For web crawlers, it is quite common to use crawler IP. Crawler IP is divided into two types: static proxy IP and dynamic proxy IP. Today, let's talk about the classification of web crawlers by dynamic proxy IP and what are the advantages of dynamic proxy IP?
Classification and advantages of dynamic proxy IP:
1. What is a dynamic proxy IP?
Dynamic proxy IP means that the proxy IP used when accessing the target server is constantly changing. It plays a role in hiding the user's real IP. Many websites will limit multiple visits to a fixed IP, and some websites restrict information access to users in certain regions. Using dynamic proxy IP, the proxy IP server successfully crosses the network restrictions. When a user accesses an IP multiple times, the proxy IP used by the user keeps changing. Dynamic proxy IP is generally used for web crawlers, etc.
2. Categories of Dynamic Proxy IP
Dynamic proxy IP is divided into: high anonymous dynamic proxy IP, ordinary anonymous dynamic proxy IP according to anonymity
1. Highly anonymous dynamic proxy IP: When a user visits a target website, it is impossible to identify whether the user is using a proxy IP.
2. Ordinary anonymous proxy IP: The anonymity is not high. The target server can recognize that the user is using the proxy IP to access the website and will restrict it.
3. Advantages of Dynamic Proxy IP
1. Protect information privacy: Using dynamic IP proxy can effectively protect users' personal information security and prevent hackers from attacking through IP.
2. Improve the speed of web crawlers: Currently, most websites set restrictions on IP. Using dynamic proxy IP can effectively bypass website restrictions, capture the required network data, and improve the efficiency of web crawlers.
3. Speed up access: When a user visits a website multiple times, the proxy server has a cache function. When the user visits the website again, the cached information can be directly obtained through the server.
4. Download speed is greatly improved: Using dynamic proxy IP can break through the limitation of one IP and one thread when downloading resources from the website, thus speeding up the download speed.
5. Serves as a firewall: Using a proxy server isolates the connection between the intranet and the extranet, serving as a firewall and protecting the security of the LAN.
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