Web crawler concept: crawler proxy IP configuration core program analysis

This is probably the most realistic guide to crawler agents you'll ever see

Crawler old iron understand, IP is blocked like a takeaway was stolen as crazy. Today we will nag how to use proxy IP to the crawler to wear a "cloak", focusing on those textbooks will not write the details of the actual combat.

Three Rules for Surviving Proxy IP

Don't think you can just buy an IP package and rest easy, there's a lot more to it than that:

1. Rotation strategy should be "wave" enough

Don't be stupid and binge the site with the same IP, it's recommended to change IPs every 5-10 requests. as a chestnut, use ipipgo's dynamic residential IPs, their API spits out fresh IPs automatically:

import requests
proxy = {"http": "http://用户名:密码@gateway.ipipgo.com:9020"}
for _ in range(10): resp = requests.get(url, proxies=proxy)
    resp = requests.get(url, proxies=proxy)
     Automatically switch IP pools every 10 times

2. Don't be lazy about validation mechanisms

Get the proxy IP first speed test, it is recommended to use the domestic mainstream website robots.txt to do connectivity test. ipipgo client comes with aSurvival detection functionThe system can automatically filter failed nodes.

3. Flow control has to be "loaded".

It is recommended to control the request interval to 3-8 seconds random fluctuations, peak with ipipgo'sTK LineCan break the QPS limit. Remember this golden ratio:

A guide to avoiding the pitfalls of choosing a proxy IP

There is a mixed bag of agency services on the market, so remember these three don'ts:

1. Don't choose cheaplyData Center IPEasy to be flagged by anti-crawl systems

2. Don't be gullible"Unlimited traffic."Packages, regular vendors are billed by volume

3. Do not ignoreProtocol compatibilityIf you have a dual protocol like ipipgo that supports socks5 and https, it's a lot more stable.

ipipgo practical program recommendation

According to our tests, these three combination programs have the highest success rate:

 Small and Medium Crawler Program
Dynamic Residential (standard) + auto switcher + 3 seconds delay

 Enterprise Data Collection
Static Residential IP + Customized Routing Rules + Distributed Scheduling

 Special Scenario Breakthroughs
TK Private Line + Request Header Disguise + Fingerprint Browser

Highlighting theirunique skill--Dynamic Residential Enterprise Edition SupportIP Location CustomizationIf you want a Shanghai IP address, it will never be assigned to Beijing, which is especially useful for certain websites that require geo-targeting.

Frequently Asked Questions QA

Q: What should I do if the proxy IP suddenly fails to connect?

A: Check the whitelist settings first, ipipgo's enterprise supportIP Fixed Binding.. If you experience a large failure, it is recommended to turn on theirDisaster Recovery Switching ModeThe

Q: How do I judge the quality of the agent?

A: focus on three indicators: response speed 95%, IP survival time >15 minutes. ipipgo background has a real-time monitoring panel, this point is very friendly to technical whites.

Q: How can I save my IP from being blocked?

A: Immediately stop all requests from that IP, marking them in the ipipgo client asPollution IPThe system will automatically replenish the new IP. in severe cases, it is recommended to switch the protocol type, e.g. from HTTP to Socks5.

Our Selection

After a real-world comparison, ipipgo'scross-border rail lineIt can really hit in terms of success rate. Especially with theirIntelligent RoutingThe function, which automatically selects the optimal line, is so much less laborious than manual configuration. The price is also more realistic:

Finally, to tell the truth, proxy IP is not a panacea, with UA camouflage, request speed limit these basic skills. However, choosing the right reliable service provider can really make the crawler less step 80% pit, in this regard ipipgo'sAnomaly Early Warning Systemrespond in singing1v1 Technical SupportPowerful indeed. Try their customized solution the next time you encounter an upgrade to your anti-climbing mechanism.