Magento cache - how to disable this singleton(page identifier) cache?

Question

When cache is disabled, Mage::getSingleton('cms/page')->getIdentifier(); is working fine and i am getting correct page identifier for all pages.

But when cache is enabled, it is always returning the page identifier that's loaded first.

I am calling it in phtml files. Should it work fine in block classes?

Any workaround?

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Update:

Actually all code are being cached somehow AND I cant see any output of new code unless I flush or disable cache. So this does not seem to be an issue of this particular singleton object. On same server, another magento installation/project is fine with cache enabled and I can see uptodate immediately. I am looking into the issue. It might be any other setting or the theme that has come up with some extensions.

Answer 1

My entire navigation block was being cached and any changes I was making did not reflect on the frontend at all unless the cache are being cleared. But other phtml files were fine.

In my navigation block class I added the following code and it is now working as expected:

protected function _construct()
{
    parent::_construct();

    $this->addData(array(   'cache_lifetime' => null ));
}

The following link helped me to fix the issue: https://stackoverflow.com/a/25032002/1302297