Playing with Redis scripting branch

The new Redis' scripting feature is what i was looking for to reduce network latency bottleneck.

- Store something in a key based on the result of an incr call:

./redis-cli eval "t = redis('incr','x')
>redis('set','key_' .. t,'value')
> return 'key_' .. t" 0

This is expecially useful when you're storing a complex object with a unique id using redis hash type:

./redis-cli eval "t = redis('incr','user_id')
> redis('hmset','user:' .. t,'username','user','password','pass')
> return t" 0
(integer) 2

./redis-cli hgetall user:2
1) "username"
2) "user"
3) "password"
4) "pass"

- Startswith index (i'll talk about it in a next post):

 
./redis-cli zadd startswith_index 0 anthony
./redis-cli zadd startswith_index 0 bert
./redis-cli zadd startswith_index 0 carl
./redis-cli zadd startswith_index 0 carlton
./redis-cli zadd startswith_index 0 peter

./redis-cli eval "redis('zadd','startswith_index','0','car')
> r = redis('zrank','startswith_index','anth')
> ret = redis('zrange','startswith_index',tonumber(r)+1,'-1')
> redis('zrem','startswith_index','anth')
> return ret" 0
1) "carl"
2) "carlton"
3) "peter"