NGINX SSL/TLS Optimization: ssl_preread_server_name Explained

ssl_preread_server_name is a feature in NGINX that enables the SSL/TLS handshake to occur before the server name is known. This allows NGINX to select the appropriate SSL/TLS certificate to use based on the server name provided by the client during the SSL/TLS handshake.

This feature is particularly useful for servers that host multiple domains or subdomains, as it allows NGINX to select the correct SSL/TLS certificate without having to wait for the client to send the Host header.

By using 'ssl_preread_server_name', NGINX can handle SSL/TLS requests more efficiently and reduce latency, resulting in a better user experience.