Version data, like source code. $ chd version mydb $ chd revert -d <txn_id> mydb Neither replication nor backups protect from accidentally deleting data.

Version data, like source code. $ chd version mydb $ chd revert -d <txn_id> mydb Neither replication nor backups protect from accidentally deleting data. And restoring from binary logs requires downtime. http://chronicdb.com/blogs/undelete_from_whoops http://chronicdb.com/blogs/undelete_from_whoops