Conditional Requests
← Back to HTTP Caching
HTTP requests that include conditions (If-None-Match with ETag, If-Modified-Since with Last-Modified). The server returns 304 Not Modified if the resource has not changed, avoiding data transfer.
← Back to HTTP Caching
HTTP requests that include conditions (If-None-Match with ETag, If-Modified-Since with Last-Modified). The server returns 304 Not Modified if the resource has not changed, avoiding data transfer.