Shulou(Shulou.com)06/01 Report--

Compared with other CDN service providers, the main advantages of CDN include stable and fast, cost-effective, easy to use, efficient and intelligent. More users will ask about the advantage of stability and speed. Generally speaking, CDN is characterized by sharing the pressure on the origin server, avoiding network congestion, accelerating the distribution of website content in different regions and different scenarios, and improving the speed of resource access. The following is to introduce the working principle of CDN and its impact on network security.

1.CDN

The working principle is to avoid the links on the Internet that will affect the speed and stability of data transmission, and make the access speed faster.

The aim is to let users get the nearest data, improve the speed of accessing Internet and solve the problem of network congestion.

Characteristics

Bandwidth optimization

Cluster anti-ddos*** effectively prevents *.

Remote acceleration speeds up remote access

Local cache acceleration to improve access speed and stability of enterprise sites

2.oracle

Three kinds of backup

1. Import and export backup (export output)

two。 Cold backup

Advantages

Fast backup

Quick archiving

Can be combined with archiving to restore the database to the best

Easy to recover to a certain point in time

Low maintenance and high security

Shortcoming

You must close the database before you can make a backup

In the process of backup, the database is not allowed to do other work.

Cannot restore by table and user

3. Hot backup

Advantages

When backing up, the database can do other work.

You can restore by table or by user

Short backup time

Can reach seconds of recovery to a certain point in time

Shortcoming

Don't make mistakes, or the problems will be very serious.

Backup is not successful and cannot be restored to a certain point in time

3. Virtual network technology

1.vlan

Ip-based mac address-based port-based technology

The broadcast is limited to the scope of each virtual network, thus reducing the transmission of broadcast packets in the whole network and improving the transmission efficiency of the network.

At the same time, the virtual networks can not communicate directly, but must be forwarded through the router, which provides the possibility for advanced security control and enhances the security of the network.

4. network security

Network information security network software security network equipment security

Protect the availability, integrity and confidentiality of data by taking technical and management measures

The network software should be updated to prevent loopholes from leaving traps to * * because of non-updates.

Network information needs to be encrypted

Network equipment

If there is anything else you don't understand, you can find our CDN technical engineer on the official website. CDN technical engineer has more than ten years of experience in the industry, so it will be more detailed and professional than the editor's answer. Official website link www.yisu.com

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