At present, when we talk about big data, we will mention web crawlers, and when we talk about web crawlers, we will definitely mention IP proxies. Therefore, many people subconsciously have an idea that if the proxy IP is left, the crawler will be like a disabled person without feet and can't crawl. Is this true?

Work?

Why do crawlers need proxy IPs?

Usually, in order to ensure the normal operation of their own websites, website administrators will set various strategies, such as only a few visits a day on the IP, the number of visits must not exceed a certain number, and the access behavior must not be anti-human. In order to obtain the huge amount of information they need, crawler engineers will inevitably trigger these strategies, and then the IP will be restricted. This is why crawlers need proxy IPs.

Do you need a proxy IP to crawl only a little bit?

So, do all crawlers need proxy IPs? This is not the case. As long as the anti-crawling strategy of the target website is not triggered, there is no need for a proxy IP. Some small crawlers have a small task volume, which is similar to normal human visits, so naturally the IP will not be restricted. Some people will say that there is no such crawler, what is the point of such a crawler? ! Of course, the purpose of small crawlers is to automatically obtain information, thus saving manpower and time.

Do you need a proxy IP if you don't pursue speed?

Some crawler tasks are slightly larger, but if you don't pursue speed, you can split them up and throw them in the server to crawl a little every day; or throw them in many servers to work at the same time and complete the work after a month. This will not trigger the anti-crawling strategy of the target website, so there is no need for a proxy IP.

In short, not all crawlers can't work without a proxy IP. Some small crawlers don't need a proxy IP, and some crawlers that don't seek speed don't need a proxy IP either. However, if the crawler has a large workload and needs to be completed on time, you must ask for a proxy IP to help. The number of proxy IPs required for crawlers with different workloads is also different.