Agree, change the last_time to be descending order will help, you can also TTL the data, so that the old records will be purged by Cassandra.
--Dikang. On Mon, Nov 7, 2016 at 10:39 PM, Alain Rastoul <alf.mmm....@gmail.com> wrote: > On 11/08/2016 03:54 AM, ben ben wrote: > >> Hi guys, >> CREATE TABLE recent ( >> user_name text, >> vedio_id text, >> position int, >> last_time timestamp, >> PRIMARY KEY (user_name, vedio_id) >> ) >> >> > Hi Ben, > > May be a clustering columns order would help > CREATE TABLE recent ( > ... > ) WITH CLUSTERING ORDER BY (last_time DESC); > So you can query only the last 10 records > SELECT * FROM recent WHERE vedio_id = xxx LIMIT 10 > > See here http://www.datastax.com/dev/blog/we-shall-have-order > -- > best, > Alain > -- Dikang
