Proxy Services for Crawling: Anti-Blocking IP Rotation Scheme

Try this life-preserving solution to get your IP blocked for data crawling.

What is the biggest headache for friends who do data crawling? Nine out of ten will say that the IP is blocked. Crawler scripts written by hard work, running on the target site blacklisted. Today we will nag some real, teach you how to use proxy IP to play the "face art", so that the site wind control system can not catch your true identity.

I. IP rotation is not random

Many people think that the proxy IP is to keep changing the address, the result is to change seven or eight or blocked. Here is a key point:Rotation strategy is more important than quantityIt's like playing hide-and-seek. It's like playing hide-and-seek, where you change your hiding place but leave footprints every time you move, and you'll still get caught.

There are three key points to be captured in an effective rotation program:
1. Don't be too regular (don't change at exactly the right time).
2. Failure to switch immediately without hesitation
3. Don't pile up a mix of old and new IPs.

 Python Example: Random Interval Switching
import random
import time

def switch_ip().
     Here we call ipipgo's API to get a new IP.
    new_ip = ipipgo.get_proxy()
     Randomize the wait time from 30 to 180 seconds
    wait_time = random.randint(30, 180)
    time.sleep(wait_time)
    return new_ip

Second, ipipgo practical configuration skills

I've used more than a dozen proxy services, and I'd say it's ipipgo that saves me the trouble. they have aIntelligent RoutingThe function is especially useful to automatically spread the requests to different regional nodes. Here we teach you a few exclusive configuration tips:

① Set double insurance in the crawler script:
- Main channel handles regular requests with static long-lived IPs
- Backup channel with dynamic short-lived IP for unexpected blocking

② Remember to turn onautomatic fuseMechanism, when an IP failed 3 times in a row, immediately pull the black 2 hours, this in ipipgo background can be set directly.

Third, the small white can also read and understand the anti-blocking guide

A big word of advice for those just starting out:Don't be cheap and use free proxiesThose public proxies have been crawling for a long time! Those public proxy pools have long been crawled rotten, using them is equal to throwing yourself into the net. We recommend ipipgo's exclusive IP package, although more expensive, but better than stable.

Here's an anti-blocking self-checklist:
✔ With different User-Agents per request
✔ Important operations go over the HTTPS protocol
✔ Control request frequency (don't be a robot)
✔ Clean up cookie traces regularly

IV. First aid kit for common problems

Q: How can I tell if my IP is blocked?
A: Continuous 403/503 error code, or return to the verification code page, hurry to change the IP! ipipgo background has real-time monitoring dashboard, red, yellow and green status at a glance.

Q: How big does the IP pool need to be to be adequate?
A: ordinary project 200-500 dynamic IP enough, if you do e-commerce price comparison of such high-frequency collection, it is recommended to ipipgo enterprise version, support 5000 + IP pool automatically rotate.

Q: Will it conflict to have more than one crawler on at the same time?
A: Creating a different account under the ipipgo accountsubchannelThe first is that each crawler has its own IP pool, which does not interfere with each other. This feature many peers do not know, is considered a hidden trick.

V. Speak the truth

Lastly, I would like to remind all my colleagues not to take IP rotation as a panacea. Site wind control are now engaged in behavioral analysis, light change IP does not change the operating habits as usual. With ipipgotraffic camouflageFeatures that mimic request characteristics to real users are the way to go for the long haul.

If you run into a technical problem that can't be solved, go directly to ipipgo's technical support. They have 24/7 online engineers, and the last time I encountered a blocking problem at three o'clock in the middle of the night, it was solved in ten minutes. This kind of reliable service is really rare in the industry, it is worth recommending to you.