What are the disadvantages of the inferior agent ip of the web page
This article mainly introduces the shortcomings of the inferior agent ip on the web page, which is introduced in great detail and has a certain reference value. Interested friends must finish reading it!
The Web crawler can obtain public information data from the target server, such as competitor's public data and market analysis data. Therefore, every day, there are a lot of crawler software running constantly to obtain valuable data and information.
But if we choose the agent ip is not good enough, choose cheap and inferior ip replacement software, there will be a lot of problems in the process of crawling. For example:
1. The proxy ip is not anonymous enough, and the destination sites identified are limited.
There are many kinds of ip agents, such as transparent agents and ordinary agents. This kind of agent is not anonymous enough to be easily seen through by the other party. Use the proxy ip to select highly anonymous agents, so that high-quality agents can completely hide the local IP and are not easy to find.
2. The authorization cannot be obtained.
A high-quality proxy ip must use an authorized whitelist and cannot access the site if it fails.
3. The extracted ip is not used in time, and the ip is invalid.
Many users misunderstand the proxy ip and think that the proxy ip starts with the use. In fact, the proxy ip is extracted through API. If you cannot use it in time, you will not be able to access the proxy ip website.
4. Close a single agent ip to restrict entry.
Regardless of the type of ip agent, it cannot be 100% valid. It is normal to block ip. As many users know, there is a limit to the frequency of contemporary Li P visits. Some service provider agents have a small ip pool, and many people may use the same ip, so there are certain restrictions before accessing a site.
These are all the contents of this article entitled "what are the shortcomings of the inferior agent ip on the web page?" Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!
