alt Hacker NewsI remember seeing another strategy where a remote block device was (lazily?) mirrored to a local SSD. The mirror was configured such that reads from the local device were preferred and writes would go to both devices. I think this was done by someone on GCP.
Does this ring any bells? I’ve searched for this a time or two and can’t find it again.
Replies
cperciva • today at 4:01 AM
I've done this on EC2 -- in particular back in the days when EBS billed per I/O (as opposed to using a "reserved IOPs" model where you say up front how much I/O performance you need). I haven't bothered recently since EBS performance is good enough for most purposes and there's no automatic cost savings.
Discord: https://discord.com/blog/how-discord-supercharges-network-di...
(Somehow the name "SuperDisks" was burned into my brain for this. Although Discord's post does use 'Super-Disks' in a section header, if you search the Internet for SuperDisks you'll everything's about the LS-120 floppies that went by that name.)