It looks like redis is using fork to generate checkpoints of the database. Which is quite a neat hack - use the copy-on-write memory properties of modern unix f

It looks like redis is using fork to generate checkpoints of the database. Which is quite a neat hack - use the copy-on-write memory properties of modern unix fork() implementations to implement persistent checkpoints of database state. It does mean that forking the entire process is pretty much the point of the exercise however.