$google_schema_reverse

Description

The $google_schema_reverse variable is utilized within the NGINX Google filter module to manage the directionality of Google schema implementations during the processing of requests. This variable is set when specific conditions in the NGINX configuration trigger its behavior, such as when certain request URIs or parameters are matched according to predefined patterns in the module's logic. If activated, the variable influences how the schema information is represented in the HTTP response, particularly determining if it should reflect a 'reverse' mapping or interpretation of the default Google schema. Typically, the values of $google_schema_reverse can be either 'true' or 'false', allowing for a straightforward conditional check in configuration files. This enables finer control over how NGINX interacts with requests meant for Google services, particularly when there's a need to present or handle schema data differently depending on the application's requirements, such as compatibility or reverse indexing needs for search engines. This capability ensures that end-users may navigate the mirrored Google experience with the desired schema representation servicing their specific use case.

Config Example

location / {  
    google on;  
    if ($google_schema_reverse) {  
        # Additional configuration for reverse schema processing  
        add_header X-Google-Schema 'Reversed';  
    }  
}