Crawl all the pages of the site method: the whole site proxy crawling program

Proxy IP whole site crawling wild card play

engage in data crawling old iron certainly have encountered the anti-climbing mechanism, especially when the whole site crawlingIP blocking is as frequent as eating and drinkingThe first thing you need to do is to get your hands dirty. Today, how to use ipipgo's proxy service to play around with the whole site crawl, hand in hand to teach you to pack the site data to take home.

Why do I have to use a proxy IP?

To give a chestnut: you continuous ten minutes non-stop access to a certain treasure, people's servers immediately put you as a robot off the small black room. Proxy IP is equivalent toEvery day, I change my vest to knock on doors., ipipgo's pool of millions of IPs is enough to make target sites not recognize who you are.

import requests
from itertools import cycle

 ipipgo proxy pool configuration (remember to get the real API from the official website)
proxy_api = "https://api.ipipgo.com/getproxy?type=http&count=50"
proxy_list = requests.get(proxy_api).json()['data']
proxy_pool = cycle(proxy_list)

url = 'https://target-site.com/page/'

for page in range(1,100): current_proxy = next(proxy_pool)
    current_proxy = next(proxy_pool)
    try: current_proxy = next(proxy_pool)
        response = requests.get(
            url + str(page), proxies={"http": current_proxy
            proxies={"http": current_proxy, "https": current_proxy}, timeout=10
            timeout=10
        )
        print(f "Page {page} crawled successfully, using proxy: {current_proxy}")
    except.
        print("This IP is deprecated, change to the next one right now!")

Proxy IP selection three big pitfalls

Agency services on the market are a mixed bag, remember these three guidelines for avoiding pitfalls:

① High stash is the way to go: Some proxies expose the X-Forwarded-For header, which is tantamount to farting with your pants down!
② Don't be cheap: For a 9.9 monthly service, the IP may be shared by hundreds of people
③ Agreements need to be right: http/https/socks5 according to the target site flexible selection

If you use ipipgo, we recommend going directly to theirMixed use agreement packagesIt automatically adapts to different website requirements, with a pro-tested success rate of 95% or more.

Four Steps to Whole Site Crawl Trick

1. First put the spider to explore the road: with 5-10 proxy IP quickly sweep through the site structure
2. Dynamically adjusting the frequency: automatically slowing down the request when it encounters a 429 status code
3. Disguise header information: each time the switching agent randomly change User-Agent
4. Abnormality monitoring: 3 consecutive failures to automatically black the current agent

Real-world common rollover scene

Q: What should I do if my proxy IP is not working?
A: ipipgo's proxy pool supportreal time hot updateIf you want to use their API to refresh the available IPs every 15 seconds, just add an auto-retry mechanism to the code.

Q: What should I do if the crawl is slow as a dog?
A: Try theirExclusive High Speed AccessIf you have a multi-threaded crawler, the speed can be more than 5 times. Pay attention to control the number of concurrency, don't make people's servers crash!

Q: What can I do if I encounter a CAPTCHA pop-up window?
A: ipipgo has aResidential Agent PackageThe CAPTCHA trigger probability can be significantly reduced by using real home network IPs with behavioral simulation scripts.

A special reminder for veteran drivers

Don't use free agents! Last time, there is a brother to save trouble, the result of crawling the data was injected into the advertising code, and finally the father of the party directly to the door to claim compensation. With ipipgo's enterprise service there aredata encryption pipeline, the equivalent of putting body armor on a reptile.

Whole-site crawling is, in the end, a constant battle, and the key is tosteady as a dogIt's a good idea to set up a mechanism to switch proxies automatically. Set up a good mechanism for automatic switching of proxies, prepare a cloud server 24 hours a day to hang running, with ipipgo's traffic monitoring panel, adjust the strategy at any time is the king. What specific problems welcome to their official website to find technical customer service nagging, those engineers than we know how to grip data (laughs).