Multiple DB connections and caching

[eluser]skunkbad[/eluser]
[quote author="Narf" date="1352797159"]https://github.com/EllisLab/CodeIgniter/...d8acdd7ca6

How about now?[/quote]

Hey, cool. I knew I was on to something there. I've never used caching, so I thought I'd play around with it and see how it works (and doesn't work).

I do have a suggestion. In the check_path method of DB_Cache, where the if statement checks if the path is a dir and is writable, it would be nice if those were separated out, and if there was a log_message, show_error, or something to make it more obvious which failed. In my own testing, I found this useful:

Code:

if ( ! is_dir($path) )
{
\CI\DB::log('Cache Path Error: ' . $path );

// If the path is wrong we'll turn off caching
return $this->db->cache_off();
}

if ( ! is_really_writable($path) )
{
\CI\DB::log('Cache Dir Not Writable: ' . $path );

// If the path is not really writable we'll turn off caching
return $this->db->cache_off();
}

I've obviously been playing around with some customization, but it was helpful when setting up caching, and other people might think so too.