When learning Python crawlers, I often encounter situations where crawling of target websites is restricted. High-intensity and high-efficiency crawling of webpage information often puts huge pressure on the web server. Therefore, if the same IP repeatedly crawls the same webpage, it is very likely to be blocked. At this time, you need to use the proxy IP to complete the crawling work, so how to choose the python crawler proxy?
The proxy IPs on the market are mixed. There are free, paid, self-scanning, self-built IP pools, etc. The following problems are often encountered when choosing a crawler proxy:
1. The IP availability rate is low. Some products are IP scanned from the Internet, and the IP duration and quality cannot be guaranteed.
2. The IP pool is exaggerated, boasting that it has several million, but in fact there are only a hundred thousand to two or three hundred thousand. Because of repeated use, the availability of IP is not high. Some people may have questions, what should these businesses do when they encounter large customers? You can only find a larger IP agency provider to seek cooperation and earn the difference. As an end customer, he was squeezed into wool.
3. Low cost performance. Although some prices are very low, the availability rate is also very low, and problems such as instability and disconnection are often encountered. In fact, the time cost we pay is much higher than the money cost.
4. There is no resources. If the first type still has its own IP reserve, engineers may solve problems when it comes to problems. Then this kind of pure agent is even more insecure. There is no cost to earn the difference, and there is also the risk of taking the money and running away. If you encounter problems, you can only find a superior agent IP provider to find a solution. Suppliers such as Tianqi have real million IPs, are maintained by professional operation and maintenance teams, and after-sales technicians can guarantee the service.
So how can we avoid these pits and choose reliable suppliers?
Look for a free test that can simulate usage. For example, if I use 100W a day, you can give me 100W to test. The test is still very stable. Try to cooperate with source manufacturers such as Tianqi. The price negotiated in this way is the most advantageous. You can sign a contract and go to the public account, and the transaction is also guaranteed.