Key elements of a web crawler using HTTP to proxy IP

This article mainly explains "the key elements of web crawlers using HTTP proxy IP". The explanation in the article is simple and clear, and is easy to learn and understand. Please follow the editor's train of thought to study and learn "the key elements of web crawlers using HTTP proxy IP".

1. Limit the access frequency of IP, crawler websites will increasingly use anti-crawler technology, of which the most commonly used is to limit the number of visits to ip.

If the local ip address is blocked by the site, maybe you can try to use the proxy IP to continue crawling.

2. Improve the efficiency of crawling.

It is also possible that when crawling with a single crawler, the crawling speed will be very slow, and the efficiency of a single crawler has no advantage compared with the efficiency of individual manual crawling. To improve the efficiency of crawling, use multiple crawlers, which requires configuring ip for each crawler and rotating IP. At this point, you need to use the proxy IP.

Thank you for your reading, the above is the content of "the key elements of web crawlers using HTTP proxy IP". After the study of this article, I believe you have a deeper understanding of the key elements of web crawlers using HTTP proxy IP, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!