Talk about dynamic proxy IP-What is dynamic IP proxy

Friends who have crawler experience, have you ever encountered IP speed restrictions when crawling data from well-known websites? Today, let’s talk about what dynamic proxy IP is and how to implement a simple crawler.

• What is a dynamic proxy IP
• Benefits of Dynamic Proxy
• Dynamic proxy IP categories
• Apply for proxy ip
• Use a proxy IP
• Use proxy ip to easily crawl Google data

1. What is a dynamic proxy IP?

Dynamic proxy IP refers to the proxy IP of the target website server that is constantly changing. It can hide the real IP, making it impossible to track each other and successfully escape the restrictions of the other party; through the proxy server, some external visitors, especially important information on the website, can be restricted; many local websites will restrict access from non-local IPs, and dynamic proxy IP can break through the restrictions.

Dynamic proxy IP is generally used for user crawlers, etc.

2. Benefits of Dynamic Proxy IP

• Speed ​​up access: Generally, after you visit a website, the proxy server has a cache function. It will cache the information you browse the website, so when you visit the website again, this information can be directly obtained from the proxy service.
• Protect privacy information: High-quality proxy IP is good for network security. It can protect your computer from viruses, especially for enterprises, it can effectively protect the internal information of the enterprise and prevent hacker attacks.
• Improve download speed: Some websites provide download resources that are limited to one thread per IP. In this case, you can use a proxy IP to break through the download limit.
• As a firewall: The proxy server can protect the security of the LAN and act as a firewall. It isolates the internal network from the external network, provides the function of monitoring the network and recording the transmission information, and strengthens the security of the LAN. The proxy can also be used to limit the blocking of IP addresses and prohibit users from browsing certain pages.
• Improve the crawler speed: Because many websites restrict IP to restrict crawlers, using dynamic proxy IP can bypass the restrictions of the target website and better capture network data. For example, you can change the IP address at a customized time to improve crawler efficiency.
• Manage network resources: limit some shared resources to users in specific regions, and maintain the regionality of resources

3. Types of dynamic proxy IP

According to the degree of anonymity , proxy IPs are divided into three types: high anonymous proxy IPs, ordinary anonymous proxy IPs, and transparent proxy IPs .

• High Anonymity Proxy IP: The most anonymous proxy IP. Generally speaking, the target website server cannot recognize that the user is using a proxy.
• Ordinary anonymous proxy IP: The anonymity is low. The target website server can find that the user is using the proxy IP to access and often restrict access;
• Transparent proxy IP: cannot be accessed anonymously, will directly expose the real IP of the user terminal, and there are certain risks.

According to the time limit , proxy IP can be divided into static proxy IP and dynamic proxy IP.

• Static proxy IP: a fixed IP address is assigned to you, which is fixed every time.
• Dynamic proxy IP: It has a time limit and will become invalid after the time limit. Dynamic proxy IP can be divided into long-term proxy IP and short-term proxy IP. The time limit of short-term proxy IP generally ranges from a few seconds to a few minutes; the time limit of long-term proxy IP generally ranges from a few minutes to a few days.

According to the protocol type, proxy IP is divided into http(s) proxy IP and socks5 proxy IP.

• http(s) proxy IP supports both http and https protocols
• The socks5 proxy simply transmits data and has no requirements for the protocol type.