is there a way to set a members limit on a redis sorted set?

Say I want to store the 10 most recent additions to a redis sorted set where the 11th addition pushes the 1st off the list. And until it reaches 10 items it just grows normally.

Do I have to check the length on each addition myself and delete the 1st element?

I don't think you need to check the length, but have to cap it yourself:

`ZREMRANGEBYRANK [KEY] 0 -10`

if you just need to remove first member into ZSet
you can use this command :

ZREMRANGEBYRANK key 0 0

you can also sort 11th element as first member in ZSet using ZADD with score 1 :

ZADD key 1 member

EX:

>
redis 127.0.0.1:6379> ZADD myzset 1 one
(integer) 1
redis 127.0.0.1:6379> ZADD myzset 1 two
(integer) 1
redis 127.0.0.1:6379> ZRANGE myzset 0 -1 withscores
1) "one"
2) "1"
3) "two"
4) "1"
redis 127.0.0.1:6379> ZREMRANGEBYRANK myzset 0 0
(integer) 1
redis 127.0.0.1:6379> ZADD myzset 1 three
(integer) 1
redis 127.0.0.1:6379> ZRANGE myzset 0 -1 withscores
1) "three"
2) "1"
3) "two"
4) "1"