Containerized Crawler: Docker+Scrapy Cluster Deployment Solution

When the crawler hits the counter-crawler, is your IP okay?

engage in crawling the old iron are sure to have experienced such a scene: yesterday also ran a good script, today suddenly 403. At this time do not rush to smash the keyboard, eighty percent of your IP is the site stared at. Just like you go to the supermarket to try to eat always be remembered by the clerk looks, crawler with a fixed IP high-frequency access, the site does not block you block who?

That's when it's time toThe Great Proxy IP RotationCome to the rescue of the jungle. Like every time you go to the supermarket to change a different look, so that the site can not recognize you are the same person. But manually change the IP is too much trouble, especially the need for large-scale crawling - this time we have to bring out the protagonist of the day:Docker+Scrapy Cluster+ipipgo Proxy PoolsThree Musketeers combo.

Reptile Crossdressing in Three Minutes

Let's get real first, let's use Docker to pack the crawler into containers. This is like moving boxes when deploying, wherever you want to run. Look at this sample Dockerfile:

FROM python:3.8-slim
RUN pip install scrapy ipipgo-client
COPY . /crawler /app
WORKDIR /app
CMD ["scrapy", "crawl", "target_spider"]

Here's the point! Add this to scrapy's settings.py:

IPIPGO_API = "Your Proprietary Key"
DOWNLOADER_MIDDLEWARES = {
    'ipipgo.middleware.RotatingProxyMiddleware': 610
}

This way each request will automatically switch IPs through ipipgo's proxy pool, which is faster than an American Girl Warrior transformation. The actual test down, using hisResidential Dynamic IP, the blocking rate can drop from 70% to below 5%.

Cluster Deployment of Tartan Operations

Standalone crawlers are like the Lone Ranger, clusters are the Avengers. Get an army of spiders with docker-compose:

Remember to configure the docker-compose.yml in theAutomatic capacity expansion policyIf you encounter a difficult site, summon more crawler nodes. ipipgo has a hidden feature - theGeographically customized IPThe IP address of a specific city can be specified, which is particularly useful for websites with geographical restrictions.

A practical guide to avoiding the pit

Three common mistakes newbies make:

1. IP switches too often and gets treated like a robot → ipipgo's Smart Interval Mode adjusts automatically
2. Forgot to clean cookies → add a middleware that automatically wipes cookies.
3. Timeout settings are not reasonable → Dynamically adjusted according to the site's response speed, do not use fixed values

Recommended for ipipgoAPI Debugging ToolsFirst test the IP quality, and then batch deploy to the cluster. Their API has a hidden parameter ?protocol=https, which can force an encrypted channel, and the measured speed can be as fast as 30%.

Frequently Asked Questions QA

Q: What should I do if my proxy IP suddenly fails?
A: ipipgo's auto-fuse mechanism will switch to a new IP within 5 seconds, remember to turn on RETRY_ENABLED in scrapy!

Q: How to schedule the crawler nodes in different regions?
A: Set the environment variable REGION=East China in docker-compose, then read this variable in the code to call the region parameter of ipipgo

Q: How do I retry a blocked request?
A: use scrapy's retry middleware with ipipgo's failure callback, sample code:

def retry_request(request).
    request.meta['proxy'] = ipipgo.get_new_proxy()
    return request

Say something from the heart.

In the crawler business, three parts rely on technology and seven parts rely on resources. Maintaining a proxy pool on your own is like raising a fish pond, which is both costly and time-consuming. With ipipgo professional services, it is equivalent to directly contracting the entire fishing ground. Especially theirmixed dialing lineThe IPs of different carriers can be randomly mixed, and the success rate of capture can reach 99.2%.

Finally, here's a tip: Dock the crawler logs with ipipgo's API monitoring to be able to see the consumption of each IP in real time. When you find a site is particularly hard to get to, cut directly to theirHigh Stash Enterprise EditionThreads that are guaranteed to make the target site not recognize you as a crawler.