if you want to store all the roles in one row, you can do
create table roles (synthetic_key int, name text, primary
key(synthetic_key, name)) with compact storage
when inserting roles, just use the same key
insert into roles (synthetic_key, name) values (0, 'Programmer');
insert into roles (synthetic_key, name) values (0, 'Tester');
and use
select * from roles where synthetic_key = 0;
(or some arbitrary key value you decide to use)
the that data is stored on one node (and its replicas)
of course if the number of roles grows to be large, you lose most of the
value in having a cluster.
On 05/04/2013 12:09 PM, Jabbar Azam wrote:
Hello,
I want to create a simple table holding user roles e.g.
create table roles (
name text,
primary key(name)
);
If I want to get a list of roles for some admin tool I can use the
following CQL3
select * from roles;
When a new name is added it will be stored on a different host and
doing a select * is going to be inefficient because the table will be
stored across the cluster and each node will respond. The number of
roles may be less than or just greater than a dozen. I'm not sure if
I'm storing the roles correctly.
The other thing I'm thinking about is that when I've read the roles
once then I can cache them.
Thanks
Jabbar Azam
