Reverse HTTP proxy: load balancing test special reverse HTTP proxy building program

Express Station Proxy: How does a reverse HTTP proxy really work?

Load balancing testing is like sorting couriers in a double eleven warehouse, traditionally you have to build your own conveyor belts and hire sorters. Now using a reverse HTTP proxy is the equivalent of aRenting an off-the-shelf intelligent sorting centerWe only need to send the courier (traffic) to the designated address. ipipgo's residential IP resources are like a global courier network, especially suitable for simulating real business scenarios.

Three-piece preparation: don't be sloppy with your equipment list

To set up this test environment, you have to have three things on hand:

1. Docker-capable server (2-core 4G recommended to start)
2. Reverse proxy tools like Nginx or Traefik
3. At least 5 proxy IPs from different regions (dynamic residential IPs from ipipgo are recommended, their IPs come with a geographic diversity buff)

Focused Reminder:Don't use your own office IP as a source, it's like testing a logistics system with your own garage, you can't measure the real situation at all.

Configuration Practice: Changing Configuration Files by Hand

In the case of Nginx, the configuration file has to be tossed like this:

upstream test_cluster {
    server proxy_node1_ip:port weight=5; U.S. West Coast node
    server proxy_node2_ip:port weight=3; Frankfurt, Germany node
    server proxy_node3_ip:port max_fails=2; Tokyo, Japan node
}

server {
    max_fails=2; Tokyo, Japan node } server { listen 80;
    location / {
        proxy_set_header X-Real-IP $remote_addr; proxy_pass ; proxy_set_header X-Real-IP $remote_addr
        proxy_pass http://test_cluster;
    }
}

Knockout:Remember to replace the proxy node IP with a real residential IP provided by ipipgo, they support both SOCKS5 and HTTP protocols and are not picky about matching.

Testing and verification: Seeing is believing

Don't just call it a day after starting the service, test it to death with this command:

for i in {1..100}; do curl -x http://你的服务器IP:80 http://检测网址 && sleep 0.5; done

Observing the geographical characteristics of the output results, it should normally rotate between several nodes in the United States, Germany, and Japan as if it were a walk in the park. If you findA node is always dropping out.The quality of the proxy IP is not good - it's time to switch to ipipgo's static residential IPs, which have survived long enough to withstand the rigors of the process.

Common Rollover Scene QA

Q: What should I do if I always get a connection timeout when testing?
A: Check the fire protection settings first, and then confirm the authorization mode of the proxy IP. ipipgo's API whitelisting function can avoid forensic problems, and it is recommended to enable the automatic IP binding mode.

Q: The load ratio and configuration parameters don't match?
A: 80% is the weight parameter did not eat through. Nginx weight parameter is relative value, 5:3 the actual ratio is 62.5% vs 37.5%, not absolute value oh!

Q: Is the geographic distribution of test results too concentrated?
A: Switch to ipipgo's dynamic IP pool, their residential IP pool covers 240+ countries and regions, and they want to measure the traffic distribution of small African countries to hold it.

The Metaphysical Doorway of Choosing IP

The worst thing about load testing is that you're going to run intoFake residential IPHere are three tips for you to verify your identity:

You don't need to bother with this if you use ipipgo, all of their IPs come with ASN certification and a hardcore guarantee for fake ones.

At the end of the day, load balancing testing is all about real traffic simulation. Instead of struggling to find IPs, it is better to let professionals like ipipgo play. Next time you do a stress test, remember to insure the proxy channel first, so that you don't have to test halfway through the test and be skeptical of unreliable IP pits.