Crawler Proxy Pool: Crawler-specific Proxy Pool Service

Why do crawlers have to use proxy pools?

Friends who have engaged in data crawling must have encountered this situation: just run a few minutes of script, the target site will be your IP blocked to death. If you have dozens of spare IPs on hand to rotate, the site's anti-climbing mechanism is directly confused. This is the significance of the existence of the proxy pool -Take turns charging with a massive amount of IP, so that the anti-crawling system can't catch the patternThe

The biggest pitfall of the average self-built proxy is the maintenance costs. Just dealing with IP failures and speed tests and all that crap can break a person's heart. Not to mention the fact that some websites are specifically targeting data center IPs for blocking.Mixed dialing proxy pool for ipipgoIf you use your home broadband IP and server room IP together, the anti-blocking effect will be doubled directly.

What are the doors to look for when choosing a proxy pool?

There are a variety of agency services on the market, and these are a few indicators to keep an eye on:

1. IP survival time: it is recommended to choose a short-lived proxy that automatically changes in 3-10 minutes
2. Geographic coverage: ipipgo can provide residential IPs in 200+ cities.
3. request success rate: less than 95% direct pass
4. protocol support: at least must be compatible with HTTP/HTTPS/Socks5

Particular attention should be paid toConcurrent controlThis invisible indicator. Some agents look at the parameters of the beautiful, the actual launch of 20 requests at the same time on the collapse. ipipgo's pool measured to be able to withstand 500 + concurrency, which needs to quickly capture a large amount of data on the project is a life-saving straw.

Hands-on access to ipipgo proxy pools

In the case of the Python crawler, for example, the access process is as simple as it gets:

import requests

def get_proxy().
     Get the dynamic proxy from ipipgo (remember to replace it with your own account)
    return {
        'http': 'http://用户名:密码@gateway.ipipgo.com:9020',
        'https': 'http://用户名:密码@gateway.ipipgo.com:9020'
    }

response = requests.get('https://目标网站.com',
                       proxies=get_proxy(),
                       timeout=15)
print(response.text)

Be careful to putTimeout time set shortThe IPgo background can also set the automatic switching threshold, for example, if an IP fails 3 times in a row, it will be automatically kicked out of the current queue.

Practical anti-blocking tips

It's not enough to have a proxy pool to go along with all this tawdry maneuvering:

- Random User-Agent rotation (don't just use Chrome!)
- Mouse track simulation (for e-commerce sites with strict anti-crawl)
- Request frequency fluctuation design (don't use fixed 1 second / times)

There's an easy pit to step into:Don't write dead proxy addresses in your codeThe following are some of the most popular ways to do this. It's recommended to use ipipgo's API to get it dynamically, their home interface return format is super simple and direct json parsing works.

QA First Aid Kit

Q: What should I do if all the proxy IPs suddenly hang up?
A: First check the account balance, and then confirm the whitelist settings. ipipgo has real-time availability monitoring in the background, and there will be SMS warnings for sudden failures.

Q: What if I need a specific city IP?
A: In the API request parameter add location field on the line, such as to Shanghai residential IP to fill in the&location=shanghai_res

Q: Do I have to change my IP for each request?
A: Look at the target site wind control level. Ordinary information sites can be changed once every five minutes, financial sites are recommended to change every request

Q: How do I break the CAPTCHA when I encounter it?
A: ipipgo's exclusive IP pool can bind fixed IPs, which is convenient for docking coding platforms. Ordinary proxy pool is recommended to directly abandon the current IP

Lastly, don't try to buy a junk proxy on the cheap, you'll lose more money if you get a few accounts blocked. ipipgo has recently gone online.trial packageThe new users can get 5G of traffic, which is enough to test the feasibility of the project. Crawler this thing it, the right tool can really lose a lot of hair.