One common problem when it comes to crawlers using proxy servers is that multiple crawlers use the same IP and port number at the same time. This problem is akin to a group of people trying to get through a narrow door where only one person can get through while the others must wait. Similarly, when multiple crawlers use the same proxy server, they get into the same predicament.

Crawlers competing for resources

Imagine you're at a rush event, but there's only one product. Everyone tries to enter the store through the same aisle and everyone is scrambling to get their hands on the baby. In this case, only one lucky person manages to get in, while the others have to wait helplessly.

To a crawler, a proxy server is like a passageway in front of a store. If multiple crawlers use the same proxy server with the same IP and port number at the same time, they will be like a group of people crammed into a small space, competing for limited resources. The result is that only one crawler will succeed in getting the data it needs, while the others are forced to wait or fail.

Solution: Multiple IP and port numbers

One way to solve this problem is to use multiple IP and port numbers. Imagine everyone being able to enter a store without any problems when there are multiple access points to choose from, instead of being crammed into a small space. Similarly, when crawlers use proxy servers with different IP and port numbers, they can avoid the problem of resource contention and increase the efficiency of data acquisition.

Like a dancing reptile

It may not be an exaggeration to compare the process of a crawler using a proxy server to a magnificent dance. Imagine that each crawler is a graceful dancer and the proxy server is their common stage. If all the dancers follow the same rhythm and pace, and move according to the established rules, the whole dance will be incredibly harmonious, and each dancer can fully display their talents.

Flexible dance steps

However, if all crawlers use the same proxy server with the same IP and port number, like all dancers trying to follow the same steps, the dance will become chaotic and disorganized. In this case, dancers may bump into each other, step on each other, or even fall down.

Therefore, to solve this problem, the crawlers need to be able to flexibly change their dance steps as needed. Each crawler should choose a different proxy server to avoid resource contention and conflict, just as dancers cooperate with each other in their dance to avoid accidents.

concluding remarks

When crawlers use proxy servers, using the same IP and port number may lead to the problem of resource contention and reduce the efficiency of data acquisition. By using proxy servers with multiple IPs and port numbers and flexibly changing their use, this problem can be avoided and the efficiency of the crawler can be improved, just like dancers gracefully displaying their talents on stage.