How to backup MySQL (mysqldump) when Memcached installed?
- by cewebugil
The server OS is CentOS, with Memcached installed
Before Memcached installed, I use
mysqldump -u root -p --lock-tables --add-locks --disable-keys --skip-extended-insert --quick wcraze > /var/backup/backup.sql
But now, Memcached has been installed.
According to Wikipedia;
When the table is full, subsequent
inserts cause older data to be purged
in least recently used (LRU) order.
This means new data entry is not directly saved in MySQL, but saved in Memcached instead, until limit_maxbytes is full, the least accessed data will be saved in MySQL.
This means, some data is not in the MySQL but in Memcached. So, when backup, the new entry is not in the backup data
What is the right way to backup?
