JasonBen - 2024 6 26The Internet involves a huge amount of data collection, and the network information resources are rich and complicated and want to find the information you need to spend more time. To solve this problem, web crawler technology has come into being, and its main role is to crawl massive amounts of Internet information, capture effective information, and store it. However, there are many benefits to using the right IP proxy pool when doing crawler business. Many people choose to build a free proxy pool to meet the needs of web crawlers.
What is the free proxy pool?
A free proxy pool is a service platform that provides free proxy IP addresses. It is usually used in application scenarios that require a large number of IP addresses, such as crawling and data mining. In applications such as web crawlers, the use of proxy pools can effectively avoid the risk of being unable to access the public data IP by the target website, and can also improve the access speed and success rate of data fetching.
Why should Web crawlers use free proxy pools?
When we carry out web crawlers, we usually do it on our computers, so in the process of data collection, IP addresses are often monitored and blocked, and then the collection process is interrupted, resulting in a low amount of data, and the analysis conclusion is one-sided.
The server determines whether a frequent request is sent from the same IP address, and for the IP with too high access speed or too many access times, the IP will have anti-crawler-restricted access. The general solution is to access the target URL by changing the IP address, thus reducing the risk of IP blocking. That is, build IP pools for data collection.
How to build an IP proxy pool
To construct an IP proxy pool, we must first obtain proxy IP information, which includes two methods: free and paid. The purchased proxy IP is better than the free one in terms of the availability of proxy IP.
There are also many free proxy IP sites on the network that want to build a free IP proxy pool, which can be collected from a website that provides free proxies. Since adoption is a free proxy IP, it is also necessary to test the availability of these proxy IPs to determine if it is effective. Finally, you only need to save the available proxy IP in other forms such as files or databases, and then read and judge whether the proxy IP is currently available when you need to use it.
In summary, building an IP proxy pool can improve the efficiency and reliability of crawling and help everyone complete various crawling tasks. It is worth noting that there are certain risks in building a free proxy pool, the availability and stability of free proxy IP are low, and most of the IP obtained from free proxy websites cannot be used. It is recommended to choose a paid proxy service, to improve the anonymity and high availability of web crawlers.
