Hi, I have been set range_offset_limit 100 MB, and maximum_object_size 100MB, then make a HTTP request to fetch a file(9MB) using php the code: test.php(client) <?php $fp = fsockopen("file.test.com", 8080, $errno, $errstr, 30); if (!$fp) { echo "$errstr ($errno)\n"; } else { $out = "GET /range-test.php HTTP/1.1\r\n"; $out .= "Host: file1.rs.up.jp\r\n"; $out .= "Accept: */*\r\n"; $out .= "User-Agent: Mozilla/4.0 (compatible; MSIE 5.00; Windows 98)\r\n"; $out .= "Range: bytes=1024-7341056\r\n"; $out .= "Connection: Close\r\n\r\n"; fwrite($fp, $out); while (!feof($fp)) { $data .= fgets($fp, 102400); } fclose($fp); } file_put_contents('f_squid.3gp', $data); ?> range-test.php(back-end server): <?php ... header('Expires: '.gmdate('D, d M Y H:i:s \G\M\T', time() + 31536000)); header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT'); echo $data; ... ?> I found that squid prefetch the whole file from back-end server, but the file is not cached in cache_dir log message from store.log: 1214388930.927 RELEASE 00 00000000 D5E9CBAE9BAE59F13704ED768E93755F 200 1214388928 -1 1245924928 text/html 9705468/7394261 GET http://file.test.com:8080/range-test.php when I run test.php the 2nd time, squid still fetch file from back-end server. What's the matter ?