protected static function getKey(RequestInterface $request)
    {
        // Generate headerline for the cache key. X- headers are ignored except those included in the Vary
        $vary = array_flip($request->getHeader('Vary'));
        $headerLine = implode('', array_map(
            [$request, 'getHeaderLine'],
            array_filter(
                array_keys($request->getHeaders()),
                function ($header) use ($vary) {
                    return (0 !== stripos($header, 'x-')
                        || array_key_exists($header, $vary)
                    );
                }
            )
        ));

        return $request->getMethod().'-'.$request->getUri().'-'.md5($headerLine);
    }
protected static function getKey(RequestInterface $request)
    {
        // Generate headerline for the cache key. X- headers are ignored except those included in the Vary
        $vary = array_flip($request->getHeader('Vary'));
        $headerLine = implode('', array_map(
            [$request, 'getHeaderLine'],
            array_filter(
                array_keys($request->getHeaders()),
                function ($header) use ($vary) {
                    return (0 !== stripos($header, 'x-')
                        || array_key_exists($header, $vary)
                    );
                }
            )
        ));

        return $request->getMethod().'-'.$request->getUri().'-'.md5($headerLine);
    }
protected static function getKey ( RequestInterface $ request ) { // Generate headerline for the cache key. X- headers are ignored except those included in the Vary $ vary = array_flip ( $ request -> getHeader ( 'Vary' ) ) ; $ headerLine = implode ( '' , array_map ( [ $ request , 'getHeaderLine' ] , array_filter ( array_keys ( $ request -> getHeaders ( ) ) , function ( $ header ) use ( $ vary ) { return ( 0 !== stripos ( $ header , 'x-' ) || array_key_exists ( $ header , $ vary ) ) ; } ) ) ) ; return $ request -> getMethod ( ) . '-' . $ request -> getUri ( ) . '-' . md5 ( $ headerLine ) ; }
Get cache key

@param RequestInterface $request

@return string
Get cache key