hi, friends
I am design a message history table
CREATE TABLE message_history (
user_name text PRIMARY KEY,
time timestamp,
message_details list<text>,
);
so that I can query a user's message via primary key `user_name` at once.
but the item in `message_details` list may be very long so that I want to limit
the list size of the message_details list.
is there a way to solve this?
like a redis operation `LTRIM` -
http://redis.readthedocs.org/en/latest/list/ltrim.html
<http://redis.readthedocs.org/en/latest/list/ltrim.html>
