I try to change smarty variable
in var/cache/registry/lang_cache/
Where can I edit the varaible vipshop_geolocation.address_placeholder ?
where are those variables stored ?
Thanks
You are committing two mistakes here.
First, you should not edit cache files as these files are being complied from original Smarty template files. Cache files are regulaly deleted/updated/recompiled automatically or from manually when you clear cache. Therefore, all changes should be made to Template files located in /design/themes/responsive/templates/
Second, what you are trying to update is a language variable which should not be chaned in code (unless you need to create custom and unique one). Language variables can be changed in the Admin Panel in Administration > Languages > Translations. Then search for the language pattern (in your case vipshop_geolocation.address_placeholder). If you found nothing, you can create a new one.