The role of proxy IP in crawling and indexing: analysis of crawler indexing proxy technology

Why are proxy IPs the talisman of crawlers?

Do data collection of the old iron know, the server sealed IP is as common as eating and drinking water. Last week, an e-commerce friend complained that he had just run for two hours and received a 403 gift package, so angry that he almost smashed the keyboard. At this time if you have at handproxy IP poolIt's like playing a game with an infinite renewal plug-in, sealing one for another, and the collection simply won't stop.

To give a chestnut, a treasure product details page of the frequency of access restrictions are notoriously ruthless. If you use a single IP to harden it, it won't last more than half an hour. But if you rotate the IP through ipipgo's dynamic residential proxy, with random access intervals, the collection success rate directly soared from 30% to 95%+.

import requests
from itertools import cycle

proxy_pool = cycle([
    'http://user:pass@proxy1.ipipgo.net:8888',
    'http://user:pass@proxy2.ipipgo.net:8888'
])

for page in range(1,100): proxy = next(proxy_pool)
    proxy = next(proxy_pool)
    try: response = requests.get(f'{page}')
        response = requests.get(f'https://taobao.com/list?page={page}', proxies={'http': proxy}, proxies={'http': proxy}, }
                              proxies={'http': proxy}, timeout=10)
                              timeout=10)
        print(f'Successfully crawled page {page}')
    except.
        print(f'Current proxy {proxy} failed, automatically switching to the next one')

Choose the right type of agent to get twice the result with half the effort

There are three main schools of proxy IPs on the market, so you'll have to pay tuition fees if you use the wrong one:

Last month to help friends debug a cross-border e-commerce price monitoring system, began to use the data center agent, the results were identified by Amazon mom do not recognize. After switching to ipipgo's dynamic residential agent, the degree of camouflage is directly pulled full, and the amount of data acquisition has quadrupled.

A practical guide to avoiding the pit

Don't think that just because you've hung up your agent that everything is fine, there are a lot of doors here:

1. IP Rotation RhythmDon't be silly to cut the IP every second, the site is not stupid. It is recommended to dynamically adjust the anti-climbing strategy according to the target site, such as every 5 requests completed to change the IP, or when encountering CAPTCHA switch!

2. Protocol SelectionSome websites will detect socks5 traffic, it is safer to use http proxy instead. ipipgo's client supportsIntelligent protocol switchingFunction that automatically matches the optimal connection

3. geographic locationTo capture the Japanese Rakuten market, don't use the US IP pool. Their residential agent supportsCountry-City-OperatorThree levels of positioning, acquisition accuracy directly increased 70%

QA First Aid Kit

Q: What should I do if my proxy IP is often blocked?
A: It is recommended to turn on ipipgo'sAutomatic phase-out mechanismThe IP pool of 20 million+ IP's, when a certain IP fails 3 times in a row, will automatically go offline.

Q: What should I do if I need to capture pages rendered by JavaScript?
A: It's more robust to integrate proxies in Selenium, remember to add these two lines of configuration:

options.add_argument('--proxy-server=http://user:pass@proxy.ipipgo.net:8888')
options.add_argument('--disable-blink-features=AutomationControlled') 

Top 3 reasons to go with ipipgo

1. Agreement Family BucketFrom HTTP to Socks5 full support, even the cold TK line (do cross-border e-commerce all understand)
2. The price is great.: Dynamic Residential Agents as low as $7+ for 1 G. Cheaper than buying coffee!
3. Nanny serviceLast time I ran into a technical problem at 2am, their engineer responded in seconds and helped me remotely to adjust the code!

Sign up for ipipgo now and get a free ride!500M test trafficThe first thing you need to do is to run a small project to test the waters. Remember not to use those free agents, light data leakage, heavy server was hacked, lost a wife and soldiers.