A web crawler is an automated program that sends requests to target websites and obtains web page data by simulating user behavior for applications such as data capture and information collection. The web crawler IP refers to the IP used when performing web crawlers, which is similar to our real-life addresses.
When choosing a crawler IP, we need to consider the following factors:
1. Anti-crawler strategy of the target website
Some websites restrict or ban crawlers, such as defense through IP blacklists, UA strings, and verification codes. Therefore, we need to choose a suitable crawler IP to help us better complete the crawler data capture. For example, the range of IP nodes should be enough to make it suitable for us to use the crawler IP. The nodes are all over the world, more like a Users who visit the website normally; or certain websites can only be accessed using IPs in specific areas. For this type, nodes in certain areas are required to be rich.
2. Stable network environment
Crawler programs usually need to frequently send requests to the target website, so a stable and reliable network environment is required to ensure the normal acquisition of data. At the same time, we also need to choose a stable HTTP proxy to avoid problems such as network interruption and proxy failure during the crawling process.
3. High-quality crawler HTTP proxy
Using an HTTP proxy with high anonymity, support for high concurrency, high burst, and high availability of crawlers ensures that we can complete data collection more efficiently during crawler operations.