Basic Concepts of Reverse Proxy

Before proceeding with Nginx reverse proxy performance optimization, you first need to understand what a reverse proxy is. Simply put, a reverse proxy is a proxy server that receives requests from clients, then forwards those requests to an internal server and returns the internal server's response to the client.Nginx, as a high-performance reverse proxy server, is able to efficiently manage and distribute requests to improve the performance and security of your website.

Performance Optimization Tips

1. Use of caches

Nginx provides powerful caching features that can greatly reduce the burden on internal servers and improve the responsiveness of websites. By setting cache rules in the Nginx configuration file and enabling caching in the reverse proxy configuration, you can effectively improve website performance.

proxy_cache_path /path/to/cache levels=1:2 keys_zone=my_cache:10m max_size=10g inactive=60m;
server {
...
location / {
proxy_cache my_cache; proxy_cache_valid 200
proxy_cache_valid 200 1h;
proxy_pass http://backend; }
}
}

2. Load balancing

With load balancing, Nginx can distribute requests to multiple internal servers to achieve triage and increase the concurrent processing power of a website. Configuring upstream in the Nginx configuration file and specifying load balancing policies in the reverse proxy configuration can effectively optimize website performance.

upstream backend {
server 127.0.0.1:8080; server 127.0.0.1:8081;
server 127.0.0.1:8080; server 127.0.0.1:8081;
...
}

server {
...
location / {
proxy_pass http://backend; }
}
}

3. Compressed transmission

Nginx supports compression of transmitted data to reduce transmission traffic and improve the loading speed of websites. Enabling compression in the Nginx configuration file and setting the type of compression and minimum file size can effectively improve the performance of your website.

“`
gzip on.
gzip_types text/plain application/javascript.
gzip_min_length 10240.
“`

With the above reverse proxy performance optimization techniques, we can effectively improve the performance of the website and user experience, speed up the response time of the website and reduce the server load. Reasonable configuration of Nginx reverse proxy, combined with caching, load balancing and compressed transmission and other techniques, can better play the advantages of Nginx, to provide users with more stable and efficient service.