modern_browser
The 'modern_browser' directive allows fine-tuning of compatibility for modern web browsers in NGINX.
Description
The 'modern_browser' directive is used within the NGINX configuration to specify which browsers should be considered modern and treated differently when handling requests. It can enhance the performance of web applications by enabling or disabling certain features or behaviors based on client capabilities. This directive can accept one or two parameters, allowing users to define the specific conditions under which certain optimizations or rules apply for modern browsers. For instance, if a request comes from a recognized modern browser, NGINX can adjust its response or routing behavior accordingly.
When configuring the directive, if one parameter is specified, it indicates the browser version, while the second optional parameter can define additional compatibility settings. The directive is applicable in various contexts, including HTTP, server, and location blocks, and allows administrators to optimize server responses based on the user's browser, potentially enhancing the overall user experience by leveraging modern technologies such as HTTP/2 or specific cache mechanisms. Proper understanding of user-agent strings and browser capabilities is crucial for effectively leveraging this directive.
Config Example
server {
location / {
modern_browser Firefox 90;
}
}Ensure that the user-agent strings are correctly specified to avoid unexpected behavior.
Using broad terms may inadvertently affect older browsers if not configured properly.