Caching a query result

This would really depend on your queries and amount of rows you have, and how you're implementing the filter. Some filters only allow you to filter one thing at a time, but some allow you to filter multiple.

If your filter only allows one at a time, you could do something like this:

$minutes = 60 * 24 * 7;
$option = $request->option;
$cacheNamespace = isset($option) ? "some:results:{$option}" : "some:results";

return Cache::remember($cacheNamespace, $minutes, function() use($option) {
    if (is_null($option)) 
        return Model::all();
    }

    return Model::where($option, '=', 'value')->get();
});

If you take multiple options, you could still do something similar. This approach can be beneficial, but depending on your situation, caching all the results and filtering through there may be better.