cdn unable to reach servers

Original address: http://www.cnblogs.com/jiekzou/p/4677994.html Server DivisionFor sites with large access, it is necessary to split the parts of the site into separate servers. For example, separate the picture from the Web site. In general, there

Considerations and testing methods for DDOS Security Products in the Internet cloud ecosystem (I)The three elements of DDOS attack security are "confidentiality", "integrity", and "availability". DOS (Denial of Service) targets "availability" of

Server PartitioningFor sites with large access, it is necessary to split the parts of the site into separate servers. For example, separate the picture from the Web site. In general, there are several types of Web site-wide deployment on the

1 seconds to kill business analysis Normal e-business process (1) Inquiry goods, (2) Create Order, (3) deduct inventory, (4) Update order, (5) payment, (6) Seller issue The characteristics of the second kill business (1) Low price, (2) Large

The site is a step-by-step development of a small site to a large site, and the challenge is mainly from huge users, bad security environment, high concurrent access and massive data, any simple business processing, once the need to deal with the

"Actual combat record" introductory Cloud Guardian "combat record" section regularly will share some of the experience and skills in the development of operation and maintenance, hope to pay attention to our friends benefit. This issue is shared by

Site from the beginning of the construction of very few people, the number of users, low concurrency, to the next has tens of millions of users, tens of thousands of levels of high concurrency, between the experience of how the process, small Web

1. Initial phase of the site architectureThe site initially did not have too many people to visit, just need a server more than enough, as shown in Figure 1, then the application, database, files and other resources are on a server. Usually the

features of a large web site system 1, high concurrency, large traffic: need to face high concurrent users, large traffic access.2, High availability: uninterrupted service.3, massive data: Management Lehigh volume data, using a large number of

Features of a large web site system1, high concurrency, large traffic: need to face high concurrent users, large traffic access.2, High availability: uninterrupted service.3, massive data: Management Lehigh volume data, using a large number of