python - 爬虫在运行一段时间后开始不断获得504的StatusCode，是否是对方站点的反爬虫策略导致？有何回避策略？

Question

最近初学用Python写网页爬虫视图扒取一个站点上的特定数据。

最近碰到的一个现象是，当爬虫运行了一段时间后(根据Fiddler抓包的结果来看，大概是发送了将近3万个http请求后)，爬虫的获取的http响应的StatusCode骤然都变成了 504, 之后就再也获取不到200的响应了。

想请教一下各位大神，这种现象是否是由于扒取对象的站点的反爬虫策略造成的？

如果是的话，有什么常用的回避策略么？

P.S.
还注意到一个现象，不知与上述现象是否有关，一并描述：
即当爬虫的响应变成504之后，发现我的浏览器的代理选项被自动勾上了，如下所示：

Answer 1

The proxy option is checked, which is caused by fiddler. In the past, I often used fiddler to capture packets. After a period of time, I could not access the network. Uncheck the proxy option and the problem was solved

Answer 2

You can pay attention to an open source component I wrote, set up a proxy server pool to prevent the blocking of anti-crawler strategies, and automatically adjusted the request frequency, handled abnormal requests, and prioritized agents with fast responses. https://github.com/letcheng/ProxyPool

Answer 3

1.Agent

2. Simulate a complete request

3. Reasonable intervals

4.adsl disconnection and redial

Answer 4

Method:
Change the IP and use a proxy IP. There are many free and paid ones on the Internet
Free IP: http://www.uuip.net/
Paid IP: http://www.daili666.net/

Answer 5

Try accessing through a proxy

Answer 6

Why is the answer to this question like this? The 50x error lies in the website itself