Good Free Proxy Server: Quality Free Proxy Recommendations

Real life experience: do free proxies work or not?

Recently, when I helped a friend debug the crawler project, I found that many newbies are looking around for free agents. As a veteran who has stepped on countless pits, I must say a big truth:Free agents are like roadside snacks, occasional cravings can be, long-term use of quasi-diarrhea. The most common problems are agents that work in the morning and then lose connection in the afternoon, or are slow as a snail's crawl.

I remember last year when I was doing data collection, I tried an open source proxy pool, and 8 out of 10 IPs were invalid. The most pitiful thing is that once with a free proxy to submit important data, the result is that the IP was tagged resulting in information leakage. So that's why.When it comes to serious business, you need to use a reliable service provider.For example, I'm using ipipgo on a regular basis now, and their dynamic IP pool is really stable.

Teach you three tricks to pick a reliable agent

Don't be fooled by those "free forever" advertisements, the real good agent has to look at these hard indicators:

Here to teach you a dirt method: use python to write a detection script, automatic filtering spam proxy. For example, like this:

import requests

def test_proxy(proxy)::
    try: resp = requests.get('', 'proxy', 'request', 'request')
        resp = requests.get('https://ip.ipipgo.com/check',
                          proxies={'http': proxy, 'https': proxy}, timeout=5))
                          timeout=5)
        return resp.status_code == 200
    except.
        return False

This script calls ipipgo's own detection interface, which is more accurate than using other sites. It is recommended to run it every hour to kick the failing ones out of the proxy pool automatically.

Why do you recommend ipipgo?

I first came across ipipgo because they had aFree trial for new usersThe Activity. A few highlights from the trial:

1. Dynamic IP survival time is basically 6-12 hours, twice as long as other parents on the market.
2. Support filtering IP by region, it is especially convenient to do geographic collection.
3. There is a special anti-blocking strategy, with their technical documents in the configuration of the proposal, the probability of being blocked straight down 80%

What surprised me the most was theirIntelligent Routing FunctionThe fastest node is automatically selected. Once you need to batch process thousands of requests, using a free proxy is estimated to be jammed, change to ipipgo after 20 minutes to get it done.

Hands-on configuration tutorial

Using the python crawler as an example, configuring the ipipgo proxy is a three-step process:

initial step Login to the official website to get the exclusive agent address
second step Add authentication information to the code:

import requests

proxies = {
    'http': 'http://用户名:密码@gateway.ipipgo.com:端口',
    'https': 'http://用户名:密码@gateway.ipipgo.com:端口'
}

response = requests.get('destination URL', proxies=proxies)

third step It is recommended to work with the retry mechanism, so that even if an IP fails, it can be automatically switched:

from requests.adapters import HTTPAdapter
from requests.packages.urllib3.util.retry import Retry

session = requests.Session()
retries = Retry(total=3, backoff_factor=1)
session.mount('http://', HTTPAdapter(max_retries=retries))
session.mount('https://', HTTPAdapter(max_retries=retries))

Frequently Asked Questions QA

Q: What is the main difference between free proxies and paid proxies?
A: It's like the difference between public WiFi and a dedicated line. Paid agents have specialized maintenance, IP quality, response speed, stability are quantum improvement

Q: Can I try ipipgo?
A: New registration sends 3 days experience version, enough to test business scenarios. It is recommended to use the free amount to test the speed before deciding what package to buy

Q: What should I do if the proxy IP suddenly does not work?
A: First check whether the account is expired, and then contact customer service to check the use of logs. ipipgo background has real-time monitoring, can quickly locate the problem!

A final reminder:Proxy tools are a double-edged swordThe best way to maximize the value of your service is to choose the right service provider and configure it appropriately. Choose the right service provider + reasonable configuration, in order to maximize the value. If you are not sure of the demand, it is recommended to consult directly with ipipgo's technical customer service, they give the program than the online search is much more reliable.