Redis 2.4: Massive Decrease in Memory Usage
Robert Schultz compares the memory consumption in Redis 2.2 vs Redis 2.4. Results are impressive:
Before throwing more RAM into the box, I decided to try updating to redis 2.4 as I had read a blog post that it was more efficient at storing sorted sets.
I was SHOCKED at the reduction in RAM usage:

I’m wondering if these stats on Redis memory usage and Redis storage overhead should not be reviewed before Redis 2.4 will be out.
Original title and link: Redis 2.4: Massive Decrease in Memory Usage (©myNoSQL)
via: http://cosmicrealms.com/blog/2011/10/03/massive-decrease-in-memory-usage-with-redis-2-dot-4/