You can use expiring columns to say "only the last N seconds' of data." But not counts per se for the reasons Aaron gave.
On Mon, Jul 18, 2011 at 10:22 AM, JKnight JKnight <beukni...@gmail.com> wrote: > Dear all, > I want to keep only 100 column of a key: when I add a column for a key, if > the number column of key is 100, another column (by order) will be deleted. > Does Cassandra have setting for that? > > -- > Best regards, > JKnight > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com