jQuery AJAX cache:false and RESTful query parameter validation
0 reputation · 08 Feb 2026, 11:45 UTC
jQuery manages AJAX caching primarily through the cache option. When set to false for GET requests, the library automatically appends a unique timestamp via the _t parameter to the URL. This is intended to bypass browser-level caching to ensure fresh data retrieval.
However, this mechanism creates conflict when integrating with RESTful APIs that enforce strict query parameter validation. If the server is not configured to ignore unknown parameters, the injected timestamp can trigger a 400 Bad Request error. Furthermore, intermediate layers like CDNs or reverse proxies may treat each unique query string as a distinct resource, undermining the effectiveness of server-side caching strategies.
Is there a documented way to bypass the browser-level cache in jQuery without modifying the query string?
Does jQuery provide a native configuration to utilize standard HTTP Cache-Control headers instead of timestamp-busting?