uwsgi_ignore_headers

The uwsgi_ignore_headers directive is used within NGINX to exclude certain headers from being passed on to the client when processing a response from a uWSGI application server. This directive can take one or more header names as arguments, specifying headers to ignore. When a specified header name appears in the uWSGI response, NGINX will not include it in the final response sent to the client, thus allowing for more fine-grained control over what information is exposed to clients.

This directive can be particularly useful for security and privacy considerations, as certain headers might contain information that should not be disclosed to the client, such as internal server statuses or application-specific metadata. Utilizing this directive in appropriate contexts—including http, server, and location blocks—enables system admins to tailor the behavior of NGINX when interfacing with uWSGI applications, ensuring only the necessary data is exposed while preventing sensitive information leaks.

Furthermore, the use of this directive can improve response time marginally by reducing the amount of data processed and sent back to the client. Careful selection of the headers to ignore can eliminate redundant transmission of information that may not be of interest or relevance to the end-user.