What are the companies that provide crawling services in Chengdu | Chengdu crawling services company rankings

Why are Chengdu crawler companies focusing on proxy IPs?

If you look for a technology company in the office buildings of Chengdu's Tianfu Third Street, nine times out of ten, you will hear the wail of "IP is blocked!" The most painful thing for crawler engineers is not the code error report, but the target website suddenly gives you a message. The biggest headache for crawler engineers is not the code reporting errors, but the target website suddenly popping a CAPTCHA or directly blocking the IP.Proxy IP Service Providercame to the rescue, especially with the likes ofipipgoThis kind of clutches 90 million + residential IP resources in their hands, and just changing IPs is like changing vests.

A Chengdu startup team doing e-commerce price comparison told me that they used free agents before, and the resultant success rate of data capture was less than 30%. later changed toDynamic residential IP for ipipgoThe success rate is up to 85%. It's like playing a game with a plug-in, but we have to emphasize that we're talking about serious commercial use.

Survival of local crawler companies in Chengdu

According to what I heard in the teahouse (I won't name any specific names), there are two main types of reptile service companies in Chengdu:

A company doing public opinion monitoring complained to me that they used a certain proxy IP before, and as a result, the target website updated its anti-crawling strategy, and the whole IP pool was directly scrapped. Later, they switched toipipgoIt's the only way to solve the problem.Residential IP Resource LibraryUpdating it twice in three days doesn't give the anti-crawl system any time to react.

Crawlers must know the proxy IP doorway

Don't look at the proxy IP service provider is full of streets, here head water is very deep. Once in the mill bridge met a technical small brother, said his family bought the proxy IP look cheap, the results of 20% are duplicate IP. here to teach you a few pitfalls to avoid tips:

• Look at the IP purity: Don't believe those who claim millions of IPs, be asipipgoThis outspokenFamily Home IPreliable
• Test switching speed: The real dynamic is the one that can see the IP change even if you manually press F5 to refresh it.
• Protocol supportSome proxies don't even support socks5, so you can't even crawl them!

QA Session: Top 3 Questions Frequently Asked by Crawler Engineers

Q: Why does using a proxy IP still trigger CAPTCHA?
A: It is likely that the data center IP is used, try itResidential IP of ipipgoThis kind of IP is no different from a real person on the Internet.

Q: How to choose between dynamic IP and static IP?
A: Dynamic for high-frequency acquisition, static for long-term monitoring.ipipgoBoth types are supported, and you can still mix them up

Q: How do I get transnational data collection?
A: Don't mess around with offshore servers, just use theipipgo's global IP coverageIP on demand in more than 240 countries and territories

The Hidden Play of Proxy IP Services

A company in Chengdu doing domestic e-commerce has recently made a whole tawdry maneuver: using theStatic residential IP for ipipgoRaise a batch of "old accounts", specifically used to monitor the promotional activities of competitors. This method of play is several times higher than the survival rate of ordinary crawler accounts, which is equivalent to burying a long-term undercover agent in the target website.

Another friend who does recruiting data went even further and put theAPI interface for ipipgoDirectly integrated into the crawler system, set up the IP replacement policy, the whole system with the opening of the autopilot like, 3:00 in the morning can automatically catch data.

Finally, to tell the truth, in Chengdu to engage in crawler services without a reliable proxy IP provider, as hot pot restaurant without chili as fate. For those who are still using free proxies, we suggest going toipipgoGet a test account and try it out, you'll know the difference between a pro and an amateur when you use it.