Improve Default Cache Plugin of Joomla 3.5 | Forum | FusoElektronique

<?php
jimport('joomla.environment.response');
JResponse::allowCache(true);
$time = time()- 1;
JResponse::setHeader('Last-Modified', gmdate('D, d M Y H:i:s', $time) . ' GMT', true);
JResponse::setHeader('Expires', 'Wed, 17 Aug 2005 00:00:00 GMT', true);
JResponse::setHeader('Cache-Control', 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0, max-age=0', false );
JResponse::setHeader('Pragma', 'no-cache', true );
?>

// If the response is set to uncachable, we need to set some appropriate headers so browsers don't cache the response.
		if (!$this->response->cachable)
		{
			// Expires in the past.
			//$this->setHeader('Expires', 'Wed, 17 Aug 2005 00:00:00 GMT', true);

			// Always modified.
			// $this->setHeader('Last-Modified', gmdate('D, d M Y H:i:s') . ' GMT', true);
			// $this->setHeader('Cache-Control', 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0', false);

			// HTTP 1.0
			$this->setHeader('Pragma', 'no-cache');
		}
		else
		{
			// Expires.
			// $this->setHeader('Expires', gmdate('D, d M Y H:i:s', time() + 900) . ' GMT');

			// Last modified.
			if ($this->modifiedDate instanceof JDate)
			{
				$this->setHeader('Last-Modified', $this->modifiedDate->format('D, d M Y H:i:s'));
			}
		}

/**
	 * Set the ETag header in the response
	 *
	 * @param   string  $etag  The entity tag (etag) to set
	 *
	 * @return  void
	 *
	 * @since   11.1
	 */
	protected function _setEtag($etag)
	{
	       jimport('joomla.environment.response');
               JResponse::allowCache(true);
               JResponse::setHeader('Cache-Control', 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0, max-age=0', false );
	       JResponse::setHeader('Pragma', 'no-cache', true );
	       $etagFuso = md5($id);
	       JResponse::setHeader('ETag', 'W/"'.$etagFuso.'"', true );
		
	}
	
}