Speaking of web crawlers, I believe everyone is not unfamiliar. Web crawlers can replace people in collecting and sorting data on the Internet. So do you know what are the camouflage methods of web crawlers? Here is a detailed introduction to the relevant information.
1.
For the anti-crawler strategy in the network, most of the anti-crawler strategies in the network judge whether it is a web crawler based on the behavior of a single IP. For example, the anti-crawler detects that a certain IP has a large number of visits, or the frequency of visits. Soon, this IP will be blocked. At this time, we have to choose a proxy IP to break through the anti-crawler mechanism, and more stable and retrograde data crawling.
2. The user agent
of different browsers in the disguised user agent network is also different. Sometimes the anti-crawler will determine whether the IP is a crawler based on the user agent, so we must disguise the user agent and collect the user agents in the network. Choose randomly together, so that you can avoid the anti-crawler mechanism.
3. Pretending to be real users
For anti-crawlers, real users in the network cannot be restricted. The number of visits and access rules of real users are very stable and will not visit multiple times, so we have to pretend to be Real users crawl the data so that the anti-crawler mechanism will not be aware of it. One thing to note is that imitating the behavior of real users will reduce our work efficiency, but we can use proxy IP to multi-threaded and distributed crawling To ensure the efficiency of work.
This is the end of the camouflage method for web crawlers. You can refer to the above methods in your usual crawler work to increase the efficiency of your work.