One thing I have seen done is taking filesystem (ex. ZFS) snapshots every n minutes on a secondary server. You can then restore the secondary and promote it to master.

I find https://github.com/antirez/redis one of the best C codebase to read.

Hey thx for reporting this. It should be gone now.

I will looking into adding it.

if you are using a mac use dscacheutil -flushcache