud service providers. To put it bluntly, they are all doing such things. There are usually three layers of cloud services for people to choose:
The first layer: Infrastructure-as-a-Service, you don’t need to build your own computer room, don’t worry about the network, don’t worry about data storage, all CPU, memory, storage, network and other basic computing resources will be provided After that, users can install the operating system and software on it.
The second layer: Platform-as-a-Service (Platform-as-a-Service). At this time, you can be lazy. The middleware for developers is provided by cloud service providers . Programmers only need to pay attention to their own development logic. To manage the server, you don't need to care about the form of software and data. Representative examples are databases and message queues.
The third layer: Software-as-a-Service (Software-as-a-Service). This is the laziest way and the most favorite way; the software development, management, and deployment are all handed over to the cloud service provider. You no longer need to care about any technical issues, you can use it out of the box, like QQ mailbox, cloud Discs, portal sites of government schools, etc.
and so!
When you need to use a software, you don't need to go to the computer city, open the application store, and it will be downloaded, you only need to pay for it;
When you want to read a newspaper, you don't need to go to the newsstand, just open the news software and read it directly;
When you want to read a book, you don't need to go to the bookstore, just open the reading software and just read it directly;
When you want to listen to music, you don't have to go to the audiovisual store to look for CDs, open the music software, and just listen directly;
Cloud computing , like setting up different water companies in different regions, without geographical restrictions, excellent cloud software service providers, providing software services to every corner of the world-just like the cloud in the sky, no matter where you are, As long as you look up, you can see it!
So cloud computing is here, are you ready?