Also in they are being read before compaction: http://docs.datastax.com/en/cql/3.1/cql/cql_using/use_expire_c.html <http://docs.datastax.com/en/cql/3.1/cql/cql_using/use_expire_c.html>
Hannu > On 8 Nov 2016, at 16.36, DuyHai Doan <doanduy...@gmail.com> wrote: > > "Does TTL also cause tombstones?" --> Yes, after the TTL expires, at the next > compaction the TTLed column is replaced by a tombstone, as per my > understanding > > On Tue, Nov 8, 2016 at 3:32 PM, Ali Akhtar <ali.rac...@gmail.com > <mailto:ali.rac...@gmail.com>> wrote: > Does TTL also cause tombstones? > > On Tue, Nov 8, 2016 at 6:57 PM, Vladimir Yudovin <vla...@winguzone.com > <mailto:vla...@winguzone.com>> wrote: > >The deletes will be done at a scheduled time, probably at the end of the > >day, each day. > > Probably you can use TTL? > http://docs.datastax.com/en/cql/3.1/cql/cql_using/use_expire_c.html > <http://docs.datastax.com/en/cql/3.1/cql/cql_using/use_expire_c.html> > > Best regards, Vladimir Yudovin, > Winguzone <https://winguzone.com/?from=list> - Hosted Cloud Cassandra > Launch your cluster in minutes. > > > ---- On Tue, 08 Nov 2016 05:04:12 -0500Ali Akhtar <ali.rac...@gmail.com > <mailto:ali.rac...@gmail.com>> wrote ---- > > I have a use case where a lot of updates and deletes to a table will be > necessary. > > The deletes will be done at a scheduled time, probably at the end of the day, > each day. > > Updates will be done throughout the day, as new data comes in. > > Are there any guidelines on improving cassandra's performance for this use > case? Any caveats to be aware of? Any tips, like running nodetool repair > every X days? > > Thanks. > > >
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