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This article introduces the relevant knowledge of "how does the crawler agent ip achieve concurrency". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The crawler agent ip implements the process of concurrency:

In the work of the crawler, or on the softnet of some websites, you can see words such as high-frequency request concurrency mentioned in the crawler. Request is the number of new requests. If it is a new request per second, it means how many new HTTP requests can be sent each second.

High concurrency refers to the number of HTTP links per second, which can be used at the same time. For example, if 10 new requests are created per second, the survival time of the proxy ip is 3 minutes, that is, 180 seconds. If the agent ip sends out 10 new requests in the first second, then there will be 10 concurrency at the same time, and if 10 more requests are added in the second second, 10 no will be added at the same time.

If the number of requests in the first second is not turned off, there will be a total of 20 concurrency in the second second. Based on this, it is calculated how many concurrency the proxy ip has in 180 seconds, that is, the maximum of 10 requests is 10 concurrency, i.e. 10 / s * 180/ip survival time = 1800 concurrency.

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