meskyanichi/backup — pull request #357 by bugant (2012-09-03 16:42:48+00:00)
Title: Use BGSAVE to take a snapshot of a Redis db

The Redis SAVE command should almost never be called in production
environments since it will block all the other clients. Its BGSAVE
variant should be use instead.

See the following links for more details on the two commands:

SAVE http://redis.io/commands/save
BGSAVE http://redis.io/commands/bgsave