Hi,
I am using a updates to a column with a ttl to represent a lock. The
owning process keeps updating the lock's TTL as long as it is running.
If the process crashes, the lock will timeout and be deleted. Then
another process can take over.
I have used this pattern very successfully over years with TTLs in the
order of tens of seconds.
Now I have a use case in mind that would require much smaller TTLs, e.g.
1 or two seconds and I am worried about the increased number of
mutations and possible effect on SSTables.
However: I'd assume these frequent updates on a cell to mostly happen in
the memtable resulting in only occasional manifestation in SSTables.
Is that assumption correct and if so, what config parameters should I
tweak to keep the memtable from being flushed for longer periods of
time?
Jan
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