eBay Web Crawl: Auction Data Collection

Why do you need a proxy ip to mess with eBay auction data?

Engaged in eBay data capture know, this platform with the anti-reptile anti-thief like. To give a chestnut, you even with the same ip address wild brush page, not out of half an hour quasi to give you a pop-up verification code, and then a little more ruthless direct blocking of IP segments. At this time we have to rely onProxy ip rotationto disguise themselves as regular users in different regions, especially in scenarios such as grabbing real-time quotes that require high-frequency refreshing.

Last year, a sneaker resale friend planted a heel, he used his home broadband for three consecutive days to catch the AJ limited edition transaction records, the result is that the IP segment of the entire community were eBay blacklisted, so that the neighbors can not open the eBay page. This thing tells us:Do data collection never save money on proxy ipThe

The three iron laws of real-world proxy ip selection

There are many proxy ip services on the market, but the ones suitable for eBay crawling have to meet three hard indicators:

1. high stash of proxies (do not use transparent proxies, otherwise it is equivalent to running naked)
2. at least support the second switch (auction countdown page updated frequently)
3. can specify the IP of a particular city (for example, to capture the U.S. mainland auction data)

Here's a little something for you.ipipgoof residential agent pools, they have a cold but useful feature - theDedicated auction lane。实测用这个通道的IP段，eBay的反爬策略响应会提高3倍以上，估计是这些IP之前没被滥用过，系统风控识别为低风险。

Teach you to build a collection system by hand

Let's start with an earthly solution: use Python's requests library with a proxy ip, and crucially, set a random hibernation time. Don't be silly with fixed intervals, eBay can detect mechanical rhythms.

import requests
import random
from itertools import cycle

proxies = cycle(ipipgo.get_proxies(count=50))   获取50个动态住宅ip

def fetch_auction(item_id):
    try:
        proxy = next(proxies)
        res = requests.get(
            f"https://www.ebay.com/bid/{item_id}",
            proxies={"http": proxy, "https": proxy},
            timeout=10
        )
         随机1-5秒
        time.sleep(random.randint(1,5)) 
        return res.json()
    except:
         自动剔除失效代理
        ipipgo.report_failure(proxy) 
        return fetch_auction(item_id)

Watch this.ipipgo.report_failure()method, a feature unique to their SDK. Traditional proxy services need to maintain their own list of invalid IPs, this interface can give real-time feedback to the server about the problem IPs, and the ip will not be assigned again for the next request.

A Guide to Avoiding the Pit (Blood and Tears)

The most dopey situation I've ever encountered isIP geolocation driftThe actual export node is in Holland. Once with a certain agent shows that it is the United States IP, the actual export node in the Netherlands, the result of the collection of shipping data all wrong. Later, I switched to ipipgo.geofencefeature to force a limit on the state the IP belongs to before it is resolved.

Frequently Asked Questions QA

Q: What should I do if I always encounter Cloudflare human verification?
A: Turn ipipgo's browser fingerprinting camouflage feature on and use it with residential proxies. The combination of Chrome version 107 fingerprinting + New York residential IP has been tested, and the verification trigger rate can be reduced to below 5%.

Q: What if I need to collect historical transaction records?
A: Use ipipgo's long-term IP leasing service, apply for 5-10 fixed residential IPs, collect only 100 pages of data per IP per day, and manually query them disguised as individual sellers.

Q: What should I do if the proxy IP speed affects the bidding?
A: You have to use ipipgo to grab last minute bids低专线，虽然价格贵三倍，但能保证在200ms以内，比普通代理快8倍不止。

Tell the truth.

I've seen too many people use free proxies for cheap, and in the end, the data was not collected but the account was blocked. eBay's account wind control and IP reputation system is linked, an IP problem, the associated account may beimplicate and punish also the criminal's associates. It is recommended to enable it in the ipipgo backendAutomatic Reputation CleaningThe service puts used IPs into "foster" maintenance, which regularly simulates real-life operations to maintain the health of the IPs.

As a final reminder, it's a good idea to collect data by hanging the product page'sOfficial API Application. Although the success rate is not high, but in case of application, with the proxy ip to do data complement, so that both compliance and security. After all, our goal is to get data, not to fight with the platform, right?