HTTP conditional requests for Laravel — ETag, Last-Modified, 304 Not Modified, and lost-update protection with If-Match.
api php http middleware laravel rest-api laravel-package etag etags last-modified concurrency-control optimistic-locking http-cache if-modified-since rfc9110 if-none-match conditional-requests if-match http-caching not-modified
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Updated
Aug 26, 2026 - PHP