Nginx load balancing multiple policy configurations to optimize website performance
Overview:
With the rapid development of the Internet, the number of visits to the website is also increasing. In order to meet the needs of users and improve the availability and performance of the website, we can use load balancing to share the load pressure of the server. Nginx is a high-performance web server and reverse proxy server. It provides a variety of load balancing strategies for us to choose from. This article will introduce several Nginx load balancing strategy configurations, with code examples.
http { upstream backend { server 192.168.1.1; server 192.168.1.2; server 192.168.1.3; } server { listen 80; server_name example.com; location / { proxy_pass http://backend; } } }
least_conn
to implement the least connection strategy. The configuration method is as follows:http { upstream backend { least_conn; server 192.168.1.1; server 192.168.1.2; server 192.168.1.3; } server { listen 80; server_name example.com; location / { proxy_pass http://backend; } } }
ip_hash
to implement IP hashing strategy. The configuration method is as follows:http { upstream backend { ip_hash; server 192.168.1.1; server 192.168.1.2; server 192.168.1.3; } server { listen 80; server_name example.com; location / { proxy_pass http://backend; } } }
http { upstream backend { server 192.168.1.1 weight=3; server 192.168.1.2 weight=2; server 192.168.1.3 weight=1; } server { listen 80; server_name example.com; location / { proxy_pass http://backend; } } }
Summary:
By reasonably selecting and configuring load balancing strategies, we can optimize the performance of the website and improve the user's access experience. As a high-performance web server and reverse proxy server, Nginx provides a variety of load balancing strategies for us to choose from. This article introduces several common strategies such as polling, least connections, IP hashing and weighted polling, and provides corresponding Nginx configuration examples. I hope this article can be helpful to everyone's study and work.
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