News Grabber: Real-Time Media Monitoring System

News Crawler Survival Rule: Three Axes Against Anti-Crawling

If you have engaged in data collection, you know that the anti-climbing mechanism of the website is more strict than the security door. Last week, a buddy doing public opinion monitoring complained to me that he had just built a good news crawling system, which ran for less than two days and was blocked by more than 10 IPs. This is like a gopher, which has just solved the problem of CAPTCHA and frequency limitations, which makes one's head numb.

Here's a trick for the guys--Proxy IP dynamic rotationThe principle is very simple. The principle is very simple, just like Sichuan opera face changing, each request is to change a vest. With ipipgo's dynamic residential proxy, each request automatically switches the exit IP, the server can not distinguish between a real person or a robot in the operation.

import requests
from itertools import cycle

proxy_pool = cycle(ipipgo.get_proxy_list()) get dynamic IP pool from ipipgo

def fetch_news(url)::
    for _ in range(3).
        try.
            proxy = next(proxy_pool)
            response = requests.get(url, proxies={"http": proxy, "https": proxy}
                proxies={"http": proxy, "https": proxy}, timeout=10)
                timeout=10)
            return response.text
        except Exception as e.
            print(f "Failed with {proxy}, move to the next one!")
    return None

IP Cloaking: Don't Let Websites Recognize Your True Identity

Some websites are so smart that they can recognize crawlers through browser fingerprints. At this time, just change the IP is not enough, you have to have a whole set of combination of punches. We recommend using ipipgo'sHighly anonymous agents, paired with a request header randomizer to make each visit look like a different region of the Internet.

A practical guide to avoiding the pit: these details will kill you

1. Don't gouge on agent qualityThe free proxy often makes a mess, either can not connect, or speed like a snail. ipipgo's enterprise proxy measured availability of 97% or more, especially suitable for the need to monitor the scene 24 hours a day, 7 × 24 hours a day.

2. There's something to be said for distributed deployment: Spread the crawler nodes across different regions with ipipgo'sCity-level location agents, making requests appear to come from all over the country. For example, when monitoring local news, accessing from a local IP is less likely to trigger a windfall.

3. Don't be lazy about exception handling: stop for 10 minutes if you encounter 403, and automatically cut the alternate IP if you encounter CAPTCHA. it is recommended to bury the exception catch in the code, like this:

def safe_crawler().
    try.
         Normal crawl logic
    except CaptchaException as e.
        ipipgo.ban_current_ip() flag problem IPs
        switch_to_backup_node() switch backup node
    except BlockedException: enter_cool_down_mode
        enter_cool_down_mode(600) cool down 10 minutes