Setting the Last-Modified header and 304 Not Modified response code if the page hasn't changed since the last visit
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Updated
Dec 23, 2024 - PHP
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304-not-modified
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PSR-15 HTTP caching middleware with ETag support and RFC 7234 compliance. Automatic ETag generation (MD5/SHA256), 304 Not Modified responses, Cache-Control builder. Framework-agnostic, zero configuration, production-ready. Works with any PSR-15 application.
php middleware packagist composer etag psr-15 cache-control framework-agnostic rfc-7234 php8 http-cache 304-not-modified conditional-requests
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Updated
Nov 27, 2025 - PHP
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