[m00x]

On modern hardware a cow page copy should only take 1-5ms. Redis forks to save the db to disk and it's been a solid design choice.

I guess it depends on how sensitive your application is to main thread pauses.

[trumpdong]

So like 1000-5000s if you have 4GB of data? Over an hour?

[Joker_vD]

Redis absolutely suffers from long-executing fork() in practice, its developers even griped about it a couple of times on their blog.

[tempest_]

I have found that design choice to be annoying