For me, I think the last one : Snapshot + Incremental + commitlog is the most meaningful way to do backup and restore, when you make the data backup to some where else like AWS S3.
- Snapshot based backup // for incremental data will not be backuped and may lose data when restore to the time latter than snapshot time; - Incremental backups // better than snapshot backup .but with Insufficient data accuracy. For data remain in the memtable will be lose; - Snapshot + incremental - Snapshot + commitlog archival // better data precision than made incremental backup, but the data in the non archived commitlog(not archive and commitlog log not closed) will not restore and will lose. Also when log is too much, do log reply will cost very mucu time For me ,We use snapshot + incremental + commitlog archive. We read snapshot data and incremental data .Also the log is backuped .But we will not backup the log whose data have been flush to sstable ,for the data will be backuped by the way we do incremental backup . This way , the data will exist in the format of sstable trough snapshot backup and incremental backup . The log number will be very small .And log replay will not cost much time. Eric LELEU <e...@strapdata.com> 于2019年11月27日周三 下午4:13写道： > Hi, > TheLastPickle & Spotify have released Medusa as Cassandra Backup tool. > > See : > https://thelastpickle.com/blog/2019/11/05/cassandra-medusa-backup-tool-is-open-source.html > > Hope this link will help you. > > Eric > > > Le 27/11/2019 à 08:10, Adarsh Kumar a écrit : > > Hi, > > I was looking for the backup strategies of Cassandra. After some study I > came to know that there are the following options: > > - Snapshot based backup > - Incremental backups > - Snapshot + incremental > - Snapshot + commitlog archival > - Snapshot + Incremental + commitlog > > Which is the most suitable and feasible approach? Also which of these is > used most. > Please let me know if there is any other option to tool available. > > Thanks in advance. > > Regards, > Adarsh Kumar > > -- you are the apple of my eye !
