FAQ

CDN mainly improves site speed and performance by caching content at edge nodes to shorten the distance between users and websites. Some content, when you do not want to be stolen from other places, such as some content that has copyright or does not want to generate more traffic due to theft, is the core issue that most content owners consider. This is known as the security chain. In practice, the commonly used anti-theft chain methods for CDN include IP black-and-white list, referer, timestamp, and central authentication for anti-theft chain. Below is a brief introduction to these methods of anti-theft chains: 1、 IP black and white list This is relatively simple. Directly configure the requester’s IP black and white list. After setting the blacklist, all users except the blacklist can access it; Conversely, if a whitelist is set, only users on the whitelist can access it. This method is directly…

Server Load Balancing (SLB) refers to a network service device that we use to distribute traffic to multiple cloud servers. It can quickly improve the external service capability of the application system through traffic distribution; Hide the actual service port to enhance the security of the internal system; Improve the reliability of application systems by eliminating single points of service failure. The load balancing service virtualizes multiple cloud server resources located in the same region into a high-performance and highly available application service pool by setting a virtual service address (VIP); Distribute network requests from clients to the cloud server pool according to the method specified by the application. The load balancing service checks the health status of cloud server instances in the cloud server pool and automatically isolates instances with abnormal status, thereby solving single point problems with cloud servers and improving the overall service capability of the application….

Lock is a mechanism for computers to coordinate multiple processes or threads to concurrently access a certain resource. It is a key feature that distinguishes database systems from file systems. It can ensure that users can read and modify data in a consistent manner. In databases, in addition to traditional contention for computing resources (CPU, RAM, and I/O), data is also a resource shared by many users. How to ensure the consistency and effectiveness of data concurrent access is a problem that must be solved in the existing database. Lock conflict is also an important factor that affects the performance of database concurrent access. From this perspective, locks are particularly important and more complex for databases. Preventing update loss cannot be solved solely by the database transaction controller, but requires the application to apply necessary locks to the data to be updated. MySQL uses many such locking mechanisms, such as…

Driven by markets such as video, e-commerce, and games, CDN has become an indispensable part of China’s Internet infrastructure, and the industry has entered a stage of rapid development. With the continuous development and progress of technologies such as artificial intelligence, big data, cloud computing, the Internet of Things, virtual reality, and blockchain, CDN will become an important network platform supporting the implementation and application of these technologies, which will drive the further expansion of the CDN market. At the same time, the 5G era is approaching, and the application of emerging communication technologies will also drive the market’s demand for CDN. China’s CDN industry will enter a new stage of development. In 2022, China’s CDN market will reach 135.86 billion yuan, with broad prospects for development. Moreover, network security is a prerequisite for the development of websites, and frequent network layer DDoS attacks and application layer DDoS attacks occur…

The vast majority of ordinary people have access to reports about content delivery networks (CDNs), almost all due to downtime events at major factories. But what everyone doesn’t know is that downtime isn’t the main reason many companies adopt converged CDNs. In fact, according to market research conducted by well-known foreign media, the most common reasons why customers turn to adopting a converged CDN architecture are to reduce streaming media costs, improve quality of experience (QoE), and create an adaptive infrastructure to address local bandwidth issues. Although almost all large content companies adopt the integrated CDN model, many small and medium-sized companies have not yet turned to content delivery strategies based on integrated CDN. 1、 Most companies tend to choose to integrate CDN Using converged CDNs has become the most popular option in today’s streaming media market. If you have not yet adopted a converged CDN to achieve the benefits…

CC is mainly used to attack pages. Everyone has the experience that when visiting a forum, if the forum is relatively large and there are many visitors, the speed of opening the page will be relatively slow! The more people visit, the more pages on the forum, the larger the database, the higher the frequency of access, and the considerable amount of system resources consumed. “A static page does not require much resources from the server, and it can even be said that it can be read directly from memory and sent to you. However, forums are different. Each time I view a post, the system needs to go to the database to determine whether I have permission to read the post. If so, it reads the content in the post and displays it. Here, at least two database accesses have been made. If the database size is 200 MB,”,…

With the increase in Internet bandwidth and the continuous release of various DDOS hacker tools, the implementation of DDOS denial of service attacks is becoming increasingly easy, and DDOS attacks are on the rise. Due to various factors such as commercial competition, retaliation, and online extortion, many network service providers such as IDC hosting rooms, commercial sites, game servers, and chat networks have been plagued by DDOS attacks for a long time. This has been followed by a series of issues such as customer complaints, involvement with virtual host users, legal disputes, and business losses. Therefore, resolving the issue of DDOS attacks has become a top priority for network service providers. 1、 What is DDOS? DDOS is an abbreviation for Distributed Denial of Service in English, meaning “distributed denial of service”. So what is a denial of service? It can be understood that any behavior that can cause legitimate users…

1、System blue screen, frequent crashes, restarts, slow response speed The hardware structure and operating system of the server are very similar to those of our ordinary computers. Therefore, just like our computers, they may be infected with viruses, crash, blue screen, restart, and other failures due to system vulnerabilities, software conflicts, and hardware failures. They may also be unresponsive due to excessive garbage cache information. 2、Remote Desktop connections exceed the maximum number of connections Since the server defaults to allowing 2 connections, if you forget to log off after logging in and close the remote desktop directly, the server recognizes that this login is still left on the server side. The most common occurrence of this situation is to restart the server. However, if it is during peak hours, the losses caused by restarting the server are obvious. At this point, you can use the mstsc/console command to forcibly log…

1、 Regular backup of website data: Regular backup of website data can be used to recover the attacked website, even if the website is attacked or accidentally deleted some website information, it can be recovered at any time. For this website operation and maintenance, website backup is the absolute principle. 2、 Website program system update: Website programs and server systems are regularly updated with the versions and patches used, which can eliminate some existing security vulnerabilities and prevent potential opportunities for hackers. 3、 Regularly check and kill website viruses: Regularly check and kill website viruses can prevent hackers from further breaking or stealing website data, and can also timely delete the leaked files of the website backdoor. 4、 Website file permission setting: Set reasonable permissions for website server files, such as canceling write or execute permissions for some important files executing programs, to prevent hackers from tampering with website data….