What are the ways to prevent reptiles from being blocked?

This article mainly explains "what are the ways to prevent reptiles from being blocked". Interested friends might as well take a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn "what are the ways to prevent reptiles from being blocked"?

Method 1: IP.

IP is necessary. If conditions permit, it is recommended to use proxy IP.

Deploy a crawler proxy server on a machine with an extranet IP. Your program, replace the proxy server with rotational training to access the website you want to collect. Benefits:

1. The change of program logic is small, and only the agent function is needed.

2. According to the blocking rules of each other's website, you only need to add more agents.

3. Even if the specific IP is blocked, you can go offline to the proxy server directly, and the program logic does not need to be changed.

Method 2: ADSL+ script.

Monitor whether it is blocked, and then do not switch ip.

1. The way to set the query is to call the service interface provided by the website.

Method 3: useragent camouflage and rotation.

1. Use fast ip and sun http and rotation.

2. When dealing with cookies, some websites have relatively loose policies on login, and users are also more relaxed.

Method 4: simulate user behavior as much as possible.

1. UserAgent is often changed.

2. The access time interval is one point, and the access time is set to random number.

3. The order of visiting the page can also be random.

Method 5: avoid sealing.

The collected tasks are grouped according to the IP of the target website, and the number of tasks published per unit time per IP is controlled to avoid sealing. Of course, this question has collected a lot of websites. If only one website is collected, it can only be achieved through multiple external IP.

Method 6: control the pressure of crawling.

1. Consider accessing the target website through an agent.

2. Reduce the crawling frequency, set it for a long time, and access time randomly. Switch UserAgent frequently (simulate browser access)

3, multi-page data, random access, and then grab the data.

4. Changing the user IP is the most direct and effective way!

At this point, I believe you have a deeper understanding of "what methods can prevent reptiles from being blocked". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!