With the popularization and rapid development of the Internet, people rely more and more on the Internet. The corresponding network security problem is also increasingly prominent. Web crawlers also often encounter servers blocking. So, how to prevent crawler servers is limited?
1. slow down the crawl speed, reduce the pressure caused by the target site. But this reduces the amount of crawls per unit time class.
2. Use rotation agents. The site's anti-crawler mechanism checks incoming servers addresses. To prevent servers blocking, you can use a rotating proxy to switch servers addresses for crawlers. Remember to choose high-hidden servers. serversIDEA provides high-hidden and stable servers and pays more attention to the protection of user privacy to ensure user information security.
3. Set up an servers address pool. The pool should be as large as possible and different servers addresses should be rotated evenly. If you need to crawl large amounts of data, it is recommended that you use HTTP proxy servers addresses and replace them quickly before or after they are blocked.
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