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This article mainly shows you the "reptile IP blocked solution", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn the "reptile IP blocked solution" this article.

The Internet has completely changed people's work and life, and there are more and more practitioners in the Internet industry. with the advent of big data era, some websites will set up some anti-crawling systems in order to ensure that users can visit normally. A large number of requests made by the crawler in the process of collecting data trigger the anti-crawling mechanism, and the IP number will be blocked. If you want to continue crawling data, you need to switch to a new IP address.

Next, let's talk about several solutions where ip is limited during data collection or crawling:

1. Proxy IP is recommended.

Deploy the crawler proxy server on the machine with the extranet IP; use rotation training to replace the proxy server to access the website you want to collect.

In this way, the logic of your program changes little, you only need the proxy function, and according to the blocking rules of the other party's website, you only need to add different agents. In addition, even if the specific IP is blocked, you can directly take the proxy server offline to OK, the program logic does not need to change.

2. Useragent camouflage and rotation.

Use proxy ip and rotation to handle cookies.

3. Use ADSL+ script.

Monitor whether it is blocked, and then keep switching ip to set the query frequency limit, that is, limit the call to the service interface provided by the site.

4. The basis for blocking IP on a website is generally that there are too many visits to a specific IP per unit time.

When collecting many websites, you can group the collected tasks according to the IP of the target site, and then avoid being blocked by controlling the number of tasks sent out by each IP per unit time.

5. Simulate user behavior as much as possible.

For example, the UserAgent is often changed, the access interval is set to a longer interval, the access time is set to a random number, and the order of visiting pages can also be random.

6. Carry on the pressure control to the crawler.

You can consider using a proxy to visit the target site: reduce the crawl frequency, set a longer time, and use a random number of access times; frequently switch UserAgent (analog browser access); multi-page data, random access and then crawl data; change the user IP, this is the most direct and effective method!

The above is all the contents of this article entitled "the solution to the blocked IP of Crawler". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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