Hi Jeff
Thanks a lot for all these details, they are really helpful. My
understanding is that the number of windows is a tradeoff between the
amount of data waiting for expiration and the number of sstables required
to satisfy a read request.
In my case the data model does have a timestamp
So when I wrote TWCS, I wrote it for a use case that had 24h TTLs and 30
days of retention. In that application, we had tested 12h windows, 24h
windows, and 7 day windows, and eventually settled on 24h windows because
that balanced factors like sstable size, sstables-per-read, and expired
data
Hi All!
According to TWCS documentation (
https://cassandra.apache.org/doc/latest/cassandra/operating/compaction/twcs.html)
the operator should choose compaction window parameters to select a
compaction_window_unit and compaction_window_size pair that produces
approximately 20-30 windows.
I'm
