Feel the cloud, start with elastic computing

Speaking of elastic calculations, no one doubts that Amazon EC2 (elastic Compute Cloud) is the industry leader: Amazon builds its own resilient computing cloud on a platform of large-scale cluster computing within the company, The user can use the Flexible Computing cloud network interface to operate in the cloud computing platform to run each instance (Instance), and the payment method is determined by the user's usage, that is, users only need to use for their own computing platform to pay for the case, after the end of the billing also ended.

It can be seen that the flexible calculation of this way, on the one hand, reduce the small size of software developers to the cluster system maintenance, on the other hand, simple and clear charging method, users need to use the amount of resources, only to pay for this part of the resources. Therefore, in both respects, it is particularly applicable to companies in the start-up period. Aliyun, as the leader of the domestic cloud computing industry, provides a stable elasticity calculation service for the enterprises, among which, the fried egg net, sunflower and Internet fast Bird is the typical representative of applying Aliyun elastic calculation. This article will take you into the three companies, on the basis of sharing their entrepreneurial process, to demonstrate their flexibility in computing practice.

Fried Egg Net: Aliyun, very intimate

Fried eggs, it's easy.

fried eggs, homophonic "simple", in the form of translations and abstracts to Chinese readers to introduce fresh information abroad, its predecessor is the founder of Bang (sein) personal blog. At that time he subscribed to a lot of foreign websites, feeling every day there are many new and interesting things happen, while the domestic site is still reproduced in the moldy Martian text, so he and another founder Yang Guang (OiOi) together, decided to make it a foreign information content sharing site.

Since its inception, fried egg has always been the "creative sharing agreement" authorization to adhere to the original, in order to copy and paste as content source of the Chinese station in the environment gradually stand out. In addition, because of the relaxed and casual way of writing, the atmosphere of the egg-frying station is very enthusiastic and has been recognized and supported by many readers. At present, the fried egg grew to have dozens of part-time author team blog, has been a typical site of similar niche, in Hao123, 360 and other navigation home on the long-term recommendation, in Google Reader, QQ subscriptions also has a cumulative of about 2 million RSS readers.

Aliyun

As an interest team of non-professional professionals, fried eggs are often overwhelmed with host upgrades, server failures, and changing rooms, and sometimes a simple problem can make the site go down all day.

It is a coincidence to come together with Aliyun. About 2 months ago, because of the temporary whim of a hacker, the omelette unfortunately became the target of its DDoS. The measures taken at the time were not to help the omelette find the source of the attack, but to cut the egg network and block its IP from coming online. This makes fried eggs very distressed. Just at this time Luo Mercury learned to Aliyun Hardware firewall, so holding a try mentality, bought in Aliyun one months of trial.

According to Bang, fried eggs now daily traffic is 150,000 independent IP access, about 800,000 PV, and static files and pictures are stored in Third-party services, In this way they consider using the Aliyun minimum 5MB independent bandwidth (which is also much better than the actual speed limit 2MB used in a Beijing BGP room known as 100MB sharing). After a preliminary estimate, the omelette selected the Cloud Server D package and the RDS database medium. Fried eggs in the room before the two servers (a front-end, a database), the server purchase cost of about 20,000 yuan per year, the cost of hosting costs around 15,000 yuan, and the use of Aliyun words do not need to buy a separate database server, just buy RDS services can, so cloud Server + The cost of RDS adds up to about 20,000 yuan, which saves a lot more than before. In addition, because it is a cloud server, so do not worry about hardware failure or to upgrade the memory and dedicated to run the room, and now there are specialized personnel to provide technical support, so see, the cloud services appear more advantages. So fried eggs decisively orders, purchased a scheduled service.

in the process of migrating to Aliyun, configuring the server, the egg-laying network also experienced problems such as the inability to gain access to the extranet IP and the inability of the database connection to ping. This is the first use of the fried eggs Aliyun system, in the background after submitting a work order, very soon in the background to see the Aliyun feedback, the problem solved, Aliyun technology also personally called to explain the situation.

It is worth mentioning that, May 9, fried eggs again suffered a small attack, the website browsing speed was seriously slowed down, the front desk can only show static cache and the background basically paralyzed. Luo Mercury quickly in the Aliyun backstage submitted work order feedback problem, 10 minutes later Aliyun to call, through the PHP process and network status to judge the fried eggs suffered a small-scale cc attack. Because this DDoS traffic is less than Aliyun hardware firewall cleaning, you can only rely on the fried egg server side to find the problem and set up a firewall to solve. At the same time, Aliyun RDS database technicians also found that the fried Egg database engine is MyISAM, does not support multiple concurrent updates, in the case of pressure reading will be stuck to make the fault more serious, so the proposed conversion to the INNODB database engine. Subsequently, the fried Egg network management Paveo to convert the database to InnoDB engine and added iptables rules, will enter traffic down, the site also resumed normal access.

This small attack is a test of omelette, but they are not Zhangsheo this time, because the service provider is not to clear the relationship to drive them away, but to help them solve the problem.

Talk about the use of Aliyun, Luo Mercury concluded: "My personal experience, Aliyun advantage is the stability of bandwidth and thoughtful technical services, and this is the most important to the normal operation of the website." Aliyun and the traditional computer room is the difference between the online backstage and work order system. Perfect online backstage can do some basic management operation, have the problem can submit the work order online. At first we can not directly call the way to find customer service is not accustomed to, but make the employment list found Aliyun feedback very timely, and in response to the general will call to explain, so in the resolution of the problem is very convenient. ”

The benefits of Aliyun to fried eggs, even their readers can really feel: "Our previous server is often overloaded, overload of the tip page is a chicken, readers call it an overloaded chicken." In the last 2 months, readers have said that since the omelette has been moved to the server, there is no overload of the chicken, so miss it. In fact, in the 2 months we moved to Aliyun, I also noticed that Aliyun's website is constantly upgraded, the background interface is more beautiful, features more, and the difference is that you can directly monitor the system condition, and increase the renewal and upgrade management configuration function. ”

(Responsible editor: Lu Guang)