Although the files setting for sessions in Magento is great, you may want to use Memcache.
Using your database or db for sessions is not recommended.
- Log into the server or access your Magento files via FTP/SFTP.
- Open local.xml for the Magento install you want to set to Memcache sessions.
- Change the existing “sessions” line to this (see below code block), adjusting the IP and port appropriately.