How to reduce memory consumption in redis cluster 3.0.2?

Question

linux

Good afternoon. Migrating from a simple redis to a redis cluster of 4 masters and 4 slaves.
The test base occupies 170mb in the rdb file.
In single redis 3.0.2 64bit memory consumption is 391MB. Ratio of raw data to memory consumption 2.3
In redis cluster 3.0.2 32bit, the total memory consumption of the masters is 573 MB. The coefficient is 3.4
In redis cluster 3.0.2 64bit, the total memory consumption of the masters is 695 MB. The coefficient is 4.1
Is it possible to optimize memory consumption in redis cluster 3.0.2 64bit?

Answer 1

this is redis, so it is necessary

Answer 2

so in rdb you have gzip compressed data