Now that it is moved... Here's the answer you're looking for
Config file suggested in the
tips thread consists two parts:
PHP:
$config['cache']['frontend'] = 'Core';
$config['cache']['frontendOptions'] = array('caching' => true,
'automatic_serialization' => true,
'lifetime' => 1800
);
PHP:
$config['cache']['backend'] = 'File';
$config['cache']['backendOptions'] = array('cache_dir' => 'D:\xampp\xampp\htdocs\xf\upload\library\cache');
First part configures the settings about your cache. Generally speaking, you'd probably only need to change lifetime (how long your cache stays alive in the system) unless you have some very specific things you're trying to do.
Second part is more specific, and you would need to configure it according to your needs. The first line:
PHP:
$config['cache']['backend'] = 'File';
...tells the system what kind of cache backend you are intending to use. They are listed on
the page you've linked. You take the last bit of what it says on the list and enter it into your parameter. In your particular case, for example, you would want to enter:
PHP:
$config['cache']['backend'] = 'Xcache';
Then, the backendOptions is the options array that you'd use to fine-tune your settings. For Xcache, there are two options:
user, and
password. So, you would want to enter them like this:
PHP:
$config['cache']['backendOptions'] = array(
'user' => 'YOUR_XCACHE_USERNAME',
'password' => 'YOUR_XCACHE_PASSWORD'
);
Replace the capital letters part with your information accordingly, save, and upload.