Zend_Cache: does it make sense to use a permanent cache with Zend_Locale ?

[Timido]

Hello,
I'm not getting the purpouse of using Zend_Cache with Zend_Locale.

Well, I understand that probably getting locales informations is a heavy operation, ok. So let's cache the results.

What I dont understand, then, is: can I use a _permanent_ cache? I mean, a cache with a no-limit lifetime, where entries do never expire ?

Or are there actually needs to refresh the entries from the cache ?

thank you much.