Since the page was cached by memcache, I did not expect to cache the admin-bar and auth_key in the header after login ....
To remove admin-bar, if your blog only has one administrator, you can go to the user settings to check whether the check box is displayed... If you are a multi-administrator, it would be difficult to do so. It would be too troublesome for everyone... You can directly modify the wp-include/admin-bar.php file and return false directly in the first function _ wp_admin_bar_init,
Like this:
If initialization fails, the admin bar will not be loaded, and 20 px blank lines will not be left on the page ....
For more information about automatic login, this problem is caused by caching the auth_key, as long as wp-content/plugins/duoshuo/WordPress. comment out the key array in the buildQuery method of the php file ..... Just like this