Forum vB_Datastore_Filecache
 

Quote:
vB_Datastore_Filecache
This option saves the datastore data in the /includes/datastore/datastore_cache.php file. Reading from the filesystem is generally less load-intensive than querying the database.

To use this option, you'll need to make sure that the /includes/datastore/datastore_cache.php file is writable and readable by PHP. Usually this is chmod 777. Then, uncomment the following line in the config.php file. // $config['Datastore']['class'] = 'vB_Datastore_Filecache';

must it be 777? will 644 work?

and how can I be sure it is working?