The Little Known Secret of Redis

It’s the redis-benchmark. In Salvatore’s words:

a little known feature of redis-benchmark introduced recently by Pieter Noordhuis is that you can benchmark any command you want (only available in Redis unstable branch, but you can use redis-benchmark from unstable to benchmark Redis 2.4.x):

 $ ./redis-benchmark -q -n 100000 zadd sortedset 10 a 
 zadd sortedset 10 a: 152439.02 requests per second

To compare it with another command:

 $ ./redis-benchmark -q -n 100000 set foo bar 
 set foo bar: 153374.23 requests per second

However you can say that we are setting again and again the same element. True… but there is an hidden feature of redis-benchmark that allows to randomize arguments:

 $ ./redis-benchmark -q -r 100000 -n 100000 zadd sortedset 10 ele:rand:000000000000
 zadd sortedset 10 ele:rand:000000000000: 104166.67 requests per second 
 $ redis-cli zcard sortedset
 (integer) 63202

The same thread also covers the performance of sorted sets in Redis.

Original title and link: The Little Known Secret of Redis (NoSQL database©myNoSQL)