Rotation Agent System Architecture Design Guide

What exactly does rotating agents solve?

Friends who have engaged in data collection understand that the biggest headache is that the IP is blocked. For example, you want to batch check the price of e-commerce, with a fixed IP continuous access, people's websites in five minutes can give you a dead seal. This time you need toAutomatic switching between different IP addressesThe rotation mechanism is equivalent to a "new face" for each request.

To cite a real case: last year, there is a price comparison platform old man, with ordinary proxy was sealed 200 + times a day. Later on, on the rotation system, the access interval into 30 seconds + each time to change the IP, the survival rate directly pulled to 90% above. Here is a pit to pay attention to:Don't be greedy.The frequency of visits and IP quality must be balanced.

How are wheels built? Four-tier architecture disassembled

Let's start with a simple architectural schematic (pretend there's a hand-drawn table here):

The focus here is on scheduling strategies. Personal Recommendationsdynamic weighting (DW) methodThe following is a list of some of the most popular IPs in the world: each IP is given a success score (e.g., response rate, length of time alive), and priority is given to high scoring IPs. don't be an egalitarian, some of the junk IPs should be eliminated.

Three core issues to crack the program

Question 1: IP just expired?
It is recommended to use ipipgo's dynamic residential IP, their IP pool update frequency can be measured to 15 seconds / times. There's a funny operation: take the IP to request the verification interface once before accessing it, and confirm that it's available before executing the official task.

Question 2: Account association blocked?
In addition to changing IP, remember to synchronize and clean your browser fingerprints. There is a customer case: with rotating IP + fingerprinting browser, the account survival cycle was extended from 3 days to 28 days.

Question 3: Slow as a snail?
Don't use all overseas IPs, like ipipgo's domestic transit node measured latency can be suppressed to below 80ms. Focus on configuration:Request Link Multiplexing+ TCP long connections are more than 3 times faster than creating a new connection every time.

A collection of common QA for white people

Q: Do I have to change my IP every time I visit?
A: Depends on the business scenario! High concurrency requirements like ticket grabbing can be set 1 request/1IP, and ordinary collection is recommended to change once for 5-10 requests.

Q: Will it be more expensive to use a dynamic IP?
A: Take ipipgo's package as an example, 100,000 dynamic IP requests cost ≈ 30,000 static IPs, but with double the success rate, it's actually more cost-effective.

Q: Build it yourself or buy a service?
A: small-scale open-source framework + ipipgo API on the line. Daily request volume of more than one million is recommended to use their enterprise-grade rotating gateway, with intelligent routing kind.

Five Wild Ways to Choose a Service Provider

A bunch of self-proclaimed pros on the market to teach you a few unspoken secrets:
1. Test with intentionally high-frequency access (e.g., 10 times a second) to see if the provider will play dead
2. To be provided by the other partyReal server room addressDon't believe the ones that give it to the state and not the city.
3. Measure the speed at 3:00 a.m., only those who can stabilize within 200ms are really good at it
4. look at the customer service response speed, more than 10 minutes do not return is basically a second-hand traffickers
5. look for something that pays by the hour, something like ipipgo that is flexible and doesn't hurt to use.

Finally, a big truth: rotating agents is not a panacea, must be coupled with a reasonable business strategy. I've seen someone with a top-level IP still blocked, and later found that the UserAgent forgot to randomly generate. So.It's the details that are the devil.The