Question

I have a redis as big as 4G on one 4G memory machine,I want to split it into two 2G redis instance so that I can run the two on two different machines.

how to do that?

thx

Answer 1

AFAIK there is no easy way to do it.

One way to do it is to use the redis-rdb-tools package from Sripathi Krishnan. The procedure is:

• choose a strategy to shard your data (i.e a function which distributes the keys over the instances)
• write a Python script to parse a Redis dump file, connect to several instances, and apply the commands to insert the data on the correct instances
• dump the Redis instance
• flush the instance
• create and start the second instance
• run the script on the dump of the first instance

See more information at https://github.com/sripathikrishnan/redis-rdb-tools