What proxy IP does a crawler generally use?
Crawlers generally use high-anonymity proxy IPs. Because crawlers require high anonymity, only proxies with high anonymity, security and stability, that is, high-anonymity proxies, are suitable for crawlers. The high-anonymity proxy does not change the client's request, so that it looks to the server like a real client browser is accessing it, and the server will not think that we are using a proxy.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
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Crawlers generally use high-anonymity proxy IPs.
In the process of collecting information, the crawler will issue a large number of requests in a short period of time, occupying the server's bandwidth, affecting normal user access, and in severe cases, causing the website to be paralyzed. In order to ensure normal access for users, the website will enable anti-crawling measures. At this time, the IP of the crawler will be blocked and crawling will no longer be possible.
If you want the crawler to continue working, a simple way is to change the IP of the crawler, and the best way to change the IP is to use a proxy IP to change it.
However, there are many types of proxy IPs, and not all proxy IPs are suitable for crawlers. Because crawlers require high anonymity, only proxies with high anonymity, security and stability, that is, high-anonymity proxies, are suitable for crawlers.
The highly anonymous proxy does not change the client's request, so that it looks to the server like a real client browser is accessing it. At this time, the client's real IP is hidden, and the server will not think we are A proxy is used.
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