How to use proxy to grab web data?
2021-10-26 13:46:11854浏览 · 0收藏 · 0评论
There are many kinds of proxies. When capturing and collecting web data, many users are particularly easy to be blocked by the browsing site through the anti cheating mechanism.
In order to avoid this embarrassing situation, many users will use proxies to help break through the restriction of anti cheating. As long as we find the reason for blocking, we can break this situation. The reason why web page data capture is blocked is that an IP sends too many requests to the other party's HTTP, which brings too much pressure to the other party's http. In order to alleviate this pressure, the other HTTP will choose to block this IP. If the program uses multiple IP for multiple requests, it can better capture data.
As we all know, many proxies are not omnipotent. If they are not used properly, they will also be blocked. Among them, there are three types of proxies. One is transparent proxies that are easy to be found and blocked by other websites. Second, ordinary anonymous proxies are vulnerable to restrictions. Third, the advanced anonymous proxy is relatively stable.
When visiting the target site frequently, the proxy is easy to adopt anti strategy. To judge whether the proxy is effective, you must ensure the effectiveness of the connection. The IP response time will also affect the speed of web page response. Therefore, it is recommended to try when selecting an proxy. Many proxies will provide a certain amount of free trials for users to try according to their own business. For example, Roxlabs will give 500MB of traffic after user registration. You can try IP extraction. On the one hand, you can test the stability of the proxy and on the other hand, you can understand the matching degree of your own business.