How to use the crawler agent ip pool

This article mainly introduces the crawler agent ip pool how to use, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

1. Before the proxy ip is stored in the database, you need to verify it. The easiest way is to initiate the request whether the status code is 200.

Regular verification is also required after storage. After all, there are times when ip fails.

2. It will be more efficient to send requests in batches with multiple threads.

Of course, pay attention to the frequency, not too fast, so as not to be discovered. Enter the new ip on a regular basis and obtain the proxy regularly; count the number of failures of the proxy ip, delete the ip after reaching a certain number of times, and call the next ip to continue to use. The proxy ip pool requires a certain number of valid proxy ip to support.

3. Use the dynamic ip of ip agent to build your own proxy ip pool and add it to the crawler.

The quality of the ip can be guaranteed because the ip resources of the ip agent are independent and valid.

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