What are the common problems encountered in crawler collection?

This article is to share with you what are the common problems encountered when collecting reptiles. Xiaobian thinks it is quite practical, so share it with you to learn. I hope you can gain something after reading this article. Let's not say much. Let's take a look at it together with Xiaobian.

1. It is a garbled problem. Sometimes we succeed in retrieving information and find that data analysis does not work well and the information becomes garbled. At this point, you need to look at the HTTP header information to find out if there are any limitations on the server.

2. The website is updated irregularly.

The information on the Internet is not static, and it will be constantly updated in the process of our capture. At this time, we need to set the time interval for capturing information to avoid capturing the information cache of the website server.

3. Data analysis.

This step is basically close to success, but the workload of data analysis is very large, spending a certain amount of time is inevitable, and it is also very important to have a calm and firm heart.

4) IP restrictions.

When we trigger a site anti-crawling mechanism, the other site usually prevents you from continuing to view information by blocking the user's IP address. Usually temporarily blocked, if you want to quickly unblock, using Sun HTTP proxy IP resources to change the IP address is a good choice.

The above are the common problems encountered in crawler collection. Xiaobian believes that some knowledge points may be seen or used in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.