Caching of Recordsets with Reactor Caching Driver

[eluser]wapatv[/eluser]
Hi!

I'm developing our new site using CI Reactor. Previously we used no framework, but did used ADOdb Database Abstraction Library for dealing with the db and the queries.

ADOdb has a feature where I can cache recordsets for a period of time (http://bit.ly/hSQX0f).

I was reading about Reactor's new Caching Driver, but I don't know if it fits my need similar to what I used to to with the ADOdb's Recordsets caching.

Here is a sample controller function I did using Caching Driver.

Code:

function news_list($catid, $limit, $offset) {
        $this->load->driver('cache');
        $this->load->model('News_model');

        if (!$data = $this->cache->file->get('news_lists')) {
            echo 'Saving to the cache!<br />';
            $data['list'] = $this->News_model->get_news_list($catid, $limit, $offset);

            // Save into the cache for 5 minutes
            $this->cache->file->save('news_lists', $data, 300);
        }

        $this->load->view('loop_news', $data);
    }

When I load the URL:
ie: http://localhost/news/news_list/14/50/0

The cache file is saved and request after that are loaded from the cached file. So thats good...

My issue is that if I request another params:
ie: http://localhost/news/news_list/18/50/50

I get the same results from the previously cached, because it sees no difference between them. Since the saved cache name is always the same (news_lists), regardless that the requesting params are different and the data returned is other.

In ADOdb, the name of the cached file was unique for each query requested. So if I requested the same page with different query params, it would save them separately.

What options could I have to accomplish something similar to what I'm looking for?

Thanks!

[eluser]wapatv[/eluser]
I did this change and I could say "it works"... buts, is there a cleaner/better way to do this?

Code:

function news_list($catid, $limit, $offset) {
        $this->load->driver('cache');
        $this->load->model('News_model');

        if (!$data = $this->cache->file->get("news_list_$catid$limit$offset")) {
            echo 'Saving to the cache!<br />';
            $data['list'] = $this->News_model->get_news_list($catid, $limit, $offset);

            // Save into the cache for 5 minutes
            $this->cache->file->save("news_list_$catid$limit$offset", $data, 300);
        }

        $this->load->view('loop_news', $data);
    }

Notice that I changed the save file to have the same params I sent to the function. Meaning that for the URL:
http://localhost/news/news_list/14/50/0
will save a cached file named "news_list_14500"

and http://localhost/news/news_list/18/50/50
will save a file named "news_list_185050"

Being both different cache files based on different params.

Is that any optimal?