After upgrade magento from 184.108.40.206 to 220.127.116.11
In Phpmyadmin I just notice the size of core_session table grows fast than normal
I trustate data in core_session now , before , it reach 450MB and 250MB ….
Unknow what happen , at last have to ask a friend , he told me :
We do not recommend storing sessions in the database unless running a multi-store. You should see a performance benefit from storing sessions in the file-system. You can do this by editing your app/etc/local.xml, line 51 below.
You may need to clear var/cache and can potentially truncate the core_session table subsequent to this change. This will be our only recommended solution to the issue you are describing.
I do according he says , it is work !
Now , I have my author name : Winsion Liang 🙂 , link here Winsion Liang