Provide tools for translation and display of text in multiple languages and support for regionalization/localization for dates, numbers, currency, measurement, or other local contexts.
Locale Cache module provides more efficient and flexible locale data (translations) caching. Based on code from the core D6 locale module.
You will probably get most benefits of this module only using a fast cache backend like APC, Memcache, Redis, MongoDB, etc.
Requires small patch to core to make it use our function instead of locale().