How to configure concurrent connections in nginx?

To adjust the number of concurrent connections for nginx, you can configure the following two parameters.

1. The parameter “worker_processes” determines the number of worker processes in nginx, each capable of handling concurrent connections. This setting can be configured by adding the “worker_processes” directive in the http block of the nginx configuration file. For instance, to set it to 4 worker processes: “worker_processes 4;”.
2. The parameter worker_connections specifies the maximum number of concurrent connections that each worker process can handle. You can set this by adding the directive worker_connections within the http block in the nginx configuration file. For example, to set it to 1024 concurrent connections: worker_connections 1024;

Caution: When setting the number of concurrent connections, it is important to adjust it based on the server’s hardware configuration and load situation. Excessive concurrent connections may lead to insufficient server resources or decreased performance, while too few concurrent connections may limit the server’s processing capabilities.

Additionally, if your server is configured with devices like firewalls or load balancers that limit concurrent connections, you may need to adjust the settings of these devices to match nginx’s concurrent connection settings.