Proxy IP access to financial data: financial data proxy collection program

I. Why do financial data always get blocked? Try this wildcard

Brothers who have engaged in stock quote crawling understand that those financial websites are more difficult to crawl than slot machines. Last week, a quantitative trading friends and I complained, with their own home broadband to catch data, just run two days IP was blocked to death. In fact, this matter is similar to the guerrilla warfare, you take a fixed IP to hard just, they will give you a minute to pull the blacklist.

At this time it is necessary to use the proxy IP to play cover, as if every time you go out to change clothes. For example, you want to capture a commodity trading platform, with ipipgo's dynamic residential agent, each request for a real user to change the IP address, the site simply can not tell whether you are a real person or a machine.

Second, the choice of agent is like buying food to see the dishes under the meal

There are all sorts of agent types on the market, so I'll draw a line in the sand:

Dynamic Residential AgentsThe following are some of the most important things you can do for your business:: to capture high-frequency, such as real-time exchange rate monitoring. ipipgo's Dynamic Residential Enterprise Edition, more than $9 for 1G traffic, can automatically rotate the IP pool, than to go to the market to cut the price of a good deal!

import requests
from ipipgo import get_proxy Assuming this is their SDK

proxy = get_proxy(type='dynamic')
resp = requests.get('A financial website', proxies={'http': proxy})

Static Residential IPFor long-term data monitoring, such as tracking a stock for three months, it is recommended to use a fixed IP of 35 dollars per month, which survives for a long time and is not prone to triggering anti-climbing rules.

Third, hand to teach you to ride an anti-blocking system

Here's a real case to share: a team doing futures analysis built a smart switching system using ipipgo's API. Here's how they play it:

1. 10 new IPs per minute through APIs
2. Automatic detection of IP availability (only for response speeds <800ms)
3. Set up a failure retry mechanism to automatically switch IP for three consecutive failures.

Remember to add random delays in the code, don't send requests like a machine gun. It is recommended to randomly pause between 0.8-2 seconds to simulate the rhythm of the real operation.

iv. guide to demining common problems

Q: What should I do if I always encounter CAPTCHA?
A: Change the User-Agent in the request header to a common browser version, use ipipgo's TK dedicated proxy, this IP segment has a high reputation!

Q: What should I do if I need to capture domestic and foreign data at the same time?
A: Their cross-border dedicated line can be automatically routed, such as grabbing the U.S. crude oil data to go to the Americas node, the domestic futures data to go to the local nodes

Q: What can I do about data delays affecting trading decisions?
A: Choose a dedicated static IP + cloud server deployment, measured latency can be controlled within 200ms, faster than many brokerage APP!

V. Don't step on these pits

1. Don't buy IP for cheap, or you'll get a lawsuit if the data is not accurate.
2. Dynamic agents should regularly clear cookies, otherwise the site can be tracked through the browser fingerprints
3. SSL certificate error do not be hard, may be the proxy protocol is not paired (HTTP/HTTPS should be set separately)

At the end of the day, I recommend ipipgo's service, the best one he uses is that oneIntelligent RoutingFunction. For example, if you want to capture the data of the London Metal Exchange, it will automatically assign a local residential IP in the United Kingdom, so you don't have to switch nodes by yourself. Package price is also real, especially dynamic residential standard version, more than 7 yuan 1G flow enough to grab tens of thousands of requests, cheaper than drinking milk tea.

I recently saw that they have a new one on their websiteSERP APIThe first thing you need to know is that you can directly access the search engine's financial newsletter data. Brothers in need can go to take a look, but remember to catch the data to be restrained, do not make the server down.