I'm using MardiaDB and i'm wondering if there is a way how to install a 'recycle bin' on my server where if someone deleted a table or anything it gets shifted to the recycle bin and restoring it is easy.
Not talking about mounting things to restore it and all that stuff but litterly a 'save place' where it gets stored (i have more then enough space) until i decide to delete it or just keep it there for 24 hours.
Any thoughts?
No such feature exists. http://bugs.mysql.com takes "feature requests".
Such a feature would necessarily involve MySQL; it cannot be done entirely in the OS's filesystem. This is because a running mysql caches information in RAM that the FS does not know about. And because the information about a table/db/proc/trigger/etc is not located entirely in a single file. Instead extra info exists in other, more general, files.
With MyISAM, your goal was partially possible in the fs. A MyISAM table was composed of 3 files: .frm
, .MYD',
.MYI`. Still MySQL would need to flush something to forget that it know about the table before the fs could move the 3 files somewhere else. MyISAM is going away; so don't even think about using that 'Engine'.
In InnoDB, a table is composed of a .ibd
file (if using file_per_table) plus a .frm
file, plus some info in the communal ibdata1
file. If the table is PARTITIONed
, the layout is more complex.
In version 8.0, most of the previous paragraph will become incorrect -- a major change is occurring.
"Transactions" are a way of undoing writes to a table...
BEGIN;
INSERT/UPDATE/DELETE/etc...
if ( change-mind )
then ROLLBACK;
else COMMIT;
Effectively, the undo log acts as a recycle bin -- but only at the record level, and only until you execute COMMIT
.
MySQL 8.0 will add the ability to have DDL statements (eg, DROP TABLE
) in a transaction. But, again, it is only until COMMIT
.
Think of COMMIT
as flushing the recycle bin.