codeigniter cache returns always empty

Question

I'm try to use the Codeigniter cache system, to cache some remote xml files into "file cache".

Every think looks great when I request the xmls, but codeigniter not cache the files, instead it return a empty cache, and the cache file contains just the data below:

a:3:{s:4:"time";i:1379515910;s:3:"ttl";i:120;s:4:"data";b:1;}

I'm using the code below to cache the xml:

$this->load->driver('cache');
$this->cache->file->save('first', $data, 120);

[UPDATED]

Now I can save the cache, but I can't rescue the saved data. When I run the command below the cache return false

$this->cache->get('show');

Where am I going wrong?

Thanks.

Answer 1

You've saved it using

$this->cache->file->save('first', $data, 120);

Then get it using the right key and it should be first

$this->cache->get('first');

Also, to get information about cache you can use

var_dump($this->cache->cache_info());

Or you may use

var_dump($this->cache->get_metadata('first'));

This is useful for debugging. The get method accepts cache_item_id as parameter that you have used when you saved it

get(id['string'])

Check the documentation.

Answer 2

Problem solved, when I call the method to get the current cache I need to pass the used driver e.g.:

$this->cache->file->get('home');
OR
$this->cache->memcached->get('home');

Thanks.