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This article introduces the relevant knowledge of "what factors need to be considered in choosing a http agent". 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!

1. The merchant provides the stability of http.

In view of the fact that we need to use a large number of agents when crawling, if an agent responds very quickly, it can get a response quickly, while the response speed of the agent used in the next request is particularly slow, and it takes 30 seconds to get a response, which is bound to affect the crawling efficiency, so we need to see how stable the agents provided by the merchants are.

2. Http availability: availability refers to the ratio that can be used normally in the extracted proxy http.

If we cannot use this proxy http to request a website, a server, or a timeout, it means that the proxy http is poorly available or even unavailable.

3. The security of http.

The security of http is also a key comparison factor, for example, once the API extracted by the agent is accidentally leaked, others will use our API extraction agent at will. In addition, once someone gets our list of agents by some means, and these agents have no security authentication, this will also cause others to use our agents.

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