Crawler IP rotation strategy: intelligent switching algorithm based on request frequency

When Crawler Meets Counter-Crawler - How tiring is it to manually change IPs?

Anyone who has done crawling understands that the anti-crawling mechanism of a target site is like a neighborhood security guard.Stare at the same face too many times and you'll have to stop someone.The traditional manual switching of proxy IPs is like running home and changing every time you are blocked. Traditional manual switching proxy IP is like running home to change clothes every time you are blocked, not only wasting time, but also easy to expose the law. Recently met a customer, his crawler every 15 minutes to be blocked, change IP change to doubt life - this is typical of theFixed Frequency for IP FailureCase in point.

Three Brushes for Smart Switching Algorithms

A really good IP rotation strategy should be like an old driver driving a car who knows how toAdjust your speed depending on the road conditions.. Our core idea is:

Like with ipipgo.Residential Dynamic IP PoolWhen it does, the algorithm automatically adjusts the request interval according to the response speed of the target website. When there are 3 consecutive 403 errors, it will switch to a new IP within 0.5 seconds, which is more than 20 times faster than manual response.

Hands on to build a smart scheduler

Here we share a live configuration scenario (Python example):

 Create an IP quality score sheet
ip_score = {
    "ipipgo_dynamic_IP1": {"success": 98, "speed": 0.3},
    "ipipgo_DynamicIP2": {"success": 85, "speed": 0.8}
}

def select_ip().
     Prioritize the ones with high success rate + fast response
    return max(ip_score, key=lambda x: ip_score[x]['success'] 0.6 + (1/ip_score[x]['speed'])0.4)

Be careful to set theIP Cooling MechanismIf you want to use the IPs that are marked as anomalous, rest them for at least 30 minutes before using them again. ipipgo's API supports bulk IP acquisition, which is perfect for rotating with this strategy.

Avoid the pitfalls

Seen people make IP switchingalarm clock-Regardless of whether it is blocked or not, 5 minutes punctually change IP. this is equivalent to tell each other: "I'm going to change the horse armor", but more likely to be recognized. The correct approach should be:

• ▢ Normal: 50-200 random changes per success
• ▢ Abnormal conditions: immediate replacement + automatic extension of switching interval
• ▢ Peak: borrowed from ipipgo'sStatic long-lasting IPhold up

QA time - you may want to ask

Q: What should I do if my IP is always blocked in seconds?
A: Check whether the request header carries the browser fingerprint, it is recommended to match ipipgo'sResidential agent + request for disguisecombination

Q: How can I tell when it's time to change my IP?
A: these three signals must be changed: ① 3 consecutive non-200 response ② response time suddenly spiked ③ CAPTCHA page appears

Q: Will using multiple proxy IPs at the same time conflict?
A: Use ipipgo'sMulti-node load balancingFunction to automatically assign different export IPs, remember to set the concurrency limit for each IP

Why ipipgo?

A real-world comparison reveals that regular proxy IPs are like public bicycles - everyone rides the same one. While ipipgo's9 million + family home IPs, which is equivalent to being able to call up a different home's broadband network at any time. In particular, theirIP warm-up mechanismThe new IP address can complete the DNS resolution and other preparatory actions first, and the success rate of actual use will be improved obviously.

Lastly, a reminder: smart switching is not a panacea, and it has to be coupled with standardized reptilian ethics. Just like driving a car can't just rely on navigation, it's also crucial to follow traffic rules. Use a professional tool like ipipgo to make data collection both efficient and secure.