Reverse Proxy Server: Reverse Proxy Server Tutorial | Load Balancing and Security Acceleration

What the hell is a reverse proxy?

The old iron engaged in website operation and maintenance must have heard of this word, but newbies are easy to confuse it with the ordinary proxy. Simply put, the reverse proxy is like a courier station in front of your neighborhood - the user to find you want something, the station first help you to receive and check and then forwarded, which protects the privacy of your home address, but also allows the courier brother does not have to run to your home every day legs.

There is a good thing about using ipipgo's residential IP as a reverse proxy: for example, if your server is in Tokyo, but your users are concentrated in Brazil, then set up a proxy node in Rio de Janeiro, and the speed of the user's access will take off directly. We have tested the use of dynamic residential IP deployment of reverse proxy, latency can cut 40% or more.

Teach you how to build a reverse proxy

Take Nginx for example, old drivers love this. Start by installing nginx on your server, then find the/etc/nginx/nginx.confThis configuration file. See this paragraph for the key configuration:

location / {
    proxy_pass http://你的真实服务器IP:端口; proxy_set_header Host $host; proxy_set_header
    proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header
    proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Real-IP $remote_addr.
}

There is a pitfall to be reminded here: if you use ipipgo's Dynamic Residential IP, remember to check the box in the Advanced Settings.long connection modeOtherwise, frequent IP changes may result in connection interruptions. Previously, a customer did not pay attention to this, the results of the log is full of 502 errors, troubleshooting for three days to find the problem.

Playing with load balancing with ipipgo

Can't handle the traffic on a single server? Just get on load balancing! Configure ipipgo's multiple residential IPs into a node pool, and the traffic distribution strategy can play out like this:

To cite a real-world case: a cross-border e-commerce customer, using our UK+Germany residential IP pool to do load balancing, automatically allocating nodes according to the user's language, the page load time from 8 seconds down to within 2 seconds.

Safe acceleration of the tawdry operation

Reverse proxies don't just speed up, they act as security shields. Share three top tips:

1. Configure in nginxIP whitelistingIf you want to access the source site, only allow ipipgo's residential IPs to access the source site.
2. Setting access frequency limits and automatically switching alternate IPs when the threshold is exceeded
3. When enabling the TCP protocol proxy, remember to open ourtraffic confusionfunctionality

Recently helped a game company to do the program used this trick: the front-end with our dynamic residential IP as a proxy layer, the back-end server is not exposed to the public network at all, DDoS attacks directly down 90%.

Frequently Asked Questions QA

Q: Why does my website slow down after I use a reverse proxy?
A: 80% is not the right choice of nodes! For example, the user is mainly in Southeast Asia but used the European node, this situation in ipipgo background switch to Singapore/Malaysia residential IP immediately effective.

Q：After configuring the reverse proxy access a 403 error occurs?
A: Check three places: 1. IP whitelist whether to include the proxy IP 2. protocol type whether to match (http/https) 3. fire there is no release ipipgo IP segment

Q: How to choose between dynamic IP and static IP?
A> need a high degree of anonymity to choose dynamic (such as crawler business), to stabilize the connection with static (such as live video). ipipgo both support, the background at any time to switch without having to reconfigure.

Finally nagging sentence: reverse proxy configuration remember to do the stress test, with our residential IP pool of different nodes to simulate real user access. Once the customer configuration are correct, the results because the number of TCP connections did not adjust enough, 200 people online at the same time on the collapse, this is a lesson in tears ah!